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- Mollusca (132 791)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (25 009)
- Class Caudofoveata (143)
- Class Cephalopoda (1 834)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 697)
- Subclass Amphigastropoda † (390)
- Subclass Angiogastropoda represented as Gastropoda
- Subclass Apogastropoda
- Subclass Caenogastropoda (53 636)
- Subclass Gastropoda incertae sedis (308)
- Subclass Heterobranchia (39 156)
- Infraclass "Lower Heterobranchia" (1 137)
- Infraclass Euthyneura (37 433)
- Subterclass Acteonimorpha (411)
- Subterclass Ringipleura (2 917)
- Subterclass Tectipleura (34 105)
- Superorder Acochlidiimorpha (48)
- Superorder Ascoglossa accepted as Sacoglossa
- Superorder Basommatophora accepted as Hygrophila
- Superorder Eupulmonata (25 569)
- Order Aillyida accepted as Achatinina
- Order Ellobiida (579)
- Order Gymnomorpha accepted as Systellommatophora
- Order Stylommatophora (24 766)
- Suborder Achatinina (2 900)
- Suborder Elasmognatha accepted as Succineoidei
- Suborder Helicina (21 626)
- Infraorder Arionoidei (140)
- Infraorder Clausilioidei (1 859)
- Superfamily Clausilioidea J. E. Gray, 1855 (1 859)
- Family Clausiliidae J. E. Gray, 1855 (1 762)
- Subfamily Alopiinae A. J. Wagner, 1913 (434)
- Subfamily Clausiliinae J. E. Gray, 1855 (288)
- Tribe Acrotomini H. Nordsieck, 1979 (54)
- Tribe Baleini A. J. Wagner, 1913 (85)
- Tribe Boettgeriini H. Nordsieck, 1979 (21)
- Tribe Clausiliini J. E. Gray, 1855 (68)
- Genus Canalicia O. Boettger, 1863 † (6)
- Genus Clausilia Draparnaud, 1805 (14)
- Subgenus Clausilia (Acroeuxina) O. Boettger, 1877 accepted as Elia (Acroeuxina) O. Boettger, 1877
- Subgenus Clausilia (Acrophaedusa) O. Boettger, 1877 accepted as Oospira W. T. Blanford, 1872
- Subgenus Clausilia (Acrotoma) O. Boettger, 1881 accepted as Acrotoma O. Boettger, 1881
- Subgenus Clausilia (Adriaca) Westerlund, 1884 accepted as Delima (Semirugata) O. Boettger, 1877
- Subgenus Clausilia (Agathylla) H. Adams & A. Adams, 1855 accepted as Agathylla H. Adams & A. Adams, 1855 (1)
- Subgenus Clausilia (Albanica) O. Boettger, 1878 accepted as Delima W. Hartmann, 1842
- Subgenus Clausilia (Albinaria) Vest, 1867 accepted as Albinaria Vest, 1867 (1)
- Subgenus Clausilia (Alinda) H. Adams & A. Adams, 1855 accepted as Alinda H. Adams & A. Adams, 1855
- Subgenus Clausilia (Alopia) H. Adams & A. Adams, 1855 accepted as Alopia H. Adams & A. Adams, 1855
- Subgenus Clausilia (Andraea) L. Pfeiffer, 1848 represented as Clausilia Draparnaud, 1805
- Subgenus Clausilia (Archipelagica) O. Boettger, 1878 accepted as Albinaria Vest, 1867
- Subgenus Clausilia (Armeniaca) accepted as Clausilia (Armenica) O. Boettger, 1877
- Subgenus Clausilia (Armenica) O. Boettger, 1877 accepted as Armenica O. Boettger, 1877
- Subgenus Clausilia (Balea) J. E. Gray, 1824 represented as Balea J. E. Gray, 1824
- Subgenus Clausilia (Bathyclista) O. Boettger, 1885 accepted as Isabellaria Vest, 1867
- Subgenus Clausilia (Bigibbosa) O. Boettger, 1878 accepted as Albinaria Vest, 1867
- Subgenus Clausilia (Binodata) O. Boettger, 1877 accepted as Delima W. Hartmann, 1842
- Subgenus Clausilia (Bosnica) Westerlund, 1884 accepted as Herilla H. Adams & A. Adams, 1855
- Subgenus Clausilia (Canalicia) O. Boettger, 1863 † accepted as Canalicia O. Boettger, 1863 †
- Subgenus Clausilia (Carinigera) Möllendorff, 1873 accepted as Carinigera Möllendorff, 1873
- Subgenus Clausilia (Caucasica) O. Boettger, 1877 accepted as Elia (Caucasica) O. Boettger, 1877
- Subgenus Clausilia (Cerigana) O. Boettger, 1878 accepted as Albinaria (Cerigana) O. Boettger, 1878
- Subgenus Clausilia (Charpentieria) Stabile, 1864 accepted as Charpentieria Stabile, 1864
- Subgenus Clausilia (Clausilia) Draparnaud, 1805 represented as Clausilia Draparnaud, 1805
- Subgenus Clausilia (Clausiliastra) L. Pfeiffer, 1856 accepted as Cochlodina A. Férussac, 1821
- Subgenus Clausilia (Cochlodina) A. Férussac, 1821 accepted as Cochlodina A. Férussac, 1821
- Subgenus Clausilia (Constricta) O. Boettger, 1877 † accepted as Constricta O. Boettger, 1877 †
- Subgenus Clausilia (Corrugata) O. Boettger, 1878 accepted as Albinaria (Mirabellina) O. Boettger, 1878
- Subgenus Clausilia (Cossmannia) Babor, 1897 † accepted as Baboria Cossmann, 1898 †
- Subgenus Clausilia (Cretica) O. Boettger, 1878 accepted as Albinaria (Cretica) O. Boettger, 1878
- Subgenus Clausilia (Cristaria) Westerlund, 1884 accepted as Cristataria Vest, 1867
- Subgenus Clausilia (Cristataria) Vest, 1867 accepted as Cristataria Vest, 1867
- Subgenus Clausilia (Cusmicia) accepted as Alinda H. Adams & A. Adams, 1855
- Subgenus Clausilia (Cylindrophaedusa) O. Boettger, 1877 accepted as Cylindrophaedusa O. Boettger, 1877
- Subgenus Clausilia (Dalmatica) O. Boettger, 1877 accepted as Delima (Delima) W. Hartmann, 1842
- Subgenus Clausilia (Delima) W. Hartmann, 1842 accepted as Delima W. Hartmann, 1842
- Subgenus Clausilia (Diadoma) Westerlund, 1901 accepted as Albinaria (Diadoma) Westerlund, 1901
- Subgenus Clausilia (Diceratoptyx) Pilsbry, 1905 accepted as Zaptyx Pilsbry, 1900
- Subgenus Clausilia (Dilataria) Vest, 1867 accepted as Dilataria Vest, 1867
- Subgenus Clausilia (Disjunctaria) O. Boettger, 1877 † accepted as Disjunctaria O. Boettger, 1877 †
- Subgenus Clausilia (Egana) O. Boettger, 1878 accepted as Albinaria (Egana) O. Boettger, 1878
- Subgenus Clausilia (Elia) H. Adams & A. Adams, 1855 accepted as Elia H. Adams & A. Adams, 1855
- Subgenus Clausilia (Emarginaria) O. Boettger, 1877 † accepted as Emarginaria O. Boettger, 1877 †
- Subgenus Clausilia (Eruca) Swainson, 1840 accepted as Lauria J. E. Gray, 1840
- Subgenus Clausilia (Eualopia) O. Boettger, 1877 † accepted as Eualopia O. Boettger, 1877 †
- Subgenus Clausilia (Eualopia) Westerlund, 1884 accepted as Alopia H. Adams & A. Adams, 1855
- Subgenus Clausilia (Euclausta) Oppenheim, 1890 † accepted as Disjunctaria (Euclausta) Oppenheim, 1890 †
- Subgenus Clausilia (Euclista) O. Boettger, 1878 accepted as Isabellaria Vest, 1867
- Subgenus Clausilia (Euphaedusa) O. Boettger, 1877 accepted as Euphaedusa O. Boettger, 1877
- Subgenus Clausilia (Eutriloba) Westerlund, 1884 accepted as Triloba Vest, 1867
- Subgenus Clausilia (Eutriptychia) O. Boettger, 1877 † accepted as Triptychia F. Sandberger, 1875 †
- Subgenus Clausilia (Euxina) O. Boettger, 1877 accepted as Euxina O. Boettger, 1877
- Subgenus Clausilia (Euxinastra) O. Boettger, 1888 accepted as Euxinastra O. Boettger, 1888
- Subgenus Clausilia (Filumna) O. Boettger, 1878 accepted as Cristataria Vest, 1867
- Subgenus Clausilia (Florienia) Pallary, 1939 accepted as Cristataria Vest, 1867
- Subgenus Clausilia (Formosana) O. Boettger, 1877 accepted as Formosana O. Boettger, 1877
- Subgenus Clausilia (Fusulus) Fitzinger, 1833 accepted as Fusulus Fitzinger, 1833
- Subgenus Clausilia (Galeata) O. Boettger, 1877 accepted as Galeata O. Boettger, 1877
- Subgenus Clausilia (Garnieria) Bourguignat, 1877 accepted as Garnieria Bourguignat, 1877
- Subgenus Clausilia (Gibbula) O. Boettger, 1877 accepted as Charpentieria (Gibbularia) Cecconi, 1908
- Subgenus Clausilia (Graja) O. Boettger, 1878 accepted as Albinaria (Graja) O. Boettger, 1878
- Subgenus Clausilia (Hemiphaedusa) O. Boettger, 1877 accepted as Hemiphaedusa O. Boettger, 1877
- Subgenus Clausilia (Hemizaptyx) Pilsbry, 1905 accepted as Zaptyx (Hemizaptyx) Pilsbry, 1905
- Subgenus Clausilia (Herilla) H. Adams & A. Adams, 1855 accepted as Herilla H. Adams & A. Adams, 1855
- Subgenus Clausilia (Hetaera) O. Boettger, 1877 accepted as Euxina O. Boettger, 1877
- Subgenus Clausilia (Heteroptycha) Westerlund, 1884 accepted as Montenegrina O. Boettger, 1877
- Subgenus Clausilia (Heterozaptyx) Pilsbry, 1906 accepted as Heterozaptyx Pilsbry, 1906
- Subgenus Clausilia (Hollabrunnella) H. Nordsieck, 2007 † accepted as Hollabrunnella H. Nordsieck, 2007 †
- Subgenus Clausilia (Idiozaptyx) Pilsbry, 1909 accepted as Zaptyx Pilsbry, 1900
- Subgenus Clausilia (Idyla) H. Adams & A. Adams, 1855 accepted as Idyla H. Adams & A. Adams, 1855
- Subgenus Clausilia (Imitatrix) Westerlund, 1884 accepted as Lampedusa (Imitatrix) Westerlund, 1884
- Subgenus Clausilia (Index) O. Boettger, 1877 accepted as Mucronaria (Index) O. Boettger, 1877
- Subgenus Clausilia (Interstriata) O. Boettger, 1878 accepted as Albinaria (Interstriata) O. Boettger, 1878
- Subgenus Clausilia (Iphigenia) J. E. Gray, 1840 accepted as Iphigenia J. E. Gray, 1840
- Subgenus Clausilia (Isabellaria) Vest, 1867 accepted as Isabellaria Vest, 1867
- Subgenus Clausilia (Itala) O. Boettger, 1877 accepted as Itala O. Boettger, 1877
- Subgenus Clausilia (Ithyption) Dean, 1918 accepted as Alopia H. Adams & A. Adams, 1855
- Subgenus Clausilia (Kuzmicia) Brusina, 1870 accepted as Alinda H. Adams & A. Adams, 1855
- Subgenus Clausilia (Laciniaria) Hartmann, 1842 accepted as Laciniaria W. Hartmann, 1842
- Subgenus Clausilia (Laconica) O. Boettger, 1878 accepted as Albinaria (Laconica) O. Boettger, 1878
- Subgenus Clausilia (Laevissima) O. Boettger, 1877 accepted as Laevissima O. Boettger, 1877
- Subgenus Clausilia (Laminifera) O. Boettger, 1863 accepted as Laminifera O. Boettger, 1863 †
- Subgenus Clausilia (Lampedusa) O. Boettger, 1877 accepted as Lampedusa O. Boettger, 1877
- Subgenus Clausilia (Lombardiella) H. Nordsieck, 2013 represented as Clausilia Draparnaud, 1805
- Subgenus Clausilia (Lopadusaria) Monterosato, 1892 accepted as Lampedusa O. Boettger, 1877
- Subgenus Clausilia (Luchuphaedusa) Pilsbry, 1901 accepted as Stereophaedusa (Luchuphaedusa) Pilsbry, 1901
- Subgenus Clausilia (Macedonica) O. Boettger, 1877 accepted as Macedonica O. Boettger, 1877
- Subgenus Clausilia (Macrodontes) Swainson, 1840 accepted as Macrodontes Swainson, 1840
- Subgenus Clausilia (Macrophaedusa) Möllendorff, 1883 accepted as Macrophaedusa Möllendorff, 1883
- Subgenus Clausilia (Macroptychia) O. Boettger, 1877 accepted as Macroptychia O. Boettger, 1877
- Subgenus Clausilia (Marpessa) J. E. Gray, 1821 accepted as Marpessa J. E. Gray, 1821
- Species Clausilia (Marpessa) commutata Rossmässler, 1836 accepted as Cochlodina costata ungulata (Rossmässler, 1835)
- Species Clausilia (Marpessa) costata C. Pfeiffer, 1828 accepted as Cochlodina costata (C. Pfeiffer, 1828)
- Variety Clausilia (Marpessa) costata var. psila Westerlund, 1884 accepted as Cochlodina costata psila (Westerlund, 1884)
- Species Clausilia (Marpessa) prolaminata Sacco, 1889 † accepted as Cochlodina (Procochlodina) prolaminata (Sacco, 1889) †
- Species Clausilia (Marpessa) raddei Mousson, 1876 accepted as Elia somchetica (L. Pfeiffer, 1846)
- Subgenus Clausilia (Mauritanica) O. Boettger, 1879 accepted as Mauritanica O. Boettger, 1879
- Subgenus Clausilia (Medora) H. Adams & A. Adams, 1855 accepted as Medora H. Adams & A. Adams, 1855
- Subgenus Clausilia (Megaleuxina) O. Boettger, 1877 accepted as Elia (Megaleuxina) O. Boettger, 1877
- Subgenus Clausilia (Megalophaedusa) O. Boettger, 1877 accepted as Megalophaedusa O. Boettger, 1877
- Subgenus Clausilia (Mentissa) H. Adams & A. Adams, 1855 accepted as Mentissa H. Adams & A. Adams, 1855
- Subgenus Clausilia (Mentissoidea) O. Boettger, 1877 accepted as Mentissoidea O. Boettger, 1877
- Subgenus Clausilia (Metazaptyx) Pilsbry, 1905 accepted as Zaptyx (Zaptyx) Pilsbry, 1900
- Subgenus Clausilia (Micropontica) O. Boettger, 1881 accepted as Micropontica O. Boettger, 1881
- Subgenus Clausilia (Mira) O. Boettger, 1877 accepted as Dobatia H. Nordsieck, 1973
- Subgenus Clausilia (Mirabellina) O. Boettger, 1878 accepted as Albinaria (Mirabellina) O. Boettger, 1878
- Subgenus Clausilia (Montenegrina) O. Boettger, 1877 accepted as Montenegrina O. Boettger, 1877
- Subgenus Clausilia (Mucronaria) O. Boettger, 1877 accepted as Mucronaria O. Boettger, 1877
- Subgenus Clausilia (Munda) O. Boettger, 1878 accepted as Albinaria (Cathariella) Lindholm, 1925
- Subgenus Clausilia (Naevosa) O. Boettger, 1878 accepted as Albinaria (Graja) O. Boettger, 1878
- Subgenus Clausilia (Nenia) H. Adams & A. Adams, 1855 accepted as Nenia H. Adams & A. Adams, 1855
- Subgenus Clausilia (Neostyriaca) A. J. Wagner, 1920 accepted as Neostyriaca A. J. Wagner, 1920
- Subgenus Clausilia (Nesiophaedusa) Pilsbry, 1905 accepted as Stereophaedusa (Luchuphaedusa) Pilsbry, 1901
- Subgenus Clausilia (Oligoptychia) O. Boettger, 1877 accepted as Idyla H. Adams & A. Adams, 1855
- Subgenus Clausilia (Oligozaptyx) Pilsbry, 1905 accepted as Zaptyx (Stereozaptyx) Pilsbry, 1905
- Subgenus Clausilia (Olympia) Vest, 1867 accepted as Olympicola P. Hesse, 1916
- Subgenus Clausilia (Oophaedusa) Pilsbry, 1905 accepted as Stereophaedusa (Oophaedusa) Pilsbry, 1905
- Subgenus Clausilia (Oospira) W. T. Blanford, 1872 accepted as Oospira W. T. Blanford, 1872
- Subgenus Clausilia (Paestana) Westerlund, 1884 accepted as Charpentieria (Stigmatica) O. Boettger, 1877
- Subgenus Clausilia (Papillifera) W. Hartmann, 1842 accepted as Papillifera W. Hartmann, 1842
- Subgenus Clausilia (Papillina) Moquin-Tandon, 1856 accepted as Papillifera W. Hartmann, 1842
- Subgenus Clausilia (Paraphaedusa) O. Boettger, 1899 accepted as Paraphaedusa O. Boettger, 1899
- Subgenus Clausilia (Parazaptyx) Pilsbry, 1905 accepted as Zaptyx (Parazaptyx) Pilsbry, 1905
- Subgenus Clausilia (Peneptychia) Westerlund, 1884 accepted as Euxina O. Boettger, 1877
- Subgenus Clausilia (Phaedusa) H. Adams & A. Adams, 1855 accepted as Phaedusa H. Adams & A. Adams, 1855
- Subgenus Clausilia (Piceata) O. Boettger, 1877 accepted as Charpentieria (Stigmatica) O. Boettger, 1877
- Subgenus Clausilia (Pirostoma) Möllendorff, 1873 accepted as Macrogastra (Pyrostoma) Vest, 1867
- Subgenus Clausilia (Pliodiptychia) H. Nordsieck, 1978 † accepted as Pliodiptychia H. Nordsieck, 1978 †
- Subgenus Clausilia (Plioptychia) O. Boettger, 1877 † accepted as Triptychia F. Sandberger, 1875 †
- Subgenus Clausilia (Polloneria) Sacco, 1886 † accepted as Polloneria Sacco, 1886 †
- Subgenus Clausilia (Polyptychia) O. Boettger, 1877 accepted as Mucronaria O. Boettger, 1877
- Subgenus Clausilia (Proalbinaria) O. Boettger, 1895 † accepted as Proalbinaria O. Boettger, 1895 †
- Subgenus Clausilia (Profuga) O. Boettger, 1878 accepted as Albinaria (Graeca) O. Boettger, 1877
- Subgenus Clausilia (Pseudalinda) O. Boettger, 1877 accepted as Alinda (Pseudalinda) O. Boettger, 1877
- Subgenus Clausilia (Pseudidyla) O. Boettger, 1877 † accepted as Pseudidyla O. Boettger, 1877 †
- Subgenus Clausilia (Pseudonenia) O. Boettger, 1877 accepted as Pseudonenia O. Boettger, 1877
- Subgenus Clausilia (Pupa) Draparnaud, 1801 accepted as Pupilla J. Fleming, 1828
- Subgenus Clausilia (Pupella) Swainson, 1840 accepted as Granaria Held, 1838
- Subgenus Clausilia (Pyrostoma) Vest, 1867 accepted as Macrogastra W. Hartmann, 1841
- Subgenus Clausilia (Quadriplicata) O. Boettger, 1878 accepted as Quadriplicata O. Boettger, 1878
- Subgenus Clausilia (Reinia) Kobelt, 1876 accepted as Reinia Kobelt, 1876
- Subgenus Clausilia (Rhipsauchenia) O. Boettger, 1890 accepted as Cristataria Vest, 1867
- Subgenus Clausilia (Robusta) O. Boettger, 1877 accepted as Delima (Semirugata) O. Boettger, 1877
- Subgenus Clausilia (Scopulosa) O. Boettger, 1878 accepted as Albinaria (Laconica) O. Boettger, 1878
- Subgenus Clausilia (Selenoptyx) Pilsbry, 1908 accepted as Zaptyx (Selenoptyx) Pilsbry, 1908
- Subgenus Clausilia (Semirugata) O. Boettger, 1877 accepted as Delima (Semirugata) O. Boettger, 1877
- Subgenus Clausilia (Sericata) O. Boettger, 1878 accepted as Isabellaria Vest, 1867
- Subgenus Clausilia (Serrulina) Mousson, 1873 accepted as Serrulina Mousson, 1873
- Subgenus Clausilia (Siciliaria) Vest, 1867 accepted as Siciliaria Vest, 1867
- Subgenus Clausilia (Spoliata) Frankenberger, 1913 accepted as Alinda (Pseudalinda) O. Boettger, 1877
- Subgenus Clausilia (Stereophaedusa) O. Boettger, 1877 accepted as Stereophaedusa O. Boettger, 1877
- Subgenus Clausilia (Stereozaptyx) Pilsbry, 1905 accepted as Zaptyx (Stereozaptyx) Pilsbry, 1905
- Subgenus Clausilia (Stigmatica) O. Boettger, 1877 accepted as Stigmatica O. Boettger, 1877
- Subgenus Clausilia (Strangulata) Westerlund, 1884 accepted as Cristataria Vest, 1867
- Subgenus Clausilia (Striata) O. Boettger, 1878 accepted as Albinaria (Egana) O. Boettger, 1878
- Subgenus Clausilia (Strigillaria) Vest, 1867 accepted as Strigillaria Vest, 1867
- Subgenus Clausilia (Strobeliella) H. Nordsieck, 1977 represented as Clausilia Draparnaud, 1805
- Subgenus Clausilia (Strobilus) Anton, 1838 accepted as Strobilus Anton, 1838
- Subgenus Clausilia (Strumosa) O. Boettger, 1877 accepted as Strumosa O. Boettger, 1877
- Subgenus Clausilia (Teres) O. Boettger, 1878 accepted as Albinaria (Mirabellina) O. Boettger, 1878
- Subgenus Clausilia (Thalestris) Lindholm, 1913 accepted as Roseniella Thiele, 1931
- Subgenus Clausilia (Thaumatoptyx) Pilsbry, 1908 accepted as Zaptyx (Thaumatoptyx) Pilsbry, 1908
- Subgenus Clausilia (Tirolica) O. Boettger, 1877 accepted as Charpentieria Stabile, 1864
- Subgenus Clausilia (Triloba) Vest, 1867 accepted as Triloba Vest, 1867
- Subgenus Clausilia (Triptychia) F. Sandberger, 1875 † accepted as Triptychia F. Sandberger, 1875 †
- Subgenus Clausilia (Tyrannophaedusa) Pilsbry, 1900 accepted as Megalophaedusa (Tyrannophaedusa) Pilsbry, 1900
- Subgenus Clausilia (Uncinaria) Vest, 1867 accepted as Vestia P. Hesse, 1916
- Subgenus Clausilia (Wagneria) Hesse, 1912 accepted as Euxina O. Boettger, 1877
- Subgenus Clausilia (Westerlundella) Lindholm, 1924 accepted as Cristataria Vest, 1867
- Subgenus Clausilia (Zaptyx) Pilsbry, 1900 accepted as Zaptyx Pilsbry, 1900
- Species Clausilia abietina Dupuy, 1849 accepted as Clausilia bidentata abietina Dupuy, 1849
- Species Clausilia aborensis Godwin-Austen, 1918 accepted as Cylindrophaedusa (Montiphaedusa) annandalei aborensis (Godwin-Austen, 1918)
- Species Clausilia abrupta Küster, 1847 accepted as Agathylla abrupta (Küster, 1847)
- Species Clausilia abyssoclista O. Boettger, 1883 accepted as Isabellaria abyssoclista (O. Boettger, 1883)
- Species Clausilia acanthula Heude, 1885 accepted as Euphaedusa (Euphaedusa) loczyi acanthula (Heude, 1885)
- Species Clausilia acicula Cantraine, 1835
- Species Clausilia aciculata Bavay & Dautzenberg, 1909 accepted as Oospira aciculata (Bavay & Dautzenberg, 1909)
- Species Clausilia acridula Rossmässler, 1836 accepted as Mentissa canalifera (Rossmässler, 1836)
- Species Clausilia acrolepta E. von Martens, 1876 accepted as Mucronaria acuminata (Mousson, 1876)
- Species Clausilia acrostoma Bavay & Dautzenberg, 1909 accepted as Hemiphaedusa (Hemiphaedusa) acrostoma (Bavay & Dautzenberg, 1909)
- Species Clausilia aculus W. H. Benson, 1842 accepted as Euphaedusa aculus (W. H. Benson, 1842)
- Species Clausilia adamsiana L. Pfeiffer, 1861 accepted as Columbinia adamsiana (L. Pfeiffer, 1861)
- Species Clausilia adaucta Gredler, 1889 accepted as Euphaedusa gredleri H. Nordsieck, 1998
- Species Clausilia adaucta Porro, 1841
- Species Clausilia adelina Küster, 1847 accepted as Siciliaria calcarae (R. A. Philippi, 1844)
- Species Clausilia adjacensis Shuttleworth, 1843 accepted as Cochlodina meisneriana adjaciensis (Shuttleworth, 1843)
- Species Clausilia adposita Strobel, 1854
- Species Clausilia adspirationis L. Pfeiffer, 1868 accepted as Medora lesinensis lesinensis (Küster, 1847)
- Species Clausilia aenea Pilsbry, 1903 accepted as Pliciphaedusa aenea (Pilsbry, 1903)
- Species Clausilia aenigmatica Sykes, 1893
- Species Clausilia aethiops Möllendorff, 1882 accepted as Stereophaedusa aethiops (Möllendorff, 1882)
- Species Clausilia affinis R. A. Philippi, 1836 accepted as Papillifera papillaris affinis (R. A. Philippi, 1836)
- Species Clausilia agesilaos O. Boettger, 1878 accepted as Clausilia agesilaus E. von Martens, 1873
- Species Clausilia agesilaus E. von Martens, 1873 accepted as Albinaria voithii agesilaus (E. von Martens, 1873)
- Species Clausilia aggesta O. Boettger, 1878 accepted as Quadriplicata aggesta (O. Boettger, 1878)
- Species Clausilia agna Pilsbry, 1902 accepted as Zaptyx (Hemizaptyx) pinto agna (Pilsbry, 1902)
- Species Clausilia agnata L. Pfeiffer, 1842 accepted as Medora agnata agnata (L. Pfeiffer, 1842)
- Species Clausilia agnella Charpentier, 1852 accepted as Delima bilabiata biasolettiana (Charpentier, 1852)
- Species Clausilia agrigentina Westerlund, 1890 accepted as Papillifera papillaris tinei (Westerlund, 1878)
- Species Clausilia albersi Bourguignat, 1852 accepted as Cristataria albersi (Bourguignat, 1852)
- Species Clausilia albescens Rossmässler, 1836 accepted as Medora agnata (L. Pfeiffer, 1842)
- Species Clausilia albescens Menke, 1830 accepted as Medora macascarensis albescens (Menke, 1830)
- Species Clausilia albicosta O. Boettger, 1877 accepted as Carinigera albicosta (O. Boettger, 1877)
- Species Clausilia albida L. Pfeiffer, 1846 accepted as Delima semirugata (Rossmässler, 1836)
- Species Clausilia albocincta L. Pfeiffer, 1841 accepted as Delima albocincta (L. Pfeiffer, 1841)
- Species Clausilia alboguttata J. A. Wagner, 1829 accepted as Charpentieria itala (G. von Martens, 1824)
- Species Clausilia alboguttulata Küster, 1850 accepted as Charpentieria ornata (Rossmässler, 1836)
- Species Clausilia albolabris L. Pfeiffer, 1848 accepted as Delima bilabiata crassilabris (Rossmässler, 1836)
- Species Clausilia almissana Küster, 1847 accepted as Medora almissana (Küster, 1847)
- Species Clausilia altecostata L. Pfeiffer, 1866 accepted as Albinaria caerulea altecostata (L. Pfeiffer, 1866)
- Species Clausilia alternata Möllendorff, 1896 accepted as Paraphaedusa alternata (Möllendorff, 1896)
- Species Clausilia alticola E. von Martens, 1891 accepted as Oospira alticola (E. von Martens, 1892)
- Species Clausilia amiatae E. von Martens, 1873 accepted as Clausilia cruciata amiatae E. von Martens, 1873
- Species Clausilia amoena L. Pfeiffer, 1848 accepted as Delima amoena (L. Pfeiffer, 1848)
- Species Clausilia amorgia O. Boettger, 1878 accepted as Albinaria caerulea amorgia (O. Boettger, 1878)
- Species Clausilia amphiodon Reuss, 1861 † accepted as Serrulastra amphiodon (Reuss, 1861) †
- Species Clausilia anatolica J. R. Roth, 1839 accepted as Albinaria anatolica (J. R. Roth, 1839)
- Species Clausilia andecola Morelet, 1863 accepted as Incaglaia andecola (Morelet, 1863)
- Species Clausilia andusiensis Coutagne, 1886 accepted as Clausilia rugosa andusiensis Coutagne, 1886
- Species Clausilia angistoma Küster, 1876 accepted as Delima latilabris (J. A. Wagner, 1829)
- Species Clausilia angistoma Rossmässler, 1835 accepted as Agathylla exarata (Rossmässler, 1835)
- Species Clausilia angrandi Morelet, 1863 accepted as Incaglaia angrandi (Morelet, 1863)
- Species Clausilia anguina L. Pfeiffer, 1866 accepted as Charpentieria stigmatica sturmii (L. Pfeiffer, 1848)
- Species Clausilia angulata A. Schmidt, 1868 accepted as Boettgeria lowei (Albers, 1852)
- Species Clausilia angustata E. A. Bielz, 1859 accepted as Alopia bogatensis angustata (E. A. Bielz, 1859)
- Species Clausilia angustella L. Pfeiffer, 1866 accepted as Agathylla goldi (Walderdorff, 1864)
- Species Clausilia angusticollis Küster, 1876 accepted as Delima latilabris angusticollis (Küster, 1876)
- Species Clausilia annandalei Preston, 1915 accepted as Cylindrophaedusa (Montiphaedusa) annandalei (Preston, 1915)
- Species Clausilia antilopina Heude, 1885 accepted as Formosana antilopina (Heude, 1885)
- Species Clausilia antiochica Kobelt, 1892 accepted as Cristataria colbeauiana (L. Pfeiffer, 1861)
- Species Clausilia antiperversa (A. Férussac, 1832) accepted as Brachypodella collaris (A. Férussac, 1832)
- Species Clausilia antiqua Zieten, 1832 † accepted as Triptychia antiqua (Zieten, 1832) †
- Species Clausilia antiqua (Matheron, 1832) † accepted as Proalbinaria subantiqua (A. d'Orbigny, 1850) †
- Species Clausilia antiquior K. Miller, 1907 † accepted as Triptychia antiquior (K. Miller, 1907) †
- Species Clausilia aperta Küster, 1861 accepted as Isabellaria saxicola aperta (Küster, 1861)
- Species Clausilia apfelbecki Sturany, 1907 accepted as Montenegrina apfelbecki (Sturany, 1907)
- Species Clausilia aphrodite O. Boettger, 1883 accepted as Albinaria hippolyti aphrodite (O. Boettger, 1883)
- Species Clausilia aplostoma Heude, 1885 accepted as Bathyptychia (Bathyptychia) aplostoma (Heude, 1885)
- Species Clausilia approximans A. Schmidt, 1856 accepted as Fusulus approximans (A. Schmidt, 1856)
- Species Clausilia aprivora Heude, 1887 accepted as Synprosphyma (Synprosphyma) franciscana (Möllendorff, 1885)
- Species Clausilia aptychia Möllendorff, 1882 accepted as Zaptyx buschii (Küster, 1844)
- Species Clausilia aquila L. Pfeiffer, 1846 accepted as Medora dalmatina aquila (L. Pfeiffer, 1846)
- Species Clausilia arakana Stoliczka, 1872 accepted as Oospira arakana (Stoliczka, 1872)
- Species Clausilia aratorum Pilsbry, 1903 accepted as Megalophaedusa aratorum (Pilsbry, 1903)
- Species Clausilia arcadica L. Pfeiffer, 1868 accepted as Albinaria arcadica (L. Pfeiffer, 1868)
- Species Clausilia ardouiniana Heude, 1885 accepted as Grandinenia ardouiniana (Heude, 1885)
- Species Clausilia armata Küster, 1844 accepted as Medora armata (Küster, 1844)
- Species Clausilia articulata F. Sandberger, 1862 † accepted as Canalicia articulata (F. Sandberger, 1862) †
- Species Clausilia artifina Heude, 1885 accepted as Formosana artifina (Heude, 1885)
- Species Clausilia asperata Pilsbry, 1905 accepted as Zaptyx asperata (Pilsbry, 1905)
- Species Clausilia astropalia O. Boettger, 1883 accepted as Albinaria brevicollis astropalia (O. Boettger, 1883)
- Species Clausilia attenuata Rossmässler, 1835 accepted as Macrogastra attenuata (Rossmässler, 1835)
- Species Clausilia attrita O. Boettger, 1877 accepted as Megalophaedusa attrita (O. Boettger, 1877)
- Species Clausilia aulacophora Pilsbry, 1900 accepted as Megalophaedusa aulacophora (Pilsbry, 1900)
- Species Clausilia aurantiaca O. Boettger, 1877 accepted as Megalophaedusa aurantiaca (O. Boettger, 1877)
- Species Clausilia auregani Bavay & Dautzenberg, 1904 accepted as Liparophaedusa auregani (Bavay & Dautzenberg, 1904)
- Species Clausilia auricoma Bavay & Dautzenberg, 1899 accepted as Hemiphaedusa auricoma (Bavay & Dautzenberg, 1899)
- Species Clausilia auriformis Mousson, 1859 accepted as Macedonica marginata (Rossmässler, 1835)
- Species Clausilia avia Charpentier, 1852 accepted as Albinaria avia (Charpentier, 1852)
- Species Clausilia awajiensis Pilsbry, 1900 accepted as Megalophaedusa awajiensis (Pilsbry, 1900)
- Species Clausilia azumai Pilsbry, 1905 accepted as Stereophaedusa azumai (Pilsbry, 1905)
- Species Clausilia babeensis Bavay & Dautzenberg, 1899 accepted as Synprosphyma babeensis (Bavay & Dautzenberg, 1899)
- Species Clausilia bacillum Hanley & Theobald, 1870 accepted as Cylindrophaedusa bacillum (Hanley & Theobald, 1870)
- Species Clausilia backanensis Bavay & Dautzenberg, 1899 accepted as Phaedusa lypra (Mabille, 1887)
- Species Clausilia bajula A. Schmidt, 1868 accepted as Laciniaria bajula (A. Schmidt, 1868)
- Species Clausilia baldensis Charpentier, 1852 accepted as Charpentieria itala baldensis (Charpentier, 1852)
- Species Clausilia balsamo Strobel, 1850
- Species Clausilia balsamoi Strobel, 1850 accepted as Charpentieria itala balsamoi (Strobel, 1850)
- Species Clausilia banatica Küster, 1860 accepted as Bulgarica rugicollis rugicollis (Rossmässler, 1836)
- Species Clausilia bargesi Bourguignat, 1868 accepted as Cristataria delesserti (Bourguignat, 1853)
- Species Clausilia basileensis Rossmässler, 1835 accepted as Macrogastra attenuata lineolata (Held, 1836)
- Species Clausilia bathyclista O. Boettger, 1879 accepted as Isabellaria bathyclista (O. Boettger, 1879)
- Species Clausilia baudii Pini, 1885
- Species Clausilia baudoni Michaud, 1862 †
- Species Clausilia bavayana Hagenmüller, 1884 accepted as Cochlodina bavayana (Hagenmüller, 1884)
- Species Clausilia bavayi Lindholm, 1924 accepted as Tropidauchenia bavayi (Lindholm, 1924)
- Species Clausilia baziniana Heude, 1890 accepted as Oospira baziniana (Heude, 1890)
- Species Clausilia beaumonti Haime, 1855 †
- Species Clausilia belcheri L. Pfeiffer, 1850 accepted as Euphaedusa belcheri (L. Pfeiffer, 1850)
- Species Clausilia belemnites O. Boettger & Schmacker, 1894 accepted as Euphaedusa (Euphaedusa) belemnites (O. Boettger & Schmacker, 1894)
- Species Clausilia bellotti Strobel, 1854
- Species Clausilia belluccii Issel, 1880 accepted as Mauritanica tristrami tristrami (L. Pfeiffer, 1860)
- Species Clausilia belone O. Boettger, 1879 accepted as Galeata schwerzenbachii (L. Pfeiffer, 1848)
- Species Clausilia bengalensis L. Pfeiffer, 1842
- Species Clausilia bengasiana Gambetta, 1925 accepted as Barcania bengasiana (Gambetta, 1925)
- Species Clausilia bergeri Rossmässler, 1836 accepted as Macrogastra bergeri (Rossmässler, 1836)
- Species Clausilia bernardii L. Pfeiffer, 1861 accepted as Stereophaedusa bernardii (L. Pfeiffer, 1861)
- Species Clausilia berthaudi Michaud, 1877 † accepted as Macrogastra loryi (Michaud, 1862) †
- Species Clausilia berthei Nicolas, 1894 † accepted as Clausilia patula (Matheron, 1832) †
- Species Clausilia biasolettiana Charpentier, 1852 accepted as Delima bilabiata biasolettiana (Charpentier, 1852)
- Species Clausilia bicarinata Rossmässler, 1839 accepted as Sprattia bicarinata (Rossmässler, 1839)
- Species Clausilia bicolor Charpentier, 1852 accepted as Charpentieria stigmatica stigmatica (Rossmässler, 1836)
- Species Clausilia bicolor L. Pfeiffer, 1846
- Species Clausilia bicristata Rossmässler, 1839 accepted as Idyla bicristata (Rossmässler, 1839)
- Species Clausilia bidens (Linnaeus, 1758) accepted as Cochlodina bidens (Linnaeus, 1758)
- Species Clausilia bidentata (Strøm, 1765)
- Species Clausilia bielzii L. Pfeiffer, 1849 accepted as Alopia bielzii (L. Pfeiffer, 1849)
- Species Clausilia bifrons A. Schmidt, 1868 accepted as Alopia regalis glabriuscula (Rossmässler, 1858)
- Species Clausilia bigibbosa Charpentier, 1847 accepted as Albinaria forbesiana bigibbosa (Charpentier, 1847)
- Species Clausilia bilabiata Rossmässler, 1839 accepted as Macedonica marginata (Rossmässler, 1835)
- Species Clausilia bilabiata J. A. Wagner, 1829 accepted as Delima bilabiata (J. A. Wagner, 1829)
- Species Clausilia bilabrata E. A. Smith, 1876 accepted as Megalophaedusa bilabrata (E. A. Smith, 1876)
- Species Clausilia billeti H. Fischer, 1898 accepted as Selenophaedusa billeti (H. Fischer, 1898)
- Species Clausilia binaria Heude, 1887 accepted as Oospira (Oospira) binaria (Heude, 1887)
- Species Clausilia binotata Rossmässler, 1836 accepted as Delima binotata (Rossmässler, 1836)
- Species Clausilia biplicata (Montagu, 1803) accepted as Alinda (Alinda) biplicata (Montagu, 1803)
- Species Clausilia bipustulata A. Schmidt, 1868 accepted as Delima binotata binotata (Rossmässler, 1836)
- Species Clausilia birugata Charpentier, 1852 accepted as Cristataria tubaparadisi (Ehrenberg, 1831)
- Species Clausilia bisdelineata Heude, 1885 accepted as Sinigena bisdelineata (Heude, 1885)
- Species Clausilia bitorquata Rossmässler, 1857 accepted as Bitorquata bitorquata (Rossmässler, 1857)
- Species Clausilia blanci E. von Martens, 1876 accepted as Isabellaria thermopylarum blanci (E. von Martens, 1876)
- Species Clausilia blanda Rossmässler, 1836 accepted as Delima blanda (Rossmässler, 1836)
- Species Clausilia blandiana L. Pfeiffer, 1856 accepted as Columbinia blandiana (L. Pfeiffer, 1856)
- Species Clausilia boeotica Küster, 1861 accepted as Isabellaria clandestina clandestina (Rossmässler, 1857)
- Species Clausilia boettgeriana Paulucci, 1878 accepted as Dilataria boettgeriana (Paulucci, 1878)
- Species Clausilia bogatensis E. A. Bielz, 1856 accepted as Alopia bogatensis (E. A. Bielz, 1856)
- Species Clausilia boissieri Charpentier, 1847 accepted as Cristataria tubaparadisi (Ehrenberg, 1831)
- Species Clausilia bonelli E. von Martens, 1873 accepted as Clausilia cruciata bonellii E. von Martens, 1873
- Species Clausilia bonneti A. Letourneux, 1887 accepted as Mauritanica tristrami tristrami (L. Pfeiffer, 1860)
- Species Clausilia bonthainensis P. Sarasin & F. Sarasin, 1899 accepted as Paraphaedusa bonthainensis (P. Sarasin & F. Sarasin, 1899)
- Species Clausilia borisi P. Hesse, 1912 accepted as Euxina promta (A. Schmidt, 1868)
- Species Clausilia borneensis L. Pfeiffer, 1855 accepted as Phaedusa borneensis (L. Pfeiffer, 1855)
- Species Clausilia bosnensis Zelebor, 1868 accepted as Herilla bosniensis (Vest, 1867)
- Species Clausilia bosnica Brancsik, 1897 accepted as Dilataria bosnica bosnica (Brancsik, 1897)
- Species Clausilia bosniensis Zelebor, 1868 accepted as Herilla bosniensis (Vest, 1867)
- Species Clausilia bosniensis Vest, 1867 accepted as Herilla bosniensis (Vest, 1867)
- Species Clausilia bouddah Bavay & Dautzenberg, 1912 accepted as Oospira bouddah (Bavay & Dautzenberg, 1912)
- Species Clausilia bourcieri Küster, 1853 accepted as Incania bourcieri (Küster, 1853)
- Species Clausilia bourdoti Cossmann, 1889 † accepted as Cylindrellina bourdoti (Cossmann, 1889) †
- Species Clausilia bourguignati Charpentier, 1852
- Species Clausilia braunii Rossmässler, 1836 accepted as Charpentieria itala braunii (Rossmässler, 1836)
- Species Clausilia brembina Strobel, 1850 accepted as Neostyriaca brembina (Strobel, 1850)
- Species Clausilia brevicollis L. Pfeiffer, 1849 accepted as Albinaria brevicollis (L. Pfeiffer, 1849)
- Species Clausilia breviluna Möllendorff, 1901 accepted as Bathyptychia breviplica (Möllendorff, 1886)
- Species Clausilia brevior E. von Martens, 1877 accepted as Stereophaedusa gouldi (A. Adams, 1868)
- Species Clausilia breviplica Möllendorff, 1886 accepted as Bathyptychia (Brachyptychia) breviplica (Möllendorff, 1886)
- Species Clausilia brevis K. Miller, 1907 †
- Species Clausilia brevis Cantraine, 1835
- Species Clausilia broderseni O. Boettger & Schmacker, 1894 accepted as Tauphaedusa broderseni (O. Boettger & Schmacker, 1894)
- Species Clausilia brugnoneana Pini, 1885 accepted as Siciliaria calcarae (R. A. Philippi, 1844)
- Species Clausilia brunnea Rossmässler, 1839 accepted as Armenica brunnea (Rossmässler, 1839)
- Species Clausilia buccinella Heude, 1887 accepted as Euphaedusa (Euphaedusa) buccinella (Heude, 1887)
- Species Clausilia bulbus W. H. Benson, 1863 accepted as Oospira bulbus (W. H. Benson, 1863)
- Species Clausilia bulgarica Küster, 1855 accepted as Strigillaria bulgariensis (L. Pfeiffer, 1848)
- Species Clausilia bulgariensis L. Pfeiffer, 1848 accepted as Bulgarica bulgariensis (L. Pfeiffer, 1848)
- Species Clausilia bulimiformis F. Sandberger, 1858 † accepted as Eualopia bulimoides (A. Braun, 1843) †
- Species Clausilia bulimina Gredler, 1892 accepted as Bathyptychia bulimina (Gredler, 1892)
- Species Clausilia bulimoides A. Braun, 1843 † accepted as Eualopia bulimoides (A. Braun, 1843) †
- Species Clausilia bulla L. Pfeiffer, 1848 accepted as Delima laevissima pachygastris (Rossmässler, 1835)
- Species Clausilia burmanica Gude, 1914 accepted as Phaedusa burmanica (Gude, 1914)
- Species Clausilia buschii Küster, 1844 accepted as Zaptyx buschii (Küster, 1844)
- Species Clausilia byzantina Charpentier, 1852 accepted as Albinaria byzantina (Charpentier, 1852)
- Species Clausilia caerulea Deshayes, 1835 accepted as Albinaria caerulea (Deshayes, 1835)
- Species Clausilia calacarae R. A. Philippi, 1844 accepted as Siciliaria calcarae (R. A. Philippi, 1844)
- Species Clausilia callifera Küster, 1853 accepted as Delima vidovichii callifera (Küster, 1853)
- Species Clausilia callistoma Bavay & Dautzenberg, 1899 accepted as Selenophaedusa callistoma (Bavay & Dautzenberg, 1899)
- Species Clausilia callistomella Bavay & Dautzenberg, 1900 accepted as Selenophaedusa callistomella (Bavay & Dautzenberg, 1900)
- Species Clausilia callocincta Küster, 1861 accepted as Delima semirugata (Rossmässler, 1836)
- Species Clausilia callosa L. Pfeiffer, 1842 accepted as Agathylla exarata (Rossmässler, 1835)
- Species Clausilia calopleura Ancey, 1888 accepted as Cristataria calopleura (Ancey, 1888)
- Species Clausilia caloptyx Pilsbry, 1902 accepted as Stereophaedusa caloptyx (Pilsbry, 1902)
- Species Clausilia cambojensis L. Pfeiffer, 1861 accepted as Loosjesia cambojensis (L. Pfeiffer, 1861)
- Species Clausilia campanica Michelin, 1832 † accepted as Coeliaxis campanica (Michelin, 1832) †
- Species Clausilia campylauchen O. Boettger, 1883 accepted as Albinaria campylauchen (O. Boettger, 1883)
- Species Clausilia cana Held, 1836 accepted as Strigillaria cana cana (Held, 1836)
- Species Clausilia canaliculata L. Pfeiffer, 1850
- Species Clausilia canalifera Rossmässler, 1836 accepted as Mentissa canalifera (Rossmässler, 1836)
- Species Clausilia cancellata A. Schmidt, 1868 accepted as Medora armata (Küster, 1844)
- Species Clausilia candida L. Pfeiffer, 1850 accepted as Albinaria candida (L. Pfeiffer, 1850)
- Species Clausilia candidescens Rossmässler, 1835 accepted as Leucostigma candidescens (Rossmässler, 1835)
- Species Clausilia candidilabris Porro, 1841
- Species Clausilia canescens Charpentier, 1852 accepted as Alopia canescens (Charpentier, 1852)
- Species Clausilia cantrainei Deshayes, 1851 accepted as Charpentieria nobilis (L. Pfeiffer, 1848)
- Species Clausilia capillacea Rossmässler, 1836 accepted as Dilataria succineata capillacea (Rossmässler, 1836)
- Species Clausilia capocestiana L. Pfeiffer, 1866 accepted as Delima amoena substricta (Charpentier, 1852)
- Species Clausilia carinthiaca A. Schmidt, 1856 accepted as Macrogastra badia carinthiaca (A. Schmidt, 1856)
- Species Clausilia carissima Rossmässler, 1839 accepted as Bulgarica rugicollis carissima (Rossmässler, 1839)
- Species Clausilia carpathia O. Boettger, 1883 accepted as Albinaria olivieri carpathia (O. Boettger, 1883)
- Species Clausilia caryostoma Möllendorff, 1882 accepted as Megalophaedusa proba caryostoma (Möllendorff, 1882)
- Species Clausilia castalia J. R. Roth, 1856 accepted as Idyla castalia (J. R. Roth, 1856)
- Species Clausilia castanea A. Schmidt, 1868 accepted as Delima latilabris tenebrosa (Küster, 1862)
- Species Clausilia castrensis Mousson, 1859 accepted as Albinaria senilis castrensis (Mousson, 1859)
- Species Clausilia catalonica Fagot, 1884
- Species Clausilia cataphracta L. Pfeiffer, 1848 accepted as Agathylla sulcosa (J. A. Wagner, 1829)
- Species Clausilia cattaroensis Rossmässler, 1835 accepted as Montenegrina cattaroensis (Rossmässler, 1835)
- Species Clausilia caucasica A. Schmidt, 1868 accepted as Micropontica caucasica (A. Schmidt, 1868)
- Species Clausilia cazioti Bavay & Dautzenberg, 1909 accepted as Selenophaedusa cazioti (Bavay & Dautzenberg, 1909)
- Species Clausilia cecilei L. Pfeiffer, 1847 accepted as Macrophaedusa cecillii (L. Pfeiffer, 1847)
- Species Clausilia cecillei R. A. Philippi, 1847 accepted as Hemiphaedusa cecillei (R. A. Philippi, 1847)
- Species Clausilia cecillii L. Pfeiffer, 1847 accepted as Macrophaedusa cecillii (L. Pfeiffer, 1847)
- Species Clausilia cedretorum Bourguignat, 1863
- Species Clausilia celebensis E. A. Smith, 1896 accepted as Paraphaedusa celebensis (E. A. Smith, 1896)
- Species Clausilia celsa Gredler, 1892 accepted as Celsiphaedusa celsa (Gredler, 1892)
- Species Clausilia cerata Rossmässler, 1836 accepted as Cochlodina cerata (Rossmässler, 1836)
- Species Clausilia ceresolensis H. Nordsieck, 2013 †
- Species Clausilia cervicalis Bavay & Dautzenberg, 1909 accepted as Hemiphaedusa cervicalis (Bavay & Dautzenberg, 1909)
- Species Clausilia cetivora Heude, 1882 accepted as Tauphaedusa tau cetivora (Heude, 1882)
- Species Clausilia ceylanica W. H. Benson, 1863 accepted as Phaedusa ceylanica (W. H. Benson, 1863)
- Species Clausilia chacaensis Lubomirski, 1880 accepted as Incania chacaensis (Lubomirski, 1880)
- Species Clausilia charlotia Risso, 1826 accepted as Granaria variabilis (Draparnaud, 1801)
- Species Clausilia charpentieri L. Pfeiffer, 1850 accepted as Isabellaria saxicola charpentieri (L. Pfeiffer, 1850)
- Species Clausilia chersonensis L. Pfeiffer, 1841 accepted as Delima semirugata (Rossmässler, 1836)
- Species Clausilia chiemhoaensis Sykes, 1902 accepted as Selenophaedusa chiemhoaensis (Sykes, 1902)
- Species Clausilia chinensis L. Pfeiffer, 1849
- Species Clausilia cholerigena Heude, 1889 accepted as Serriphaedusa cholerigena (Heude, 1889)
- Species Clausilia chondriformis De Cristofori & Jan, 1832
- Species Clausilia circinnata Heude, 1890
- Species Clausilia circumdata L. Pfeiffer, 1848 accepted as Euxina circumdata (L. Pfeiffer, 1848)
- Species Clausilia cladoptyx Pilsbry, 1905 accepted as Zaptyx cladoptyx (Pilsbry, 1905)
- Species Clausilia clandestina Rossmässler, 1857 accepted as Isabellaria clandestina (Rossmässler, 1857)
- Species Clausilia clara O. Boettger, 1878 accepted as Albinaria praeclara rudis (L. Pfeiffer, 1865)
- Species Clausilia clathra L. Pfeiffer, 1868 accepted as Medora armata (Küster, 1844)
- Species Clausilia clathrata E. A. Bielz, 1856 accepted as Alopia bielzii clathrata (E. A. Bielz, 1856)
- Species Clausilia clava F. Sandberger, 1875 † accepted as Triptychia clava (F. Sandberger, 1875) †
- Species Clausilia clavata Rossmässler, 1836 accepted as Charpentieria clavata (Rossmässler, 1836)
- Species Clausilia claviformis L. Pfeiffer, 1850 accepted as Tauphaedusa claviformis (L. Pfeiffer, 1850)
- Species Clausilia clavulus Heude, 1887 accepted as Euphaedusa (Dentiphaedusa) spinula clavulus (Heude, 1887)
- Species Clausilia coccygea Gredler, 1888 accepted as Phaedusa (Phaedusa) coccygea (Gredler, 1888)
- Species Clausilia cochinchinensis L. Pfeiffer, 1841 accepted as Phaedusa cochinchinensis (L. Pfeiffer, 1841)
- Species Clausilia coerulea Rossmässler, 1835 accepted as Albinaria caerulea (Deshayes, 1835)
- Species Clausilia cognata O. Boettger, 1877
- Species Clausilia colbeauiana L. Pfeiffer, 1861 accepted as Cristataria colbeauiana (L. Pfeiffer, 1861)
- Species Clausilia colchica L. Pfeiffer, 1857 accepted as Elia somchetica (L. Pfeiffer, 1846)
- Species Clausilia colombeliana Heude, 1882 accepted as Euphaedusa (Euphaedusa) aculus (W. H. Benson, 1842)
- Species Clausilia comensis L. Pfeiffer, 1849 accepted as Cochlodina comensis (L. Pfeiffer, 1850)
- Species Clausilia commena Retowski, 1889 accepted as Armenica griseofusca (Mousson, 1876)
- Species Clausilia comminuta Heude, 1890
- Species Clausilia commutata Rossmässler, 1836 accepted as Cochlodina costata ungulata (Rossmässler, 1835)
- Species Clausilia compressa L. Pfeiffer, 1850 accepted as Albinaria compressa (L. Pfeiffer, 1850)
- Species Clausilia comta L. Pfeiffer, 1842 accepted as Agathylla strigillata (Rossmässler, 1835)
- Species Clausilia concilians E. A. Bielz, 1853 accepted as Graciliaria inserta (Porro, 1841)
- Species Clausilia conemenosi O. Boettger, 1883 accepted as Albinaria hians conemenosi (O. Boettger, 1883)
- Species Clausilia confinata L. Pfeiffer, 1859 accepted as Charpentieria scarificata (L. Pfeiffer, 1856)
- Species Clausilia conformata L. Pfeiffer, 1853 accepted as Bulgarica vetusta (Rossmässler, 1836)
- Species Clausilia confusa O. Boettger, 1878 accepted as Albinaria confusa (O. Boettger, 1878)
- Species Clausilia conica Anton, 1838
- Species Clausilia conjuncta Küster, 1860 accepted as Bulgarica vetusta conjuncta (Küster, 1860)
- Species Clausilia consentanea A. Schmidt, 1868 accepted as Delima binotata consentanea (A. Schmidt, 1868)
- Species Clausilia conspersa L. Pfeiffer, 1848 accepted as Strigilodelima conspersa conspersa (L. Pfeiffer, 1848)
- Species Clausilia conspurcata Rossmässler, 1836 accepted as Delima blanda conspurcata (Rossmässler, 1836)
- Species Clausilia constellata Heude, 1887 accepted as Papilliphaedusa constellata (Heude, 1887)
- Species Clausilia contaminata Rossmässler, 1835 accepted as Albinaria contaminata (Rossmässler, 1835)
- Species Clausilia contorta de Boissy, 1848 † accepted as Neniopsis contorta (de Boissy, 1848) †
- Species Clausilia cookei Preston, 1912 accepted as Synprosphyma cookei (Preston, 1912)
- Species Clausilia corcyrensis Mousson, 1859 accepted as Albinaria senilis corcyrensis (Mousson, 1859)
- Species Clausilia cornea L. Pfeiffer, 1842 accepted as Stigmatica lamellata (Rossmässler, 1836)
- Species Clausilia cornea Philippi, 1846 accepted as Oospira cornea (Philippi, 1846)
- Species Clausilia corpulenta L. Pfeiffer, 1868 accepted as Dilataria marcki (L. Pfeiffer, 1868)
- Species Clausilia corpulenta L. Pfeiffer, 1848 accepted as Elia corpulenta (L. Pfeiffer, 1848)
- Species Clausilia corrugata L. Pfeiffer, 1842 accepted as Medora dalmatina dalmatina (Rossmässler, 1835)
- Species Clausilia corticina L. Pfeiffer, 1842 accepted as Phaedusa corticina (L. Pfeiffer, 1842)
- Species Clausilia corynodes Held, 1836 accepted as Neostyriaca corynodes (Held, 1836)
- Species Clausilia cossoni A. Letourneux, 1887 accepted as Mauritanica cossoni (A. Letourneux, 1887)
- Species Clausilia costata (C. Pfeiffer, 1828) accepted as Cochlodina costata costata (C. Pfeiffer, 1828)
- Species Clausilia costicollis L. Pfeiffer, 1848 accepted as Medora contracta contracta (Rossmässler, 1842)
- Species Clausilia costulata Brusina, 1866 accepted as Delima blanda fulcrata (Rossmässler, 1836)
- Species Clausilia coudeini Bavay & Dautzenberg, 1899 accepted as Formosana coudeini (Bavay & Dautzenberg, 1899)
- Species Clausilia crassicostata L. Pfeiffer, 1856 accepted as Sicania crassicostata (L. Pfeiffer, 1856)
- Species Clausilia crassilabris Rossmässler, 1836 accepted as Delima bilabiata crassilabris (Rossmässler, 1836)
- Species Clausilia crenata F. Sandberger, 1871 † accepted as Palaeostoa crenata (F. Sandberger, 1871) †
- Species Clausilia crenilabium Pilsbry, 1901 accepted as Nesiophaedusa crenilabium (Pilsbry, 1901)
- Species Clausilia crenulata Rossmässler, 1836 accepted as Delima amoena (L. Pfeiffer, 1848)
- Species Clausilia cretensis Rossmässler, 1836 accepted as Albinaria cretensis (Rossmässler, 1836)
- Species Clausilia crispula L. Pfeiffer, 1839 accepted as Sagracoptis crispula (L. Pfeiffer, 1839)
- Species Clausilia cristata Rossmässler, 1836 accepted as Erjavecia bergeri (Rossmässler, 1836)
- Species Clausilia cristatella Küster, 1861 accepted as Albinaria cristatella cristatella (Küster, 1861)
- Species Clausilia critia E. A. Bielz, 1853
- Species Clausilia croatica L. Pfeiffer, 1866 accepted as Delima binotata satura (Rossmässler, 1836)
- Species Clausilia crossei Hidalgo, 1869 accepted as Incania crossei (Hidalgo, 1869)
- Species Clausilia cruciata (S. Studer, 1820)
- Species Clausilia cruda Rossmässler, 1835 accepted as Macrogastra plicatula (Draparnaud, 1801)
- Species Clausilia cumingiana L. Pfeiffer, 1845 accepted as Phaedusa cumingiana (L. Pfeiffer, 1845)
- Species Clausilia curta Rossmässler, 1836 accepted as Cochlodina costata curta (Rossmässler, 1836)
- Species Clausilia curta Anton, 1838
- Species Clausilia curzolana Küster, 1861 accepted as Delima vidovichii (L. Pfeiffer, 1846)
- Species Clausilia cusmichii Walderdorff, 1864 accepted as Delima montenegrina (L. Pfeiffer, 1848)
- Species Clausilia cuspidata Held, 1836 accepted as Clausilia cruciata cuspidata Held, 1836
- Species Clausilia cuvieri Delafond & Depéret, 1893 † accepted as Emarginaria cuvieri (Delafond & Depéret, 1893) †
- Species Clausilia cyclostoma L. Pfeiffer, 1850 accepted as Cyclonenia cyclostoma (L. Pfeiffer, 1850)
- Species Clausilia cylindrella Heude, 1887 accepted as Euphaedusa (Euphaedusa) cylindrella (Heude, 1887)
- Species Clausilia cylindrelliformis Bourguignat, 1855 accepted as Cristataria cylindrelliformis (Bourguignat, 1855)
- Species Clausilia cylindrica L. Pfeiffer, 1846 accepted as Cylindrophaedusa cylindrica (L. Pfeiffer, 1846)
- Species Clausilia cylindricollis Küster, 1861 accepted as Delima vidovichii robusta (Küster, 1847)
- Species Clausilia cymatodes Pilsbry, 1905 accepted as Stereophaedusa cymatodes (Pilsbry, 1905)
- Species Clausilia dacica L. Pfeiffer, 1848 accepted as Herilla ziegleri dacica (L. Pfeiffer, 1848)
- Species Clausilia daemonorum Pilsbry, 1902 accepted as Zaptyx daemonorum daemonorum (Pilsbry, 1902)
- Species Clausilia dalli Pilsbry, 1902 accepted as Megalophaedusa dalli (Pilsbry, 1902)
- Species Clausilia dalmatina Rossmässler, 1835 accepted as Medora dalmatina (Rossmässler, 1835)
- Species Clausilia dautzenbergi Morlet, 1893 accepted as Neniauchenia dautzenbergi (Morlet, 1893)
- Species Clausilia davidiana Bourguignat, 1868 accepted as Cristataria strangulata (L. Pfeiffer, 1841)
- Species Clausilia dazueri L. Pfeiffer, 1868 accepted as Dilataria succineata dazueri (L. Pfeiffer, 1868)
- Species Clausilia deburghiae Paulucci, 1878 accepted as Papillifera solida deburghiae (Paulucci, 1878)
- Species Clausilia decapitata Pilsbry, 1902 accepted as Megalophaedusa decapitata (Pilsbry, 1902)
- Species Clausilia decemplicata Sacco, 1886 † accepted as Serrulella decemplicata (Sacco, 1886) †
- Species Clausilia decipiens Rossmässler, 1835 accepted as Delima latilabris (J. A. Wagner, 1829)
- Species Clausilia decisa Rossmässler, 1836 accepted as Bulgarica vetusta (Rossmässler, 1836)
- Species Clausilia decollata Potiez & Michaud, 1838 accepted as Siciliaria grohmanniana (Rossmässler, 1836)
- Species Clausilia decorata L. Pfeiffer, 1848 accepted as Delima laevissima (Rossmässler, 1833)
- Species Clausilia decurtata Heude, 1885 accepted as Excussispira decurtata (Heude, 1885)
- Species Clausilia decussata E. von Martens, 1877 accepted as Megalophaedusa (Vitriphaedusa) decussata (E. von Martens, 1877)
- Species Clausilia deenia Cantraine, 1835
- Species Clausilia degenerata Pilsbry, 1905 accepted as Stereophaedusa oshimae degenerata (Pilsbry, 1905)
- Species Clausilia degeneris Preston, 1911 accepted as Macroptychia degeneris (Preston, 1911)
- Species Clausilia deglupta O. Boettger, 1878 accepted as Albinaria eburnea (L. Pfeiffer, 1854)
- Species Clausilia dehmi (H. Nordsieck, 2007) † accepted as Neostyriaca dehmi H. Nordsieck, 2007 †
- Species Clausilia delavayana Heude, 1885 accepted as Oospira (Paraformosana) delavayana (Heude, 1885)
- Species Clausilia delesserti Bourguignat, 1853 accepted as Cristataria delesserti (Bourguignat, 1853)
- Species Clausilia deltostoma Küster, 1860 accepted as Boettgeria deltostoma (R. T. Lowe, 1831)
- Species Clausilia deltostoma R. T. Lowe, 1831 accepted as Boettgeria deltostoma (R. T. Lowe, 1831)
- Species Clausilia demangei Bavay & Dautzenberg, 1909 accepted as Euryauchenia demangei (Bavay & Dautzenberg, 1909)
- Species Clausilia denegabilis L. Pfeiffer, 1848 accepted as Agathylla exarata (Rossmässler, 1835)
- Species Clausilia denegabilis Küster, 1847 accepted as Agathylla exarata (Rossmässler, 1835)
- Species Clausilia denitculata Reuss, 1861 † accepted as Serrulella schwageri (O. Boettger, 1877) †
- Species Clausilia densestriata Rossmässler, 1836 accepted as Macrogastra densestriata (Rossmässler, 1836)
- Species Clausilia densicostulata F. Sandberger, 1871 † accepted as Triptychia densicostulata (F. Sandberger, 1871) †
- Species Clausilia denticulata (Olivier, 1801) accepted as Strigillaria denticulata (Olivier, 1801)
- Species Clausilia depauperata R. T. Lowe, 1863 accepted as Boettgeria depauperata (R. T. Lowe, 1863)
- Species Clausilia deperdita Oppenheim, 1890 † accepted as Disjunctaria deperdita (Oppenheim, 1890) †
- Species Clausilia deplana L. Pfeiffer, 1841 accepted as Delima semirugata vibex (Rossmässler, 1839)
- Species Clausilia derasa Mousson, 1863 accepted as Elia derasa (Mousson, 1863)
- Species Clausilia detersa Rossmässler, 1836 accepted as Mentissa canalifera (Rossmässler, 1836)
- Species Clausilia dextrogyra Bavay & Dautzenberg, 1909 accepted as Formosana dextrogyra (Bavay & Dautzenberg, 1909)
- Species Clausilia dextrorsa O. Boettger, 1877 accepted as Carinigera dextrorsa (O. Boettger, 1877)
- Species Clausilia diaconalis Heude, 1889 accepted as Euphaedusa (Dentiphaedusa) spinula diaconalis (Heude, 1889)
- Species Clausilia diaphana Küster, 1861 accepted as Delima blanda conspurcata (Rossmässler, 1836)
- Species Clausilia dichroa Bavay & Dautzenberg, 1899 accepted as Phaedusa dichroa (Bavay & Dautzenberg, 1899)
- Species Clausilia difficilis Retowski, 1889 accepted as Roseniella difficilis (Retowski, 1889)
- Species Clausilia digamma O. Boettger, 1878 accepted as Delima montenegrina (L. Pfeiffer, 1848)
- Species Clausilia digonoptyx O. Boettger, 1877 accepted as Tauphaedusa digonoptyx (O. Boettger, 1877)
- Species Clausilia diminuta L. Pfeiffer, 1846 accepted as Agathylla sulcosa diminuta (L. Pfeiffer, 1846)
- Species Clausilia discolor L. Pfeiffer, 1846 accepted as Albinaria discolor (L. Pfeiffer, 1846)
- Species Clausilia disjuncta Mortillet, 1853 accepted as Armenica disjuncta (Mortillet, 1853)
- Species Clausilia distans L. Pfeiffer, 1865 accepted as Albinaria teres distans (L. Pfeiffer, 1865)
- Species Clausilia distantilirata G. B. Sowerby II, 1877
- Species Clausilia distinguenda Rossmässler, 1836 accepted as Ruthenica filograna filograna (Rossmässler, 1836)
- Species Clausilia distinguenda Möllendorff, 1873
- Species Clausilia divergens Küster, 1876 accepted as Delima latilabris tenebrosa (Küster, 1862)
- Species Clausilia dohrni L. Pfeiffer, 1861 accepted as Gonionenia dohrni (L. Pfeiffer, 1861)
- Species Clausilia doriae Pini, 1885
- Species Clausilia drakakisi Maltzan, 1884 accepted as Albinaria praeclara drakakisi (Maltzan, 1884)
- Species Clausilia dubia Draparnaud, 1805
- Species Clausilia dubiosa Clessin, 1882 accepted as Cochlodina dubiosa (Clessin, 1882)
- Species Clausilia duboisi Charpentier, 1852 accepted as Mucronaria duboisi (Charpentier, 1852)
- Species Clausilia ducalis Kobelt, 1876 accepted as Megalophaedusa ducalis (Kobelt, 1876)
- Species Clausilia duella Mabille, 1887 accepted as Dautzenbergiella duella (Mabille, 1887)
- Species Clausilia dunkeri L. Pfeiffer, 1850 accepted as Albinaria forbesiana dunkeri (L. Pfeiffer, 1850)
- Species Clausilia duporti Bavay & Dautzenberg, 1915 accepted as Phaedusa (Phaedusa) dichroa duporti (Bavay & Dautzenberg, 1915)
- Species Clausilia dutaillyana Bourguignat, 1868 accepted as Cristataria dutaillyana (Bourguignat, 1868)
- Species Clausilia dystherata Jickeli, 1874 accepted as Macroptychia dystherata (Jickeli, 1874)
- Species Clausilia eastlakeana Möllendorff, 1882 accepted as Reinia eastlakeana (Möllendorff, 1882)
- Species Clausilia eburnea L. Pfeiffer, 1855 accepted as Albinaria eburnea (L. Pfeiffer, 1854)
- Species Clausilia echigoensis Pilsbry, 1903 accepted as Stereophaedusa japonica echigoensis (Pilsbry, 1903)
- Species Clausilia echo Pilsbry, 1909 accepted as Reinia echo (Pilsbry, 1909)
- Species Clausilia eckingensis F. Sandberger, 1875 † accepted as Eualopia eckingensis (F. Sandberger, 1875) †
- Species Clausilia edmondi de Boissy, 1848 † accepted as Laminifera edmondi (de Boissy, 1848) †
- Species Clausilia egena Küster, 1860 accepted as Delima albocincta sororia (A. Schmidt, 1868)
- Species Clausilia ehrenbergii J. R. Roth, 1855 accepted as Cristataria delesserti (Bourguignat, 1853)
- Species Clausilia eichwaldi Siemaschko, 1847 accepted as Elia somchetica (L. Pfeiffer, 1846)
- Species Clausilia elata Rossmässler, 1836 accepted as Vestia elata (Rossmässler, 1836)
- Species Clausilia elegans L. Pfeiffer, 1839 accepted as Gongylostoma elegans (L. Pfeiffer, 1839)
- Species Clausilia elegans E. A. Bielz, 1852 accepted as Alopia glorifica elegantissima H. Nordsieck, 1977
- Species Clausilia elegans Cantraine, 1835
- Species Clausilia elegans T. Hutton, 1837
- Species Clausilia elegantula L. Pfeiffer, 1848 accepted as Delima amoena (L. Pfeiffer, 1848)
- Species Clausilia elisabethae Möllendorff, 1881 accepted as Phaedusa (Phaedusa) elisabethae (Möllendorff, 1881)
- Species Clausilia elongata Cantraine, 1835
- Species Clausilia emersoniana Pilsbry, 1913
- Species Clausilia entospira Pilsbry, 1901 accepted as Zaptyx entospira (Pilsbry, 1901)
- Species Clausilia epistomium Küster, 1845 accepted as Columbinia epistomium (Küster, 1845)
- Species Clausilia equestris Küster, 1860 accepted as Medora stenostoma stenostoma (Rossmässler, 1839)
- Species Clausilia eris L. Pfeiffer, 1866 accepted as Medora eris (L. Pfeiffer, 1866)
- Species Clausilia erivanensis Issel, 1865 accepted as Serrulina serrulata (L. Pfeiffer, 1847)
- Species Clausilia erjaveci O. Boettger, 1879 accepted as Delima montenegrina muralis (Küster, 1860)
- Species Clausilia escheri F. Sandberger, 1875 † accepted as Triptychia escheri (F. Sandberger, 1875) †
- Species Clausilia euholostoma Pilsbry, 1900 accepted as Reinia euholostoma (Pilsbry, 1900)
- Species Clausilia eumeces O. Boettger, 1889 accepted as Albinaria turrita eumeces (O. Boettger, 1889)
- Species Clausilia eupleura Bavay & Dautzenberg, 1899 accepted as Phaedusa lypra eupleura (Bavay & Dautzenberg, 1899)
- Species Clausilia eurystoma E. von Martens, 1877 accepted as Stereophaedusa (Mesophaedusa) japonica (Crosse, 1871)
- Species Clausilia euzieriana Bourguignat, 1870 accepted as Macrogastra (Macrogastra) lineolata euzieriana (Bourguignat, 1870)
- Species Clausilia evae Sykes, 1896 accepted as Columbinia evae (Sykes, 1896)
- Species Clausilia exarata Rossmässler, 1835 accepted as Agathylla exarata (Rossmässler, 1835)
- Species Clausilia excellens L. Pfeiffer, 1861 accepted as Nesiophaedusa excellens (L. Pfeiffer, 1861)
- Species Clausilia excurrens E. von Martens, 1864 accepted as Juttingia excurrens (E. von Martens, 1864)
- Species Clausilia exesa Spix, 1827 accepted as Burringtonia exesa (Spix, 1827)
- Species Clausilia exilis L. Pfeiffer, 1842 accepted as Dilataria succineata succineata (Rossmässler, 1836)
- Species Clausilia exoptata A. Schmidt, 1856 accepted as Neostyriaca whateliana exoptata (A. Schmidt, 1856)
- Species Clausilia expansilabris O. Boettger, 1877 accepted as Megalophaedusa expansilabris (O. Boettger, 1877)
- Species Clausilia extensa L. Pfeiffer, 1865 accepted as Albinaria teres extensa (L. Pfeiffer, 1865)
- Species Clausilia faberi O. Boettger & Schmacker, 1894 accepted as Euphaedusa (Telophaedusa) faberi (O. Boettger & Schmacker, 1894)
- Species Clausilia falcifera Bavay & Dautzenberg, 1899 accepted as Selenophaedusa falcifera (Bavay & Dautzenberg, 1899)
- Species Clausilia fallax Rossmässler, 1836 accepted as Pseudalinda fallax (Rossmässler, 1836)
- Species Clausilia falliciosa Küster, 1855 accepted as Charpentieria gibbula (Rossmässler, 1836)
- Species Clausilia falsani Locard, 1883 † accepted as Macrogastra loryi (Michaud, 1862) †
- Species Clausilia familiaris Monterosato, 1892 accepted as Papillifera papillaris affinis (R. A. Philippi, 1836)
- Species Clausilia fargesiana Heude, 1885 accepted as Excussispira fargesiana (Heude, 1885)
- Species Clausilia fargesianella Heude, 1885 accepted as Excussispira fargesianella (Heude, 1885)
- Species Clausilia fauciata Rossmässler, 1857 accepted as Cristataria delesserti (Bourguignat, 1853)
- Species Clausilia fausta A. Schmidt, 1868 accepted as Isabellaria saxicola saxicola (L. Pfeiffer, 1848)
- Species Clausilia festiva Küster, 1856 accepted as Strigillaria vetusta festiva (Küster, 1856)
- Species Clausilia filialis E. von Martens, 1903 accepted as Phaedusa filialis (E. von Martens, 1903)
- Species Clausilia filippina Heude, 1882 accepted as Euphaedusa filippina (Heude, 1882)
- Species Clausilia filocostulata Lubomirski, 1880 accepted as Gracilinenia filocostulata (Lubomirski, 1880)
- Species Clausilia filograna Rossmässler, 1836 accepted as Ruthenica filograna (Rossmässler, 1836)
- Species Clausilia filosa Mousson, 1863 accepted as Filosa filosa (Mousson, 1863)
- Species Clausilia filumna L. Pfeiffer, 1866 accepted as Cristataria hedenborgi (L. Pfeiffer, 1850)
- Species Clausilia fimbriata Rossmässler, 1835 accepted as Cochlodina fimbriata (Rossmässler, 1835)
- Species Clausilia firmata Mousson, 1856 accepted as Clausilia derasa Mousson, 1863
- Species Clausilia fischeri Michaud, 1862 † accepted as Nordsieckia fischeri (Michaud, 1862) †
- Species Clausilia fistulata Bavay & Dautzenberg, 1909 accepted as Hemiphaedusa fistulata (Bavay & Dautzenberg, 1909)
- Species Clausilia fitzgeraldae O. Boettger, 1879 accepted as Euphaedusa (Euphaedusa) fitzgeraldae (O. Boettger, 1879)
- Species Clausilia flammulata L. Pfeiffer, 1850 accepted as Albinaria discolor flammulata (L. Pfeiffer, 1850)
- Species Clausilia flava Küster, 1857 accepted as Leucostigma candidescens leucostigma (Rossmässler, 1836)
- Species Clausilia flaveola Bavay & Dautzenberg, 1915 accepted as Oospira semipolita (Bavay & Dautzenberg, 1899)
- Species Clausilia flavescens Heude, 1884 accepted as Tauphaedusa tau (O. Boettger, 1877)
- Species Clausilia forbesiana L. Pfeiffer, 1846 accepted as Albinaria forbesiana (L. Pfeiffer, 1846)
- Species Clausilia formosa L. Pfeiffer, 1848 accepted as Agathylla formosa (Rossmässler, 1835)
- Species Clausilia formosa Rossmässler, 1835 accepted as Agathylla formosa (Rossmässler, 1835)
- Species Clausilia fortunei L. Pfeiffer, 1852 accepted as Macrophaedusa cecillii (L. Pfeiffer, 1847)
- Species Clausilia foveicollis Charpentier, 1852 accepted as Scrobifera taurica (L. Pfeiffer, 1848)
- Species Clausilia franciscana Möllendorff, 1885 accepted as Synprosphyma (Synprosphyma) franciscana (Möllendorff, 1885)
- Species Clausilia frater A. Schmidt, 1868 accepted as Mentissa gracilicosta gracilicosta (Rossmässler, 1836)
- Species Clausilia fraterminor Gredler, 1892 accepted as Synprosphyma fraterminor (Gredler, 1892)
- Species Clausilia fraudigera Rossmässler, 1839 accepted as Bulgarica fraudigera (Rossmässler, 1839)
- Species Clausilia frauenfeldi Rossmässler, 1856 accepted as Macedonica frauenfeldi (Rossmässler, 1856)
- Species Clausilia freyeri L. Pfeiffer, 1848 accepted as Delima binotata gastrolepta (Rossmässler, 1836)
- Species Clausilia freyi Bavay & Dautzenberg, 1899 accepted as Liparophaedusa freyi (Bavay & Dautzenberg, 1899)
- Species Clausilia frigida Heude, 1884 accepted as Euphaedusa (Euphaedusa) aculus (W. H. Benson, 1842)
- Species Clausilia friniana Heude, 1890 accepted as Formosanella friniana (Heude, 1890)
- Species Clausilia fritillaria Frivaldszky, 1835 accepted as Strigillaria fritillaria (Frivaldsky, 1835)
- Species Clausilia frivaldskyana Rossmässler, 1839 accepted as Macedonica marginata frivaldskyana (Rossmässler, 1839)
- Species Clausilia fuchsiana Heude, 1885 accepted as Fuchsiana fuchsiana (Heude, 1885)
- Species Clausilia fulcrata Rossmässler, 1836 accepted as Delima blanda fulcrata (Rossmässler, 1836)
- Species Clausilia fulcrata Paulucci, 1879 accepted as Delima fulcrata (Paulucci, 1879)
- Species Clausilia fuliginea L. Pfeiffer, 1868 accepted as Delima laevissima (Rossmässler, 1833)
- Species Clausilia fulvella Heude, 1882 accepted as Euphaedusa aculus fulvella (Heude, 1882)
- Species Clausilia funiculum Mousson, 1856 accepted as Pontophaedusa funiculum (Mousson, 1856)
- Species Clausilia fusangensis Möllendorff, 1882 accepted as Megalophaedusa pinguis platyauchen (E. von Martens, 1877)
- Species Clausilia fusca De Betta, 1852 accepted as Cochlodina costata fusca (De Betta, 1852)
- Species Clausilia fusiformis W. T. Blanford, 1865 accepted as Oospira fusiformis (W. T. Blanford, 1865)
- Species Clausilia fusorium Mousson, 1876 accepted as Mentissoidea rupicola (Mortillet, 1853)
- Species Clausilia fussiana E. A. Bielz, 1852 accepted as Alopia lischkeana lischkeana (Charpentier, 1852)
- Species Clausilia gaasensis Tournouër, 1882 †
- Species Clausilia galeata Rossmässler, 1839 accepted as Galeata galeata (Rossmässler, 1839)
- Species Clausilia gastrolepta Rossmässler, 1836 accepted as Delima binotata gastrolepta (Rossmässler, 1836)
- Species Clausilia gaudryi Bourguignat, 1868 accepted as Cristataria gaudryi (Bourguignat, 1868)
- Species Clausilia gebennica Fontannes, 1884 † accepted as Triptychia gebennica (Fontannes, 1884) †
- Species Clausilia gemina Gredler, 1881 accepted as Tauphaedusa gemina (Gredler, 1881)
- Species Clausilia genezerethana Tristram, 1865 accepted as Cristataria genezarethana (Tristram, 1865)
- Species Clausilia geophila L. Pfeiffer, 1848 accepted as Delima subcylindrica (Rossmässler, 1836)
- Species Clausilia gereti Bavay & Dautzenberg, 1900 accepted as Phaedusa theristica (Mabille, 1887)
- Species Clausilia gerlachi Möllendorff, 1881 accepted as Oospira (Oospira) gerlachi (Möllendorff, 1881)
- Species Clausilia giardi H. Fischer, 1898 accepted as Tropidauchenia giardi (H. Fischer, 1898)
- Species Clausilia gibbosula Deshayes, 1870 accepted as Synprosphyma (Synprosphyma) gibbosula (Deshayes, 1870)
- Species Clausilia gibbula Rossmässler, 1836 accepted as Charpentieria gibbula (Rossmässler, 1836)
- Species Clausilia giraudi Bourguignat, 1885 accepted as Charpentieria ornata (Rossmässler, 1836)
- Species Clausilia gisota Bavay & Dautzenberg, 1899 accepted as Notoptychia gisota (Bavay & Dautzenberg, 1899)
- Species Clausilia glabella L. Pfeiffer, 1865 accepted as Albinaria eburnea glabella (L. Pfeiffer, 1865)
- Species Clausilia glabrata L. Pfeiffer, 1842 accepted as Delima laevissima (Rossmässler, 1833)
- Species Clausilia glabricollis L. Pfeiffer, 1866 accepted as Albinaria scopulosa glabricollis (L. Pfeiffer, 1866)
- Species Clausilia glorifica Rossmässler, 1856 accepted as Alopia canescens (Charpentier, 1852)
- Species Clausilia glorifica Charpentier, 1852 accepted as Alopia glorifica glorifica (Charpentier, 1852)
- Species Clausilia gobanzi L. Pfeiffer, 1868 accepted as Clausilia dubia speciosa A. Schmidt, 1856
- Species Clausilia goldfussi O. Boettger, 1883 accepted as Albinaria nivea goldfussi (O. Boettger, 1883)
- Species Clausilia goldi Walderdorff, 1864 accepted as Agathylla goldi (Walderdorff, 1864)
- Species Clausilia gospici L. Pfeiffer, 1866 accepted as Delima latilabris opaca (Charpentier, 1852)
- Species Clausilia gouldiana L. Pfeiffer, 1857 accepted as Oospira gouldiana (L. Pfeiffer, 1857)
- Species Clausilia graciae Pilsbry, 1902 accepted as Megalophaedusa (Aulacophaedusa) gracilispira (Möllendorff, 1882)
- Species Clausilia gracilicosta Rossmässler, 1836 accepted as Mentissa gracilicosta (Rossmässler, 1836)
- Species Clausilia graciliformis L. Pfeiffer, 1866 accepted as Medora macascarensis graciliformis (L. Pfeiffer, 1866)
- Species Clausilia gracilior A. Schmidt, 1868 accepted as Mentissa gracilicosta gracilicosta (Rossmässler, 1836)
- Species Clausilia gracilis C. Pfeiffer, 1821 accepted as Clausilia dubia Draparnaud, 1805
- Species Clausilia gracilispira Möllendorff, 1882 accepted as Megalophaedusa gracilispira (Möllendorff, 1882)
- Species Clausilia graeca L. Pfeiffer, 1850 accepted as Albinaria grayana (L. Pfeiffer, 1846)
- Species Clausilia grandis Klein, 1846 † accepted as Triptychia kleini Schnabel, 2006 †
- Species Clausilia grangeri Bavay & Dautzenberg, 1899 accepted as Siphonophaedusa grangeri (Bavay & Dautzenberg, 1899)
- Species Clausilia granulosa Sykes, 1900 accepted as Peruinia peruana (Troschel, 1847)
- Species Clausilia gravida Küster, 1860 accepted as Medora dalmatina gravida (Küster, 1860)
- Species Clausilia grayana L. Pfeiffer, 1846 accepted as Albinaria grayana (L. Pfeiffer, 1846)
- Species Clausilia grimmeri L. Pfeiffer, 1848 accepted as Clausilia dubia grimmeri L. Pfeiffer, 1848
- Species Clausilia grisea Deshayes, 1835 accepted as Albinaria grisea (Deshayes, 1835)
- Species Clausilia grohmanniana Rossmässler, 1836 accepted as Siciliaria grohmanniana (Rossmässler, 1836)
- Species Clausilia grossa L. Pfeiffer, 1848 accepted as Macedonica marginata marginata (Rossmässler, 1835)
- Species Clausilia grossa Rossmässler, 1835 accepted as Cochlodina laminata grossa (Rossmässler, 1835)
- Species Clausilia grossa Gistel, 1848
- Species Clausilia guicciardii J. R. Roth, 1856 accepted as Macedonica guicciardii guicciardii (J. R. Roth, 1856)
- Species Clausilia gulo E. A. Bielz, 1859 accepted as Vestia gulo (E. A. Bielz, 1859)
- Species Clausilia gustavi O. Boettger, 1880 accepted as Likharevia gustavi (O. Boettger, 1880)
- Species Clausilia hakonensis Pilsbry, 1902 accepted as Megalophaedusa hakonensis (Pilsbry, 1902)
- Species Clausilia hamata O. Boettger, 1888 accepted as Euxinastra hamata (O. Boettger, 1888)
- Species Clausilia hamonvillei Bavay & Dautzenberg, 1899 accepted as Phaedusa lypra (Mabille, 1887)
- Species Clausilia hanleyana L. Pfeiffer, 1850 accepted as Isabellaria saxicola charpentieri (L. Pfeiffer, 1850)
- Species Clausilia hasta Küster, 1857 accepted as Bulgarica rugicollis rugicollis (Rossmässler, 1836)
- Species Clausilia hebes A. Schmidt, 1868 accepted as Delima blanda conspurcata (Rossmässler, 1836)
- Species Clausilia hectica Küster, 1860 accepted as Delima blanda (Rossmässler, 1836)
- Species Clausilia hedenborgi L. Pfeiffer, 1850 accepted as Cristataria hedenborgi (L. Pfeiffer, 1850)
- Species Clausilia hedleyi Pilsbry, 1905 accepted as Zaptyx hedleyi (Pilsbry, 1905)
- Species Clausilia heldii Küster, 1844
- Species Clausilia helenae Küster, 1876 accepted as Delima helenae (Küster, 1876)
- Species Clausilia helvetica F. Sandberger, 1875 † accepted as Triptychia mayeri H. Nordsieck, 1998 †
- Species Clausilia helvola Küster, 1853 accepted as Montenegrina helvola helvola (Küster, 1853)
- Species Clausilia hensaniensis Gredler, 1901 accepted as Margaritiphaedusa hensaniensis (Gredler, 1901)
- Species Clausilia hepatica Küster, 1855 accepted as Clausilia pumila (C. Pfeiffer, 1828)
- Species Clausilia heracleensis O. Boettger, 1883 accepted as Albinaria brevicollis heracleensis (O. Boettger, 1883)
- Species Clausilia hereditaria Westerlund, 1898
- Species Clausilia hetaera L. Pfeiffer, 1848 accepted as Euxina hetaera (L. Pfeiffer, 1848)
- Species Clausilia heterochroa Westerlund, 1894 accepted as Albinaria grisea heterochroa (Westerlund, 1894)
- Species Clausilia heteroptyx Pilsbry, 1902 accepted as Mundiphaedusa heteroptyx (Pilsbry, 1902)
- Species Clausilia heterostropha Risso, 1826 accepted as Papillifera solida (Draparnaud, 1805)
- Species Clausilia heudeana Möllendorff, 1882 accepted as Zaptyx heudeana (Möllendorff, 1882)
- Species Clausilia hians O. Boettger, 1878 accepted as Albinaria hians (O. Boettger, 1878)
- Species Clausilia hickonis O. Boettger, 1877 accepted as Stereophaedusa hickonis (O. Boettger, 1877)
- Species Clausilia hierosolymitana Bourguignat, 1868 accepted as Elia moesta moesta (Rossmässler, 1839)
- Species Clausilia higoensis Pilsbry, 1901 accepted as Paganizaptyx stimpsoni subgibbera (O. Boettger, 1877)
- Species Clausilia hilgendorfi E. von Martens, 1877 accepted as Stereophaedusa (Mesophaedusa) japonica (Crosse, 1871)
- Species Clausilia hiraseana Pilsbry, 1901 accepted as Stereophaedusa hiraseana (Pilsbry, 1901)
- Species Clausilia hirasei Pilsbry, 1900 accepted as Zaptyx hirasei (Pilsbry, 1900)
- Species Clausilia holotrema Pilsbry, 1902 accepted as Reinia holotrema (Pilsbry, 1902)
- Species Clausilia homalorhaphe L. Pfeiffer, 1850 accepted as Albinaria candida homalorhaphe (L. Pfeiffer, 1850)
- Species Clausilia hondana Pilsbry, 1900
- Species Clausilia honorifica L. Pfeiffer, 1853 accepted as Medora contracta contracta (Rossmässler, 1842)
- Species Clausilia hosayaka Pilsbry, 1905 accepted as Megalophaedusa hosayaka (Pilsbry, 1905)
- Species Clausilia houdasi Cossmann, 1889 † accepted as Laminifera houdasi (Cossmann, 1889) †
- Species Clausilia houssayi H. Fischer, 1898 accepted as Phaedusa lypra (Mabille, 1887)
- Species Clausilia huebneri L. Pfeiffer, 1848 accepted as Elia huebneri (L. Pfeiffer, 1848)
- Species Clausilia huet Mortillet, 1853 accepted as Armenica huet (Mortillet, 1853)
- Species Clausilia humilis Küster, 1860 accepted as Delima blanda conspurcata (Rossmässler, 1836)
- Species Clausilia hunana Gredler, 1881 accepted as Tauphaedusa tau hunana (Gredler, 1881)
- Species Clausilia hungerfordiana Möllendorff, 1882 accepted as Reinia hungerfordiana (Möllendorff, 1882)
- Species Clausilia hupeana Gredler, 1892 accepted as Bathyptychia hupeana (Gredler, 1892)
- Species Clausilia hyperaptyx Pilsbry, 1905 accepted as Zaptyx hyperaptyx (Pilsbry, 1905)
- Species Clausilia hyperolia E. von Martens, 1877 accepted as Zaptyx (Zaptychopsis) buschi (Küster, 1844)
- Species Clausilia hyperoptyx Pilsbry, 1900 accepted as Zaptyx hyperoptyx (Pilsbry, 1900)
- Species Clausilia iberica J. R. Roth, 1850 accepted as Euxinastra (Odonteuxina) iberica (J. R. Roth, 1850)
- Species Clausilia idaea L. Pfeiffer, 1850 accepted as Albinaria idaea (L. Pfeiffer, 1850)
- Species Clausilia ikiensis Pilsbry, 1905 accepted as Zaptyx stimpsoni ikiensis (Pilsbry, 1905)
- Species Clausilia imitatrix O. Boettger, 1879 accepted as Lampedusa imitatrix (O. Boettger, 1879)
- Species Clausilia impura Küster, 1857 accepted as Leucostigma candidescens leucostigma (Rossmässler, 1836)
- Species Clausilia inaequalis A. Schmidt, 1868 accepted as Cochlodina inaequalis (A. Schmidt, 1868)
- Species Clausilia inanis Bavay & Dautzenberg, 1909 accepted as Phaedusa lypra inanis (Bavay & Dautzenberg, 1909)
- Species Clausilia incerta Küster, 1861 accepted as Stigmatica incerta (Küster, 1861)
- Species Clausilia incisa Küster, 1876 accepted as Cochlodina bidens (Linnaeus, 1758)
- Species Clausilia incommoda O. Boettger, 1878 accepted as Albinaria contaminata muraria (A. Schmidt, 1868)
- Species Clausilia inconstans Mousson, 1859 accepted as Albinaria senilis inconstans (Mousson, 1859)
- Species Clausilia incrustata O. Boettger, 1883 accepted as Albinaria nivea nivea (L. Pfeiffer, 1854)
- Species Clausilia index Mousson, 1863 accepted as Mucronaria index (Mousson, 1863)
- Species Clausilia indifferens F. Sandberger, 1870 † accepted as Disjunctaria indifferens (F. Sandberger, 1870) †
- Species Clausilia indigena A. Schmidt, 1868 accepted as Albinaria profuga (Charpentier, 1852)
- Species Clausilia indurata Heude, 1887 accepted as Oospira (Paraformosana) indurata (Heude, 1887)
- Species Clausilia infantilis Gredler, 1890 accepted as Bathyptychia (Bathyptychia) infantilis (Gredler, 1890)
- Species Clausilia infecta Heude, 1887 accepted as Streptodera trachelostropha (Möllendorff, 1885)
- Species Clausilia infirma Fagot, 1879
- Species Clausilia inopinata Traub, 1938 † accepted as Rillyopsis inopinata (Traub, 1938) †
- Species Clausilia inserta Porro, 1841 accepted as Graciliaria inserta (Porro, 1841)
- Species Clausilia insignis A. Gould, 1843 accepted as Oospira (Oospira) insignis (A. Gould, 1843)
- Species Clausilia inspersa Charpentier, 1852 accepted as Albinaria virginea (L. Pfeiffer, 1846)
- Species Clausilia insularis Heude, 1882 accepted as Euphaedusa (Euphaedusa) aculus insularis (Heude, 1882)
- Species Clausilia intercedens A. Schmidt, 1857 accepted as Alopia glorifica intercedens (A. Schmidt, 1857)
- Species Clausilia interlamellaris E. von Martens, 1876 accepted as Stereophaedusa interlamellaris (E. von Martens, 1876)
- Species Clausilia intermedia L. Pfeiffer, 1847 accepted as Cochlodina costata intermedia (L. Pfeiffer, 1847)
- Species Clausilia interrupta (C. Pfeiffer, 1828) accepted as Fusulus interruptus (C. Pfeiffer, 1828)
- Species Clausilia intricata Mousson, 1859 accepted as Strigillaria bulgariensis intricata (Mousson, 1859)
- Species Clausilia intrusa A. Schmidt, 1868 accepted as Muticaria macrostoma oscitans (Charpentier, 1852)
- Species Clausilia inuncta L. Pfeiffer, 1849 accepted as Macrogastra plicatula (Draparnaud, 1801)
- Species Clausilia inversa Heude, 1887 accepted as Excussispira inversa (Heude, 1887)
- Species Clausilia ioes W. H. Benson, 1852 accepted as Cylindrophaedusa ios (W. H. Benson, 1852)
- Species Clausilia ios W. H. Benson, 1852 accepted as Cylindrophaedusa ios (W. H. Benson, 1852)
- Species Clausilia iotaptyx Pilsbry, 1900 accepted as Megalophaedusa iotaptyx (Pilsbry, 1900)
- Species Clausilia irregularis Rossmässler, 1835 accepted as Agathylla sulcosa irregularis (Rossmässler, 1835)
- Species Clausilia isabellina L. Pfeiffer, 1842 accepted as Isabellaria isabellina isabellina (L. Pfeiffer, 1842)
- Species Clausilia ischna Pilsbry, 1901 accepted as Paganizaptyx stimpsoni subgibbera (O. Boettger, 1877)
- Species Clausilia itala G. von Martens, 1824 accepted as Charpentieria itala (G. von Martens, 1824)
- Species Clausilia jacobiana Pilsbry, 1902 accepted as Stereophaedusa jacobiana (Pilsbry, 1902)
- Species Clausilia janinensis Mousson, 1859 accepted as Montenegrina janinensis (Mousson, 1859)
- Species Clausilia janseniana Heude, 1885 accepted as Tauphaedusa tau janseniana (Heude, 1885)
- Species Clausilia japonica Crosse, 1871 accepted as Stereophaedusa japonica (Crosse, 1871)
- Species Clausilia javana L. Pfeiffer, 1841 accepted as Oospira javana (L. Pfeiffer, 1841)
- Species Clausilia jemjemensis Connolly, 1928 accepted as Macroptychia jemjemensis (Connolly, 1928)
- Species Clausilia joinvillensis Bourguignat, 1869 †
- Species Clausilia joncheryensis Deshayes, 1863 † accepted as Neniopsis joncheryensis (Deshayes, 1863) †
- Species Clausilia jonica L. Pfeiffer, 1866 accepted as Albinaria jonica (L. Pfeiffer, 1866)
- Species Clausilia josephinae O. Boettger, 1880 accepted as Isabellaria perplana josephinae (O. Boettger, 1880)
- Species Clausilia judaica Bourguignat, 1868 accepted as Cristataria strangulata (L. Pfeiffer, 1841)
- Species Clausilia jugularis Vest, 1859 accepted as Alinda jugularis (Vest, 1859)
- Species Clausilia julii Gredler, 1887 accepted as Phaedusa (Metaphaedusa) hilberi (O. Boettger, 1884)
- Species Clausilia junghuhni Küster, 1844 accepted as Oospira junghuhni (Küster, 1844)
- Species Clausilia karsteniana Dohrn, 1860 accepted as Neniops karstenianus (Dohrn, 1860)
- Species Clausilia kelantanense Sykes, 1902 accepted as Phaedusa kelantanensis (Sykes, 1902)
- Species Clausilia kelantanensis Sykes, 1902 accepted as Phaedusa kelantanensis (Sykes, 1902)
- Species Clausilia kephissiae J. R. Roth, 1855 accepted as Idyla bicristata kephissiae (J. R. Roth, 1855)
- Species Clausilia kikaiensis Pilsbry, 1905 accepted as Zaptyx kikaiensis (Pilsbry, 1905)
- Species Clausilia klaptoczi Sturany, 1908 accepted as Barcania klaptoczi (Sturany, 1908)
- Species Clausilia kobeltiana Küster, 1876 accepted as Stigmatica kobeltiana (Küster, 1876)
- Species Clausilia kobensis E. A. Smith, 1876
- Species Clausilia kokeilii L. Pfeiffer, 1848 accepted as Delima blanda conspurcata (Rossmässler, 1836)
- Species Clausilia kolenatii Siemaschko, 1847 accepted as Elia somchetica (L. Pfeiffer, 1846)
- Species Clausilia kreglingeri L. Pfeiffer, 1866 accepted as Albinaria caerulea kreglingeri (L. Pfeiffer, 1866)
- Species Clausilia krueperi L. Pfeiffer, 1866 accepted as Albinaria krueperi (L. Pfeiffer, 1866)
- Species Clausilia kuesteri Rossmässler, 1836 accepted as Cochlodina kuesteri (Rossmässler, 1836)
- Species Clausilia kurozuensis Pilsbry, 1902 accepted as Megalophaedusa kurozuensis (Pilsbry, 1902)
- Species Clausilia kutschigii L. Pfeiffer, 1848 accepted as Delima pellucida (L. Pfeiffer, 1848)
- Species Clausilia kutschigii Küster, 1847 accepted as Medora contracta contracta (Rossmässler, 1842)
- Species Clausilia kyusyuensis Kuroda, 1945 accepted as Paganizaptyx stimpsoni subgibbera (O. Boettger, 1877)
- Species Clausilia labiata G. B. Sowerby II, 1877
- Species Clausilia labiocrassa L. Pfeiffer, 1848 accepted as Delima bilabiata (J. A. Wagner, 1829)
- Species Clausilia labrosa Heude, 1887 accepted as Oospira (Paraformosana) indurata (Heude, 1887)
- Species Clausilia labyrinthoides Sykes, 1898 accepted as Hemiphaedusa (Labyrinthiphaedusa) labyrinthoides (Sykes, 1898)
- Species Clausilia labyrinthus Anton, 1838
- Species Clausilia lactea Rossmässler, 1839 accepted as Albinaria contaminata (Rossmässler, 1835)
- Species Clausilia laevicollis Charpentier, 1852 accepted as Armenica laevicollis (De Charpentier, 1852)
- Species Clausilia laevigata L. Pfeiffer, 1842 accepted as Montenegrina cattaroensis cattaroensis (Rossmässler, 1835)
- Species Clausilia laevissima Rossmässler, 1833 accepted as Delima laevissima (Rossmässler, 1833)
- Species Clausilia lamellata Rossmässler, 1836 accepted as Stigmatica lamellata (Rossmässler, 1836)
- Species Clausilia lamellosa J. A. Wagner, 1829 accepted as Agathylla lamellosa (J. A. Wagner, 1829)
- Species Clausilia laminata (Montagu, 1803) accepted as Cochlodina laminata (Montagu, 1803)
- Species Clausilia lamothei Ancey, 1906
- Species Clausilia lanceolata Benoit, 1882 accepted as Papillifera papillaris tinei (Westerlund, 1878)
- Species Clausilia lantenoisi Dautzenberg & H. Fischer, 1906 accepted as Selenophaedusa lantenoisi (Dautzenberg & H. Fischer, 1906)
- Species Clausilia lanzai Dunker, 1857 accepted as Medora armata (Küster, 1844)
- Species Clausilia largillierti R. A. Philippi, 1847
- Species Clausilia lartetii Dupuy, 1850 † accepted as Triptychia lartetii (Dupuy, 1850) †
- Species Clausilia latens L. Pfeiffer, 1853 accepted as Alopia glauca (E. A. Bielz, 1853)
- Species Clausilia laterradii Grateloup, 1840 accepted as Strophina laterradii (Grateloup, 1840)
- Species Clausilia latestriata A. Schmidt, 1856 accepted as Macrogastra borealis bielzi H. Nordsieck, 1993
- Species Clausilia latilabris J. A. Wagner, 1829 accepted as Delima latilabris (J. A. Wagner, 1829)
- Species Clausilia latilunellaris O. Boettger & Schmacker, 1894 accepted as Euphaedusa latilunellaris (O. Boettger & Schmacker, 1894)
- Species Clausilia laurentiana Möllendorff, 1885 accepted as Excussispira laurentiana (Möllendorff, 1885)
- Species Clausilia lavillei Dautzenberg & H. Fischer, 1906 accepted as Selenophaedusa lavillei (Dautzenberg & H. Fischer, 1906)
- Species Clausilia laxa Küster, 1860 accepted as Montenegrina laxa laxa (Küster, 1860)
- Species Clausilia lederi O. Boettger, 1878 accepted as Quadriplicata lederi (O. Boettger, 1878)
- Species Clausilia lemani Gude, 1914 accepted as Phaedusa lemani (Gude, 1914)
- Species Clausilia lemyrei Bavay & Dautzenberg, 1899 accepted as Hemiphaedusa (Dendrophaedusa) lemyrei (Bavay & Dautzenberg, 1899)
- Species Clausilia lepidospira Heude, 1889 accepted as Oospira (Paraformosana) lepidospira (Heude, 1889)
- Species Clausilia leprevieri Pallary, 1929 accepted as Cristataria leprevieri (Pallary, 1929)
- Species Clausilia lesinacensis L. Pfeiffer, 1841 accepted as Montenegrina cattaroensis cattaroensis (Rossmässler, 1835)
- Species Clausilia lesinensis Küster, 1847 accepted as Medora lesinensis (Küster, 1847)
- Species Clausilia lessonae Issel, 1865 accepted as Euxina lessonae (Issel, 1865)
- Species Clausilia leucophryna L. Pfeiffer, 1862 accepted as Siciliaria leucophryna (L. Pfeiffer, 1862)
- Species Clausilia leucorhaphe O. Boettger, 1878 accepted as Carinigera leucorhaphe (O. Boettger, 1878)
- Species Clausilia leucospira Heude, 1882 accepted as Euphaedusa (Euphaedusa) aculus (W. H. Benson, 1842)
- Species Clausilia leucostemma Küster, 1861 accepted as Delima bilabiata alschingeri (Charpentier, 1852)
- Species Clausilia leucostigma Rossmässler, 1836 accepted as Leucostigma candidescens leucostigma (Rossmässler, 1836)
- Species Clausilia leucostoma Küster, 1850 accepted as Delima vidovichii leucostoma (Küster, 1850)
- Species Clausilia lewisi Ancey, 1887
- Species Clausilia liebetruti Charpentier, 1852 accepted as Albinaria contaminata liebetruti (Charpentier, 1852)
- Species Clausilia ligurica Pini, 1885
- Species Clausilia limbata F. Sandberger, 1875 † accepted as Triptychia limbata (F. Sandberger, 1875) †
- Species Clausilia lindholmi Lindholm, 1912 accepted as Inobseratella lindholmi (Lindholm, 1912)
- Species Clausilia lineolata Held, 1836 accepted as Macrogastra attenuata lineolata (Held, 1836)
- Species Clausilia lischkeana Charpentier, 1852 accepted as Alopia lischkeana (Charpentier, 1852)
- Species Clausilia litotes A. Schmidt, 1868 accepted as Mentissoidea rupicola litotes (A. Schmidt, 1868)
- Species Clausilia livens E. A. Bielz, 1853 accepted as Alopia lischkeana livens (E. A. Bielz, 1853)
- Species Clausilia livida Menke, 1828 accepted as Alopia livida (Menke, 1828)
- Species Clausilia llavorsiana Fagot, 1884
- Species Clausilia loczyi O. Boettger, 1884 accepted as Euphaedusa (Euphaedusa) loczyi (O. Boettger, 1884)
- Species Clausilia loloensis Heude, 1890 accepted as Bathyptychia (Brachyptychia) breviplica (Möllendorff, 1886)
- Species Clausilia longicollis Küster, 1876 accepted as Delima blanda conspurcata (Rossmässler, 1836)
- Species Clausilia longiplicata Pilsbry, 1908 accepted as Zaptyx (Pulchraptyx) longiplicata (Pilsbry, 1908)
- Species Clausilia longispina Heude, 1885 accepted as Oospira longispina (Heude, 1885)
- Species Clausilia longurio O. Boettger & Schmacker, 1894 accepted as Euphaedusa longurio (O. Boettger & Schmacker, 1894)
- Species Clausilia lopadusae Calcara, 1846 accepted as Lampedusa lopadusae (Calcara, 1846)
- Species Clausilia lopedusae L. Pfeiffer, 1848 accepted as Clausilia lopadusae Calcara, 1846
- Species Clausilia lorraini Menke, 1857 accepted as Papilliphaedusa lorraini (Menke, 1857)
- Species Clausilia loryi Michaud, 1862 † accepted as Macrogastra loryi (Michaud, 1862) †
- Species Clausilia lowei Albers, 1852 accepted as Boettgeria lowei (Albers, 1852)
- Species Clausilia loxostoma W. H. Benson, 1836 accepted as Oospira (Oospira) loxostoma (W. H. Benson, 1836)
- Species Clausilia lucida Menke, 1830
- Species Clausilia lunatica Heude, 1888 accepted as Excussispira lunatica (Heude, 1888)
- Species Clausilia lunellaris L. Pfeiffer, 1849 accepted as Isabellaria saxicola lunellaris (L. Pfeiffer, 1849)
- Species Clausilia lypra Mabille, 1887 accepted as Phaedusa lypra (Mabille, 1887)
- Species Clausilia macarana Rossmässler, 1833 accepted as Medora macascarensis (G. B. Sowerby I, 1828)
- Species Clausilia macascarensis G. B. Sowerby I, 1828 accepted as Medora macascarensis (G. B. Sowerby I, 1828)
- Species Clausilia macedonica Rossmässler, 1839 accepted as Macedonica macedonica (Rossmässler, 1839)
- Species Clausilia macilenta Rossmässler, 1842 accepted as Laciniaria macilenta (Rossmässler, 1842)
- Species Clausilia macluriana Risso, 1826 accepted as Papillifera solida (Draparnaud, 1805)
- Species Clausilia macrosoma Cantraine, 1835 accepted as Muticaria macrostoma (Cantraine, 1835)
- Species Clausilia macrostoma Küster, 1854 accepted as Delima semirugata blaui (Möllendorff, 1873)
- Species Clausilia macrostoma Cantraine, 1835 accepted as Muticaria macrostoma (Cantraine, 1835)
- Species Clausilia maculata Rossmässler, 1836 accepted as Albinaria caerulea maculata (Rossmässler, 1836)
- Species Clausilia maculosa Deshayes, 1835 accepted as Albinaria maculosa (Deshayes, 1835)
- Species Clausilia madensis C. Fuss, 1855 accepted as Alopia bielzii madensis (C. Fuss, 1855)
- Species Clausilia maesta O. Boettger, 1877 accepted as Elia moesta (Rossmässler, 1839)
- Species Clausilia magalhaesi Trindade, 1953 † accepted as Temesa magalhaesi (Trindade, 1953) †
- Species Clausilia magistra G. B. Sowerby III, 1892 accepted as Neniops magistra (G. B. Sowerby III, 1892)
- Species Clausilia magnaciana Heude, 1882 accepted as Formosana magnaciana (Heude, 1882)
- Species Clausilia magnacianella Heude, 1882 accepted as Oospira (Formosanella) bensoni (H. Adams, 1870)
- Species Clausilia magnifica L. Pfeiffer, 1859 accepted as Triloba sandrii (Küster, 1844)
- Species Clausilia magnilabris Zelebor, 1868 accepted as Herilla bosniensis bosniensis (v. Vest, 1867)
- Species Clausilia magniventris Küster, 1853 accepted as Delima bilabiata alschingeri (Charpentier, 1852)
- Species Clausilia mairei Bavay & Dautzenberg, 1909 accepted as Oospira mairei (Bavay & Dautzenberg, 1909)
- Species Clausilia makassarensis Sykes, 1897 accepted as Paraphaedusa makassarensis (Sykes, 1897)
- Species Clausilia malleolata R. A. Philippi, 1867 accepted as Steeriana malleolata (R. A. Philippi, 1867)
- Species Clausilia mamertina Benoit, 1843 accepted as Papillifera papillaris affinis (R. A. Philippi, 1836)
- Species Clausilia manca Wenz, 1919 † accepted as Canalicia manca (Wenz, 1919) †
- Species Clausilia manselli O. Boettger, 1883 accepted as Albinaria teres manselli (O. Boettger, 1883)
- Species Clausilia mansuyi Dautzenberg & H. Fischer, 1908 accepted as Dautzenbergiella mansuyi (Dautzenberg & H. Fischer, 1908)
- Species Clausilia maranhonensis Albers, 1854 accepted as Cylindronenia maranhonensis (Albers, 1854)
- Species Clausilia marcelia Risso, 1826
- Species Clausilia marchesettii Stossich, 1883 accepted as Dilataria succineata mathildae (Westerlund, 1878)
- Species Clausilia marcki L. Pfeiffer, 1868 accepted as Dilataria marcki (L. Pfeiffer, 1868)
- Species Clausilia margaritacea Heude, 1887 accepted as Synprosphyma (Synprosphyma) franciscana (Möllendorff, 1885)
- Species Clausilia margaritifera Bavay & Dautzenberg, 1909 accepted as Margaritiphaedusa margaritifera (Bavay & Dautzenberg, 1909)
- Species Clausilia marginata Rossmässler, 1835 accepted as Macedonica marginata marginata (Rossmässler, 1835)
- Species Clausilia marginata Held, 1836 accepted as Cochlodina orthostoma (Menke, 1828)
- Species Clausilia marisi A. Schmidt, 1868 accepted as Cochlodina marisi (A. Schmidt, 1868)
- Species Clausilia maritima Küster, 1876 accepted as Charpentieria (Stigmatica) stigmatica stigmatica (Rossmässler, 1836)
- Species Clausilia marteli Dautzenberg, 1915 accepted as Serriphaedusa marteli (Dautzenberg, 1915)
- Species Clausilia martensi E. von Martens, 1861 accepted as Megalophaedusa martensi (E. von Martens, 1861)
- Species Clausilia masoni Theobald, 1864 accepted as Indonenia masoni (Theobald, 1864)
- Species Clausilia mastodontofila Sismonda, 1852 † accepted as Triptychia mastodontofila (Sismonda, 1852) †
- Species Clausilia mathildae Westerlund, 1878 accepted as Dilataria succineata mathildae (Westerlund, 1878)
- Species Clausilia maxima Grateloup, 1828 † accepted as Triptychia maxima (Grateloup, 1828) †
- Species Clausilia medlycotti Tristram, 1865 accepted as Cristataria strangulata medlycotti (Tristram, 1865)
- Species Clausilia meisneriana Shuttleworth, 1843 accepted as Cochlodina meisneriana (Shuttleworth, 1843)
- Species Clausilia melvilli Sykes, 1893 accepted as Oospira salacana melvilli (Sykes, 1893)
- Species Clausilia menelaus E. von Martens, 1873 accepted as Albinaria menelaus (E. von Martens, 1873)
- Species Clausilia meroniana Heude, 1888 accepted as Euphaedusa meroniana (Heude, 1888)
- Species Clausilia meschendorferi E. A. Bielz, 1858 accepted as Alopia meschendorferi (E. A. Bielz, 1858)
- Species Clausilia messenica E. von Martens, 1876 accepted as Albinaria nivea messenica (E. von Martens, 1876)
- Species Clausilia metria Mabille, 1889
- Species Clausilia michahellis Küster, 1850 accepted as Delima latilabris michahellis (Küster, 1850)
- Species Clausilia michaudiana L. Pfeiffer, 1848 accepted as Alinda biplicata michaudiana (L. Pfeiffer, 1848)
- Species Clausilia michelottii Michaud, 1862 † accepted as Serrulella michelottii (Michaud, 1862) †
- Species Clausilia micropeas Möllendorff, 1882 accepted as Megalophaedusa micropeas (Möllendorff, 1882)
- Species Clausilia microstoma Küster, 1844
- Species Clausilia mikado Pilsbry, 1900 accepted as Megalophaedusa mikado (Pilsbry, 1900)
- Species Clausilia mikawa Pilsbry, 1905 accepted as Stereophaedusa mikawa (Pilsbry, 1905)
- Species Clausilia milleri L. Pfeiffer, 1850 accepted as Albinaria caerulea milleri (L. Pfeiffer, 1850)
- Species Clausilia minahassae P. Sarasin & F. Sarasin, 1899 accepted as Paraphaedusa minahassae (P. Sarasin & F. Sarasin, 1899)
- Species Clausilia minima C. Pfeiffer, 1821
- Species Clausilia minor Pirona, 1865 accepted as Charpentieria itala zalloti De Mattia, Reier & Haring, 2021
- Species Clausilia minuscula Küster, 1876 accepted as Delima montenegrina (L. Pfeiffer, 1848)
- Species Clausilia mirabilis A. Schmidt, 1868 accepted as Dobatia goettingi (R. A. Brandt, 1961)
- Species Clausilia mitylena Albers, 1857 accepted as Albinaria cretensis (Rossmässler, 1836)
- Species Clausilia modesta Rossmässler, 1836 accepted as Albinaria senilis (Rossmässler, 1836)
- Species Clausilia moellendorffi E. von Martens, 1874 accepted as Euphaedusa aculus moellendorffi (E. von Martens, 1874)
- Species Clausilia moellendorffiana Heude, 1882 accepted as Hemiphaedusa (Hemiphaedusoides) moellendorffiana (Heude, 1882)
- Species Clausilia moesta Rossmässler, 1839 accepted as Elia moesta (Rossmässler, 1839)
- Species Clausilia mofellana A. Schmidt, 1868 accepted as Papillifera solida caietana (Rossmässler, 1842)
- Species Clausilia moirati Bavay & Dautzenberg, 1909 accepted as Hemiphaedusa moirati (Bavay & Dautzenberg, 1909)
- Species Clausilia molonis De Gregorio, 1880 †
- Species Clausilia moluccensis E. von Martens, 1864 accepted as Phaedusa moluccensis (E. von Martens, 1864)
- Species Clausilia monelasmus Pilsbry, 1900 accepted as Reinia monelasmus (Pilsbry, 1909)
- Species Clausilia monilifera L. Pfeiffer, 1866 accepted as Papillifera papillaris papillaris (O. F. Müller, 1774)
- Species Clausilia moniziana R. T. Lowe, 1852 accepted as Clausilia bidentata moniziana R. T. Lowe, 1852
- Species Clausilia montana L. Pfeiffer, 1847 accepted as Alinda viridana (Rossmässler, 1836)
- Species Clausilia montenegrina L. Pfeiffer, 1848 accepted as Delima montenegrina (L. Pfeiffer, 1848)
- Species Clausilia moritzii Mousson, 1849 accepted as Oospira cornea (Philippi, 1846)
- Species Clausilia moschina Gredler, 1888 accepted as Formosana moschina (Gredler, 1888)
- Species Clausilia mouhoti L. Pfeiffer, 1863 accepted as Garnieria mouhoti (L. Pfeiffer, 1863)
- Species Clausilia mucida Rossmässler, 1835 accepted as Macrogastra badia mucida (Rossmässler, 1835)
- Species Clausilia multidentata Rossmässler, 1839 accepted as Bulgarica denticulata (Olivier, 1801)
- Species Clausilia multilamellata Mousson, 1856 accepted as Clausilia semilamellata Mousson, 1863
- Species Clausilia munda Rossmässler, 1836 accepted as Albinaria munda (Rossmässler, 1836)
- Species Clausilia munus Pilsbry, 1901 accepted as Zaptyx munus (Pilsbry, 1901)
- Species Clausilia muralis Küster, 1860 accepted as Delima montenegrina muralis (Küster, 1860)
- Species Clausilia muraria A. Schmidt, 1868 accepted as Albinaria contaminata muraria (A. Schmidt, 1868)
- Species Clausilia nagashimana Pilsbry, 1905 accepted as Stereophaedusa viridiflava nagashimana (Pilsbry, 1905)
- Species Clausilia nakadae Pilsbry, 1909 accepted as Reinia nakadai (Pilsbry, 1902)
- Species Clausilia nakadai Pilsbry, 1902 accepted as Reinia nakadai (Pilsbry, 1902)
- Species Clausilia nana L. Pfeiffer, 1842 accepted as Macrogastra badia mucida (Rossmässler, 1835)
- Species Clausilia nana Küster, 1857 accepted as Clausilia rugosa reboudii Dupuy, 1851
- Species Clausilia nankingensis Heude, 1882 accepted as Euphaedusa (Euphaedusa) aculus nankingensis (Heude, 1882)
- Species Clausilia narentana A. Schmidt, 1868 accepted as Agathylla narentana (A. Schmidt, 1868)
- Species Clausilia nectarina L. Pfeiffer, 1848 accepted as Euxina circumdata (L. Pfeiffer, 1848)
- Species Clausilia negropontina L. Pfeiffer, 1850 accepted as Isabellaria saxicola negropontina (L. Pfeiffer, 1849)
- Species Clausilia neniopsis Pilsbry, 1902 accepted as Stereophaedusa neniopsis (Pilsbry, 1902)
- Species Clausilia nervosa A. Schmidt, 1868 accepted as Cristataria albersi (Bourguignat, 1852)
- Species Clausilia neumeyeri Küster, 1847 accepted as Charpentieria (Stigmatica) paestana paestana (R. A. Philippi, 1836)
- Species Clausilia nevilliana Möllendorff, 1882 accepted as Oospira nevilliana (Möllendorff, 1882)
- Species Clausilia nigricans Maton & Rackett, 1807 accepted as Clausilia bidentata (Strøm, 1765)
- Species Clausilia nishinoshimana Pilsbry, 1909 accepted as Stereophaedusa nishinoshimana (Pilsbry, 1909)
- Species Clausilia nitida L. Pfeiffer, 1848 accepted as Delima semirugata (Rossmässler, 1836)
- Species Clausilia nitidescens L. Pfeiffer, 1842 accepted as Delima latilabris (J. A. Wagner, 1829)
- Species Clausilia nitidula L. Pfeiffer, 1848 accepted as Delima semirugata (Rossmässler, 1836)
- Species Clausilia nivea L. Pfeiffer, 1855 accepted as Albinaria nivea (L. Pfeiffer, 1855)
- Species Clausilia nobilis L. Pfeiffer, 1848 accepted as Sicania nobilis (L. Pfeiffer, 1848)
- Species Clausilia nodulifera E. von Martens, 1877 accepted as Stereophaedusa (Mesophaedusa) japonica (Crosse, 1871)
- Species Clausilia nolani Pilsbry, 1900
- Species Clausilia nomichosi A. Letourneux, 1884
- Species Clausilia notabilis Küster, 1876 accepted as Delima latilabris opaca (Charpentier, 1852)
- Species Clausilia novigentiensis Deshayes, 1863 †
- Species Clausilia numidica A. Letourneux, 1870
- Species Clausilia nympha Schmidt, 1868 accepted as Dilataria marcki (L. Pfeiffer, 1868)
- Species Clausilia obesa L. Pfeiffer, 1861 accepted as Delima semirugata obesa (L. Pfeiffer, 1861)
- Species Clausilia obesa E. von Martens, 1867 accepted as Oospira obesa (E. von Martens, 1867)
- Species Clausilia obesiuscula R. T. Lowe, 1863 accepted as Boettgeria obesiuscula (R. T. Lowe, 1863)
- Species Clausilia oblita G. B. Sowerby II, 1877
- Species Clausilia obliterata Hsü, 1936 † accepted as Zaptyx heudeana (Möllendorff, 1882)
- Species Clausilia oblonga Anton, 1838
- Species Clausilia obscura A. Schmidt, 1868 accepted as Alinda fallax (Rossmässler, 1836)
- Species Clausilia obtusa C. Pfeiffer, 1821
- Species Clausilia ochracea Küster, 1857 accepted as Bulgarica rugicollis rugicollis (Rossmässler, 1836)
- Species Clausilia odontochila Schmacker & O. Boettger, 1891 accepted as Taiwanphaedusa odontochila (Schmacker & O. Boettger, 1891)
- Species Clausilia oertzeni O. Boettger, 1889 accepted as Albinaria olivieri oertzeni (O. Boettger, 1889)
- Species Clausilia okinoerabuensis Pilsbry, 1905 accepted as Stereophaedusa bernardii okinoerabuensis (Pilsbry, 1905)
- Species Clausilia oleata Rossmässler, 1842 accepted as Bulgarica rugicollis carissima (Rossmässler, 1839)
- Species Clausilia oligocaenica K. Miller, 1907 † accepted as Triptychia oligocaenica (K. Miller, 1907) †
- Species Clausilia olivacea Cantraine, 1835
- Species Clausilia olivieri J. R. Roth, 1839 accepted as Albinaria olivieri olivieri (J. R. Roth, 1839)
- Species Clausilia olympica L. Pfeiffer, 1848 accepted as Olympicola olympica (L. Pfeiffer, 1848)
- Species Clausilia ominosa Rossmässler, 1835 accepted as Leucostigma candidescens (Rossmässler, 1835)
- Species Clausilia oostoma Möllendorff, 1882 accepted as Stereophaedusa oostoma (Möllendorff, 1882)
- Species Clausilia opaca Charpentier, 1852 accepted as Delima latilabris opaca (Charpentier, 1852)
- Species Clausilia opalina Rossmässler, 1836 accepted as Leucostigma candidescens opalinum (Rossmässler, 1836)
- Species Clausilia ophidoon Pilsbry, 1905 accepted as Stereophaedusa ophidoon (Pilsbry, 1905)
- Species Clausilia ophthalmophana Mabille, 1887 accepted as Selenophaedusa ophthalmophana (Mabille, 1887)
- Species Clausilia orientalis L. Pfeiffer, 1842 accepted as Oospira orientalis (L. Pfeiffer, 1842)
- Species Clausilia orites Laidlaw, 1931 accepted as Oospira penangensis orites (Laidlaw, 1931)
- Species Clausilia ornata Rossmässler, 1836 accepted as Charpentieria ornata (Rossmässler, 1836)
- Species Clausilia orphanuli Heude, 1882 accepted as Euphaedusa aculus orphanuli (Heude, 1882)
- Species Clausilia orsiniana A. Schmidt, 1868 accepted as Medora punctulata punctulata (Küster, 1850)
- Species Clausilia orthatracta Pilsbry, 1902 accepted as Megalophaedusa iotaptyx (Pilsbry, 1900)
- Species Clausilia orthostoma Menke, 1828 accepted as Cochlodina orthostoma orthostoma (Menke, 1828)
- Species Clausilia oscariana Pilsbry, 1901 accepted as Megalophaedusa pilsbryana (Ancey, 1904)
- Species Clausilia oscariana Gredler, 1892
- Species Clausilia oscitans Charpentier, 1852 accepted as Muticaria macrostoma oscitans (Charpentier, 1852)
- Species Clausilia osculans E. von Martens, 1876 accepted as Isabellaria isabellina osculans (E. von Martens, 1876)
- Species Clausilia ossetica A. Schmidt, 1868 accepted as Elia derasa (Mousson, 1863)
- Species Clausilia ovata Anton, 1838
- Species Clausilia oxycyma Pilsbry, 1902 accepted as Megalophaedusa oxycyma (Pilsbry, 1902)
- Species Clausilia oxystoma Rossmässler, 1839 accepted as Idyla bicristata (Rossmässler, 1839)
- Species Clausilia pachygastris Rossmässler, 1835 accepted as Delima laevissima pachygastris (Rossmässler, 1835)
- Species Clausilia pachyodon Heude, 1884 accepted as Clausilia heudeana Möllendorff, 1882
- Species Clausilia pachyspira Pilsbry, 1902 accepted as Megalophaedusa pachyspira (Pilsbry, 1902)
- Species Clausilia pachystoma L. Pfeiffer, 1848 accepted as Delima pachystoma (L. Pfeiffer, 1848)
- Species Clausilia pachystoma Heude, 1882 accepted as Clausilia heudeana Möllendorff, 1882
- Species Clausilia pacifica Gredler, 1884 accepted as Formosana pacifica (Gredler, 1884)
- Species Clausilia paestana R. A. Philippi, 1836 accepted as Stigmatica paestana (R. A. Philippi, 1836)
- Species Clausilia pagana Rossmässler, 1842 accepted as Bulgarica rugicollis pagana (Rossmässler, 1842)
- Species Clausilia pagnucciana Heude, 1888 accepted as Euphaedusa loczyi pagnucciana (Heude, 1888)
- Species Clausilia pahangensis Laidlaw, 1929 accepted as Phaedusa pahangensis (Laidlaw, 1929)
- Species Clausilia pallidescens A. Schmidt, 1868 accepted as Lampedusa lopadusae lopadusae (Calcara, 1846)
- Species Clausilia pancici L. Pfeiffer, 1856 accepted as Bulgarica vetusta pancici (L. Pfeiffer, 1856)
- Species Clausilia papillaris (O. F. Müller, 1774) accepted as Papillifera papillaris (O. F. Müller, 1774)
- Species Clausilia papillina Gredler, 1890 accepted as Clausilia lepidospira Heude, 1889
- Species Clausilia parreyssii L. Pfeiffer, 1848 accepted as Agardhiella parreyssii (L. Pfeiffer, 1848)
- Species Clausilia parthenia Küster, 1876 accepted as Delima blanda (Rossmässler, 1836)
- Species Clausilia pattalus Pilsbry, 1905 accepted as Zaptyx pattalus (Pilsbry, 1905)
- Species Clausilia patula Küster, 1851 accepted as Isabellaria saxicola suturalis (Küster, 1861)
- Species Clausilia patula (Matheron, 1832) † accepted as Proalbinaria undulata (Matheron, 1832) †
- Species Clausilia pauli Mabille, 1865 accepted as Neniatlanta pauli (Mabille, 1865)
- Species Clausilia paulucciana G. Nevill, 1880 † accepted as Ruthenica filograna (Rossmässler, 1836)
- Species Clausilia paviei Morlet, 1893 accepted as Phaedusa paviei (Morlet, 1893)
- Species Clausilia pellucida L. Pfeiffer, 1848 accepted as Delima pellucida (L. Pfeiffer, 1848)
- Species Clausilia perarata E. von Martens, 1873 accepted as Paranenia perarata (E. von Martens, 1873)
- Species Clausilia peregrina Reuss, 1849 †
- Species Clausilia perinni Bourguignat, 1876 accepted as Mauritanica perinni (Bourguignat, 1876)
- Species Clausilia perlucens O. Boettger, 1877 accepted as Caspiophaedusa perlucens (O. Boettger, 1877)
- Species Clausilia perpallida Pilsbry, 1900 accepted as Megalophaedusa (Vitriphaedusa) micropeas (Möllendorff, 1882)
- Species Clausilia perplana O. Boettger, 1877 accepted as Isabellaria perplana (O. Boettger, 1877)
- Species Clausilia perplexa Sykes, 1893
- Species Clausilia persica O. Boettger, 1879 accepted as Euxina persica (O. Boettger, 1879)
- Species Clausilia peruana Troschel, 1847 accepted as Peruinia peruana (Troschel, 1847)
- Species Clausilia petrosa L. Pfeiffer, 1849 accepted as Albinaria petrosa (L. Pfeiffer, 1849)
- Species Clausilia pfeifferi L. Pfeiffer, 1848 accepted as Fusulus interruptus (C. Pfeiffer, 1828)
- Species Clausilia pfeifferi Küster, 1850 accepted as Delima pfeifferi (Küster, 1850)
- Species Clausilia phaeniciaca Bourguignat, 1868 accepted as Cristataria albersi (Bourguignat, 1852)
- Species Clausilia philippiana L. Pfeiffer, 1847 accepted as Oospira (Oospira) philippiana (L. Pfeiffer, 1847)
- Species Clausilia philora A. Letourneux, 1887 accepted as Mauritanica philora (A. Letourneux, 1887)
- Species Clausilia phyllostoma Heude, 1888 accepted as Oospira phyllostoma (Heude, 1888)
- Species Clausilia physoides K. Miller, 1907 † accepted as Neniopsis physoides (K. Miller, 1907) †
- Species Clausilia piceata Rossmässler, 1836 accepted as Charpentieria piceata (Rossmässler, 1836)
- Species Clausilia picta L. Pfeiffer, 1849
- Species Clausilia pigra Pilsbry, 1902 accepted as Megalophaedusa (Pinguiphaedusa) pigra (Pilsbry, 1902)
- Species Clausilia pikermiana J. R. Roth, 1855 accepted as Idyla bicristata pikermiana J. R. Roth, 1855
- Species Clausilia pilsbryana Ancey, 1904 accepted as Megalophaedusa pilsbryana (Ancey, 1904)
- Species Clausilia pilsbryi Sykes, 1901 accepted as Incania pilsbryi (Sykes, 1901)
- Species Clausilia pinto Pilsbry, 1901 accepted as Zaptyx pinto (Pilsbry, 1901)
- Species Clausilia pirostoma O. Boettger, 1877 accepted as Dilataria pirostoma (O. Boettger, 1877)
- Species Clausilia plagioptyx Pilsbry, 1902 accepted as Stereophaedusa addisoni plagioptyx (Pilsbry, 1902)
- Species Clausilia planata A. Schmidt, 1868 accepted as Delima semirugata obesa (L. Pfeiffer, 1861)
- Species Clausilia planilabris Rossmässler, 1839 accepted as Delima bilabiata (J. A. Wagner, 1829)
- Species Clausilia planostriata Heude, 1882 accepted as Euphaedusa (Euphaedusa) planostriata (Heude, 1882)
- Species Clausilia platyauchen E. von Martens, 1877 accepted as Megalophaedusa (Pinguiphaedusa) pinguis platyauchen (E. von Martens, 1877)
- Species Clausilia platydera G. B. Sowerby II, 1875
- Species Clausilia platydera E. von Martens, 1876 accepted as Megalophaedusa pinguis platydera (E. von Martens, 1876)
- Species Clausilia platyderula Pilsbry, 1903 accepted as Megalophaedusa platyderula (Pilsbry, 1903)
- Species Clausilia platystoma Küster, 1850 accepted as Strigilodelima conspersa conspersa (L. Pfeiffer, 1848)
- Species Clausilia pleuroptychia O. Boettger, 1878 accepted as Mucronaria pleuroptychia (O. Boettger, 1878)
- Species Clausilia plicata (Draparnaud, 1801) accepted as Laciniaria plicata (Draparnaud, 1801)
- Species Clausilia plicatula (Draparnaud, 1801) accepted as Macrogastra plicatula (Draparnaud, 1801)
- Species Clausilia pliocena S. V. Wood, 1874 †
- Species Clausilia pliodiptyx H. Nordsieck, 1972 † accepted as Pliodiptychia pliodiptyx (H. Nordsieck, 1972) †
- Species Clausilia plumbea Rossmässler, 1839 accepted as Alopia plumbea (Rossmässler, 1839)
- Species Clausilia pluviatilis W. H. Benson, 1842 accepted as Hemiphaedusa pluviatilis (W. H. Benson, 1842)
- Species Clausilia polita Risso, 1826 accepted as Granaria variabilis (Draparnaud, 1801)
- Species Clausilia polita A. Schmidt, 1868 accepted as Cochlodina liburnica (A. J. Wagner, 1919)
- Species Clausilia polydona Mabille, 1887 accepted as Notoptychia polydona (Mabille, 1887)
- Species Clausilia polygyra O. Boettger, 1879 accepted as Mauritanica perinni polygyra (O. Boettger, 1879)
- Species Clausilia polyodon Reuss, 1861 † accepted as Serrulastra (Serrustigma) polyodon (Reuss, 1861) †
- Species Clausilia pomatias L. Pfeiffer, 1868 accepted as Alopia pomatias (L. Pfeiffer, 1868)
- Species Clausilia porphyrostoma Bavay & Dautzenberg, 1909 accepted as Selenophaedusa porphyrostoma (Bavay & Dautzenberg, 1909)
- Species Clausilia porrecta Rossmässler, 1857 accepted as Cristataria porrecta (Rossmässler, 1857)
- Species Clausilia portensis A. L. Silva, 1872 accepted as Macrogastra rolphii portensis (A. L. Silva, 1872)
- Species Clausilia portisii Sacco, 1886 †
- Species Clausilia potanini (Möllendorff, 1901) accepted as Phaedusa potanini Möllendorff, 1901
- Species Clausilia praeclara L. Pfeiffer, 1853 accepted as Albinaria praeclara (L. Pfeiffer, 1853)
- Species Clausilia praeclara A. Gould, 1859 accepted as Stereophaedusa (Luchuphaedusa) bernardii (L. Pfeiffer, 1861)
- Species Clausilia praegracilis O. Boettger, 1879 accepted as Cristataria genezarethana (Tristram, 1865)
- Species Clausilia presbyteralis Gredler, 1892 accepted as Euphaedusa presbyteralis (Gredler, 1892)
- Species Clausilia presckarii L. Pfeiffer, 1866 accepted as Delima montenegrina semilabiata (Walderdorff, 1864)
- Species Clausilia principalis Gredler, 1881 accepted as Margaritiphaedusa principalis (Gredler, 1881)
- Species Clausilia privigna O. Boettger, 1883 accepted as Albinaria privigna (O. Boettger, 1883)
- Species Clausilia proboscidea Küster, 1844
- Species Clausilia procera E. A. Bielz, 1853 accepted as Vestia turgida procera (E. A. Bielz, 1853)
- Species Clausilia proctostoma Mabille, 1889 accepted as Tropidauchenia proctostoma (Mabille, 1889)
- Species Clausilia produbia H. Nordsieck, 1976 †
- Species Clausilia profuga Charpentier, 1852 accepted as Albinaria profuga (Charpentier, 1852)
- Species Clausilia promta A. Schmidt, 1868 accepted as Euxina promta (A. Schmidt, 1868)
- Species Clausilia prophetarum Bourguignat, 1868 accepted as Cristataria strangulata medlycotti (Tristram, 1865)
- Species Clausilia prostrobeli (H. Nordsieck, 2013) † accepted as Neostyriaca prostrobeli H. Nordsieck, 2013 †
- Species Clausilia provisoria Gredler, 1888 accepted as Bathyptychia (Bathyptychia) provisoria (Gredler, 1888)
- Species Clausilia proxima Walderdorff, 1864 accepted as Medora proxima (Walderdorff, 1864)
- Species Clausilia prunilia A. Schmidt, 1868 accepted as Delima semirugata semirugata (Rossmässler, 1836)
- Species Clausilia pseudauregani Dautzenberg & H. Fischer, 1908 accepted as Liparophaedusa pseudauregani (Dautzenberg & H. Fischer, 1908)
- Species Clausilia pseudobensoni O. Boettger & Boettger, 1894 accepted as Phaedusa (Metaphaedusa) pseudobensoni (O. Boettger & Boettger, 1894)
- Species Clausilia psilodonta Heude, 1889 accepted as Formosana psilodonta (Heude, 1889)
- Species Clausilia ptychochila O. Boettger, 1877 accepted as Stereophaedusa bernardii (L. Pfeiffer, 1861)
- Species Clausilia ptychocyma Pilsbry, 1901 accepted as Zaptyx ptychocyma (Pilsbry, 1901)
- Species Clausilia ptychodon Ancey, 1888
- Species Clausilia puella L. Pfeiffer, 1850 accepted as Albinaria munda puella (L. Pfeiffer, 1850)
- Species Clausilia pulchella L. Pfeiffer, 1848 accepted as Dilataria succineata pulchella (L. Pfeiffer, 1848)
- Species Clausilia pumila (C. Pfeiffer, 1828)
- Species Clausilia punctata Michaud, 1831 accepted as Charpentieria itala punctata (Michaud, 1831)
- Species Clausilia punctatissima R. P. Lesson, 1831 accepted as Bahiensis punctatissimus (R. P. Lesson, 1831)
- Species Clausilia punctulata Küster, 1850 accepted as Medora punctulata (Küster, 1850)
- Species Clausilia pupaeformis A. Schmidt, 1868 accepted as Delima subcylindrica (Rossmässler, 1836)
- Species Clausilia pupoides Spix, 1827 accepted as Cyclodontina inflata (J. A. Wagner, 1827)
- Species Clausilia pura O. Boettger, 1878 accepted as Albinaria eburnea (L. Pfeiffer, 1854)
- Species Clausilia pusilla L. Pfeiffer, 1848 accepted as Clausilia cruciata (S. Studer, 1820)
- Species Clausilia pustulata Küster, 1876 accepted as Delima blanda conspurcata (Rossmässler, 1836)
- Species Clausilia pygmaea Rossmässler, 1836 accepted as Delima bilabiata biasolettiana (Charpentier, 1852)
- Species Clausilia pyrenaica Boubée, 1832 accepted as Abida pyrenaearia (Michaud, 1831)
- Species Clausilia pyrrha Sykes, 1897 accepted as Paraphaedusa pyrrha (Sykes, 1897)
- Species Clausilia quadriplicata A. Schmidt, 1868 accepted as Quadriplicata quadriplicata (A. Schmidt, 1868)
- Species Clausilia rablensis M. von Gallenstein, 1852 accepted as Julica schmidtii (L. Pfeiffer, 1841)
- Species Clausilia raimondii R. A. Philippi, 1867 accepted as Incaglaia raimondii (R. A. Philippi, 1867)
- Species Clausilia randeckiana Kranz, 1908 † accepted as Triptychia randeckiana (Kranz, 1908) †
- Species Clausilia raricosta O. Boettger, 1877 accepted as Dilataria marcki (L. Pfeiffer, 1868)
- Species Clausilia rathouisiana Heude, 1882 accepted as Tauphaedusa tau (O. Boettger, 1877)
- Species Clausilia raymondi Bourguignat, 1863 accepted as Cristataria porrecta (Rossmässler, 1857)
- Species Clausilia reboudii Dupuy, 1851 accepted as Clausilia rugosa reboudii Dupuy, 1851
- Species Clausilia recedens O. Boettger & Schmacker, 1894 accepted as Formosanella recedens (O. Boettger & Schmacker, 1894)
- Species Clausilia recens Gredler, 1894 accepted as Bathyptychia (Brachyptychia) recens (Gredler, 1894)
- Species Clausilia rectaluna Möllendorff, 1882 accepted as Zaptyx buschii (Küster, 1844)
- Species Clausilia reeveana L. Pfeiffer, 1850 accepted as Isabellaria isabellina isabellina (L. Pfeiffer, 1842)
- Species Clausilia reflexa L. Pfeiffer, 1842 accepted as Delima bilabiata (J. A. Wagner, 1829)
- Species Clausilia reflexilabris Cantraine, 1835
- Species Clausilia regalis M. Bielz, 1851 accepted as Alopia regalis (M. Bielz, 1851)
- Species Clausilia regularis L. Pfeiffer, 1861 accepted as Agathylla regularis (L. Pfeiffer, 1861)
- Species Clausilia reiniana Kobelt, 1875
- Species Clausilia rejectilis L. Pfeiffer, 1848 accepted as Agathylla abrupta (Küster, 1847)
- Species Clausilia relicta Westerlund, 1898
- Species Clausilia reshtensis H. E. J. Biggs, 1931 accepted as Euxina lessonae (Issel, 1865)
- Species Clausilia retorta Heude, 1890 accepted as Excussispira retorta (Heude, 1890)
- Species Clausilia rhaetica L. Pfeiffer, 1842 accepted as Charpentieria stenzii cincta (Brumati, 1838)
- Species Clausilia ridicula Gredler, 1882 accepted as Euphaedusa ridicula (Gredler, 1882)
- Species Clausilia robusta Küster, 1847 accepted as Delima vidovichii robusta (Küster, 1847)
- Species Clausilia robustior Bullen, 1906 accepted as Pseudonenia abbreviata (E. von Martens, 1867)
- Species Clausilia rolfbrandti (Schlickum, 1969) †
- Species Clausilia rolphii W. Turton, 1826 accepted as Macrogastra rolphii (W. Turton, 1826)
- Species Clausilia roschitzi (Brancsik, 1890) accepted as Pavlovicia roschitzi (Brancsik, 1890)
- Species Clausilia roscida Studer, 1820 accepted as Clausilia dubia Draparnaud, 1805
- Species Clausilia rossmaessleri L. Pfeiffer, 1841 accepted as Charpentieria stenzii cincta (Brumati, 1838)
- Species Clausilia rostellum Held, 1836 accepted as Macrogastra bergeri (Rossmässler, 1836)
- Species Clausilia rothi L. Pfeiffer, 1856
- Species Clausilia rothschildi H. Neuville & R. Anthony, 1906 accepted as Macroptychia rothschildi (H. Neuville & R. Anthony, 1906)
- Species Clausilia rotundata A. Schmidt, 1868 accepted as Albinaria turrita turrita (L. Pfeiffer, 1850)
- Species Clausilia rouxi Noulet, 1868 † accepted as Triptychia rouxi (Noulet, 1868) †
- Species Clausilia rowlandi Pilsbry, 1902 accepted as Tauphaedusa rowlandi (Pilsbry, 1902)
- Species Clausilia rubicunda Küster, 1851 accepted as Isabellaria saxicola saxicola (L. Pfeiffer, 1848)
- Species Clausilia rubiginea Rossmässler, 1836 accepted as Charpentieria itala rubiginea (Rossmässler, 1836)
- Species Clausilia rubra Benoit, 1882 accepted as Siciliaria grohmanniana rubra (Benoit, 1882)
- Species Clausilia rudicosta O. Boettger, 1878
- Species Clausilia rudis L. Pfeiffer, 1865 accepted as Albinaria praeclara rudis (L. Pfeiffer, 1865)
- Species Clausilia rufospira L. Pfeiffer, 1866 accepted as Albinaria virgo (Mousson, 1854)
- Species Clausilia rugicollis Rossmässler, 1836 accepted as Strigillaria rugicollis (Rossmässler, 1836)
- Species Clausilia rugilabris Mousson, 1859 accepted as Montenegrina rugilabris (Mousson, 1859)
- Species Clausilia rugosa (Draparnaud, 1801)
- Species Clausilia rugulosa Küster, 1853 accepted as Delima blanda fulcrata (Rossmässler, 1836)
- Species Clausilia ruminiformis Mabille, 1887 accepted as Liparophaedusa ruminiformis (Mabille, 1887)
- Species Clausilia rupicola Mortillet, 1853 accepted as Mentissoidea rupicola (Mortillet, 1853)
- Species Clausilia ruptiva Heude, 1889 accepted as Phaedusa coccygea (Gredler, 1888)
- Species Clausilia rusiostoma Held, 1836 accepted as Macrogastra plicatula plicatula (Draparnaud, 1801)
- Species Clausilia rustica Heude, 1889 accepted as Margaritiphaedusa rusticana (H. Nordsieck, 1998)
- Species Clausilia rutila Küster, 1876 accepted as Delima latilabris michahellis (Küster, 1850)
- Species Clausilia sancta Bourguignat, 1868 accepted as Cristataria strangulata sancta (Bourguignat, 1868)
- Species Clausilia sandrii Küster, 1844 accepted as Triloba sandrii (Küster, 1844)
- Species Clausilia sarissa Pilsbry, 1905 accepted as Zaptyx sarissa (Pilsbry, 1905)
- Species Clausilia satura Rossmässler, 1836 accepted as Delima binotata satura (Rossmässler, 1836)
- Species Clausilia saturalis L. Pfeiffer, 1841 accepted as Delima latilabris (J. A. Wagner, 1829)
- Species Clausilia saulcyi Bourguignat, 1853 accepted as Elia moesta moesta (Rossmässler, 1839)
- Species Clausilia saxatilis L. Pfeiffer, 1846 accepted as Albinaria saxatilis (L. Pfeiffer, 1846)
- Species Clausilia saxicola L. Pfeiffer, 1848 accepted as Isabellaria saxicola (L. Pfeiffer, 1848)
- Species Clausilia scalaris L. Pfeiffer, 1850 accepted as Muticaria macrostoma scalaris (L. Pfeiffer, 1850)
- Species Clausilia scarificata L. Pfeiffer, 1856 accepted as Benoitiella scarificata (L. Pfeiffer, 1856)
- Species Clausilia schlueteri O. Boettger, 1879 accepted as Juttingia schlueteri (O. Boettger, 1879)
- Species Clausilia schmidtii L. Pfeiffer, 1841 accepted as Macrogastra schmidtii (L. Pfeiffer, 1841)
- Species Clausilia scholastica Heude, 1889
- Species Clausilia schuchii Rossmässler, 1836 accepted as Albinaria maculosa (Deshayes, 1835)
- Species Clausilia schwaneri E. von Martens, 1867 accepted as Paraphaedusa schwaneri (E. Martens, 1867)
- Species Clausilia schweinfurthi E. von Martens, 1889 accepted as Sabaeola schweinfurthi (E. von Martens, 1889)
- Species Clausilia schwerzenbachii L. Pfeiffer, 1848 accepted as Galeata schwerzenbachii (L. Pfeiffer, 1848)
- Species Clausilia scopulosa Charpentier, 1852 accepted as Albinaria scopulosa (Charpentier, 1852)
- Species Clausilia sculpticollis O. Boettger, 1883 accepted as Albinaria brevicollis sculpticollis (O. Boettger, 1883)
- Species Clausilia sebenicensis Küster, 1876 accepted as Delima blanda conspurcata (Rossmässler, 1836)
- Species Clausilia seguiniana Heude, 1885 accepted as Formosanella seguiniana (Heude, 1885)
- Species Clausilia semicostata Küster, 1853 accepted as Delima (Semirugata) bilabiata bilabiata (J. A. Wagner, 1829)
- Species Clausilia semidenticulata L. Pfeiffer, 1850 accepted as Strigillaria denticulata (Olivier, 1801)
- Species Clausilia semilabiata Walderdorff, 1864 accepted as Delima montenegrina semilabiata (Walderdorff, 1864)
- Species Clausilia semilamellata Mousson, 1863 accepted as Pravispira semilamellata (Mousson, 1863)
- Species Clausilia semipolita Bavay & Dautzenberg, 1899 accepted as Oospira semipolita (Bavay & Dautzenberg, 1899)
- Species Clausilia semirugata Rossmässler, 1836 accepted as Delima semirugata (Rossmässler, 1836)
- Species Clausilia senilis Rossmässler, 1836 accepted as Albinaria senilis (Rossmässler, 1836)
- Species Clausilia sennaariensis L. Pfeiffer, 1856 accepted as Macroptychia sennaariensis (L. Pfeiffer, 1856)
- Species Clausilia septemplicata Heude, 1882 accepted as Euphaedusa aculus (W. H. Benson, 1842)
- Species Clausilia septemplicata R. A. Philippi, 1836 accepted as Siciliaria septemplicata (R. A. Philippi, 1836)
- Species Clausilia sericata L. Pfeiffer, 1850 accepted as Isabellaria sericata (L. Pfeiffer, 1850)
- Species Clausilia sericina Rossmässler, 1836 accepted as Charpentieria septemplicata (R. A. Philippi, 1836)
- Species Clausilia sericina Möllendorff, 1882 accepted as Megalophaedusa sericina (Möllendorff, 1882)
- Species Clausilia serrata Deshayes, 1870 accepted as Serriphaedusa serrata (Deshayes, 1870)
- Species Clausilia serrulata L. Pfeiffer, 1847 accepted as Serrulina serrulata (L. Pfeiffer, 1847)
- Species Clausilia sessenheimensis H. Nordsieck, 1974 † accepted as Macrogastra sessenheimensis (H. Nordsieck, 1974) †
- Species Clausilia sexdentata Spix, 1827 accepted as Cyclodontina sexdentata (Spix, 1827)
- Species Clausilia shanghaiensis L. Pfeiffer, 1853 accepted as Clausilia shanghiensis L. Pfeiffer, 1853
- Species Clausilia shanghiensis L. Pfeiffer, 1853 accepted as Euphaedusa aculus shanghiensis (L. Pfeiffer, 1853)
- Species Clausilia sheridani L. Pfeiffer, 1866 accepted as Tauphaedusa sheridani (L. Pfeiffer, 1866)
- Species Clausilia shimangensis Godwin-Austen, 1918 accepted as Cylindrophaedusa (Montiphaedusa) annandalei (Preston, 1915)
- Species Clausilia sicula Benoit, 1876 accepted as Sicania nobilis nobilis (L. Pfeiffer, 1848)
- Species Clausilia siderea Heude, 1887 accepted as Oospira (Oospira) siderea (Heude, 1887)
- Species Clausilia sieboldi [sic] accepted as Reinia sieboldti (L. Pfeiffer, 1849)
- Species Clausilia sieboldti L. Pfeiffer, 1849 accepted as Reinia sieboldti (L. Pfeiffer, 1849)
- Species Clausilia sieversi L. Pfeiffer, 1871 accepted as Serrulina sieversi (L. Pfeiffer, 1871)
- Species Clausilia silacea Frivaldszky, 1835
- Species Clausilia silensis Pini, 1885
- Species Clausilia silesiaca A. Schmidt, 1868 accepted as Cochlodina costata silesiaca (A. Schmidt, 1868)
- Species Clausilia similaris H. Adams, 1867 accepted as Zaptyx similaris (H. Adams, 1867)
- Species Clausilia similis Charpentier, 1837 accepted as Alinda (Alinda) biplicata (Montagu, 1803)
- Species Clausilia similis Rossmässler, 1835 accepted as Alinda biplicata (Montagu, 1803)
- Species Clausilia simillima E. A. Smith, 1896 accepted as Phaedusa moluccensis simillima (E. A. Smith, 1896)
- Species Clausilia sinuata (Michaud, 1838) † accepted as Oospiroides sinuatus (Michaud, 1838) †
- Species Clausilia slosarskii Lubomirski, 1880 accepted as Peruinia slosarskii (Lubomirski, 1880)
- Species Clausilia sobrievskii Lindholm, 1913 accepted as Roseniella sobrievskii (Lindholm, 1913)
- Species Clausilia socialis L. Pfeiffer, 1848 accepted as Strigillaria varnensis (L. Pfeiffer, 1848)
- Species Clausilia solida Draparnaud, 1805 accepted as Papillifera solida (Draparnaud, 1805)
- Species Clausilia solidula L. Pfeiffer, 1856 accepted as Albinaria byzantina (Charpentier, 1852)
- Species Clausilia solidula A. Schmidt, 1868 accepted as Delima amoena substricta (Charpentier, 1852)
- Species Clausilia somchetica L. Pfeiffer, 1846 accepted as Elia somchetica (L. Pfeiffer, 1846)
- Species Clausilia soraria A. Schmidt, 1868 accepted as Delima albocincta sororia (A. Schmidt, 1868)
- Species Clausilia sordida Rossmässler, 1835 accepted as Alinda biplicata sordida (Rossmässler, 1835)
- Species Clausilia sowerbyana L. Pfeiffer, 1850 accepted as Sprattia sowerbyana (L. Pfeiffer, 1850)
- Species Clausilia spinula Heude, 1882 accepted as Euphaedusa (Dentiphaedusa) spinula (Heude, 1882)
- Species Clausilia spratti L. Pfeiffer, 1846 accepted as Albinaria spratti (L. Pfeiffer, 1846)
- Species Clausilia spreta Küster, 1861 accepted as Bulgarica denticulata (Olivier, 1801)
- Species Clausilia stabilis L. Pfeiffer, 1847 accepted as Pseudalinda stabilis (L. Pfeiffer, 1847)
- Species Clausilia stearnsi Pilsbry, 1895 accepted as Tauphaedusa stearnsii (Pilsbry, 1895)
- Species Clausilia steeriana Sykes, 1893 accepted as Nenia (Steeriana) steeriana (Sykes, 1893)
- Species Clausilia steinheimensis Quenstedt, 1884 † accepted as Triptychia steinheimensis (Quenstedt, 1884) †
- Species Clausilia stenzii Rossmässler, 1836 accepted as Charpentieria stenzii (Rossmässler, 1836)
- Species Clausilia stereoma Pilsbry, 1901 accepted as Stereophaedusa stereoma (Pilsbry, 1901)
- Species Clausilia stigmatica Rossmässler, 1836 accepted as Charpentieria stigmatica (Rossmässler, 1836)
- Species Clausilia stossichi O. Boettger, 1877 accepted as Delima pellucida (L. Pfeiffer, 1848)
- Species Clausilia straminea Heude, 1882 accepted as Clausilia flavescens Heude, 1884
- Species Clausilia straminea A. Schmidt, 1868 accepted as Albinaria candida candida (L. Pfeiffer, 1850)
- Species Clausilia straminicollis Charpentier, 1852 accepted as Alopia livida straminicollis (Charpentier, 1852)
- Species Clausilia strangulata L. Pfeiffer, 1841 accepted as Cristataria strangulata (L. Pfeiffer, 1841)
- Species Clausilia stranzendorfensis H. Nordsieck, 1990 †
- Species Clausilia strauchi O. Boettger, 1878 accepted as Mucronaria strauchi (O. Boettger, 1878)
- Species Clausilia strauchiana H. Nordsieck, 1972 †
- Species Clausilia striata L. Pfeiffer, 1850 accepted as Albinaria candida homalorhaphe (L. Pfeiffer, 1850)
- Species Clausilia striaticollis A. Schmidt, 1868
- Species Clausilia striatula F. E. Edwards, 1852 † accepted as Laminifera striatula (F. E. Edwards, 1852) †
- Species Clausilia strictaluna O. Boettger, 1877 accepted as Zaptyx strictaluna (O. Boettger, 1877)
- Species Clausilia strictecostata O. Boettger, 1878 accepted as Albinaria troglodytes strictecostata (O. Boettger, 1878)
- Species Clausilia strigata L. Pfeiffer, 1848 accepted as Delima (Delima) blanda blanda (Rossmässler, 1836)
- Species Clausilia strigata L. Pfeiffer, 1850 accepted as Albinaria virginea strigata (L. Pfeiffer, 1850)
- Species Clausilia strigillata Rossmässler, 1835 accepted as Agathylla strigillata (Rossmässler, 1835)
- Species Clausilia strigillata Rossmässler, 1836 accepted as Dilataria succineata capillacea (Rossmässler, 1836)
- Species Clausilia striolaris L. Pfeiffer, 1848 accepted as Agathylla strigillata (Rossmässler, 1835)
- Species Clausilia striolata L. Pfeiffer, 1866
- Species Clausilia strobeli Strobel, 1850 accepted as Neostyriaca strobeli (Strobel, 1850)
- Species Clausilia strumosa L. Pfeiffer, 1848 accepted as Strumosa strumosa (L. Pfeiffer, 1848)
- Species Clausilia studeri Pini, 1885
- Species Clausilia sturmii L. Pfeiffer, 1848 accepted as Stigmatica stigmatica sturmii (L. Pfeiffer, 1848)
- Species Clausilia stylus W. H. Benson, 1849
- Species Clausilia styriaca L. Pfeiffer, 1868 accepted as Cochlodina fimbriata (Rossmässler, 1835)
- Species Clausilia styriaca A. Schmidt, 1856 accepted as Neostyriaca styriaca (A. Schmidt, 1856)
- Species Clausilia subaculus Pilsbry, 1902 accepted as Tauphaedusa subaculus (Pilsbry, 1902)
- Species Clausilia subaurantiaca Pilsbry, 1900 accepted as Zaptyx stimpsoni subaurantiaca (Pilsbry, 1900)
- Species Clausilia subcristata Küster, 1847 accepted as Montenegrina subcristata (Küster, 1847)
- Species Clausilia subcylindrica Rossmässler, 1836 accepted as Delima subcylindrica (Rossmässler, 1836)
- Species Clausilia subdiaphana Benoit, 1882 accepted as Siciliaria grohmanniana (Rossmässler, 1836)
- Species Clausilia subgibbera O. Boettger, 1877 accepted as Zaptyx stimpsoni subgibbera (O. Boettger, 1877)
- Species Clausilia subgracilis A. Schmidt, 1852 accepted as Fusulus approximans (A. Schmidt, 1856)
- Species Clausilia subignobilis Pilsbry, 1902 accepted as Zaptyx subignobilis (Pilsbry, 1902)
- Species Clausilia sublamellosa O. Boettger, 1883 accepted as Albinaria sublamellosa sublamellosa (O. Boettger, 1883)
- Species Clausilia subpolita E. A. Smith, 1896 accepted as Paraphaedusa subpolita (E. A. Smith, 1896)
- Species Clausilia substricta Charpentier, 1852 accepted as Delima amoena substricta (Charpentier, 1852)
- Species Clausilia subulata L. Pfeiffer, 1848
- Species Clausilia subuliformis Küster, 1853 accepted as Clausilia bidentata moniziana R. T. Lowe, 1852
- Species Clausilia subulina Möllendorff, 1882 accepted as Megalophaedusa subulina (Möllendorff, 1882)
- Species Clausilia subvirginea O. Boettger, 1883 accepted as Albinaria troglodytes subvirginea (O. Boettger, 1883)
- Species Clausilia succinea Heude, 1887 accepted as Synprosphyma (Synprosphyma) succinea (Heude, 1887)
- Species Clausilia succineata Rossmässler, 1836 accepted as Dilataria succineata (Rossmässler, 1836)
- Species Clausilia suevica F. Sandberger, 1875 † accepted as Triptychia suevica (F. Sandberger, 1875) †
- Species Clausilia suilla Bavay & Dautzenberg, 1909 accepted as Synprosphyma suilla (Bavay & Dautzenberg, 1909)
- Species Clausilia sulcosa Rossmässler, 1835 accepted as Agathylla lamellosa (J. A. Wagner, 1829)
- Species Clausilia sulcosa J. A. Wagner, 1829 accepted as Agathylla sulcosa (J. A. Wagner, 1829)
- Species Clausilia sulcosula Rossmässler, 1835 accepted as Agathylla strigillata (Rossmässler, 1835)
- Species Clausilia sulculosa Rossmässler, 1835 accepted as Agathylla strigillata (Rossmässler, 1835)
- Species Clausilia sumarana Connolly, 1941 accepted as Sabaeola sumarana (Connolly, 1941)
- Species Clausilia sumatrana E. von Martens, 1864 accepted as Oospira sumatrana (E. von Martens, 1864)
- Species Clausilia superaddita Heude, 1882 accepted as Euphaedusa superaddita (Heude, 1882)
- Species Clausilia superstructa Küster, 1850 accepted as Delima laevissima pachygastris (Rossmässler, 1835)
- Species Clausilia surugensis Pilsbry, 1902 accepted as Megalophaedusa surugensis (Pilsbry, 1902)
- Species Clausilia suturalis F. Sandberger, 1872 † accepted as Triptychia steinheimensis (Quenstedt, 1884) †
- Species Clausilia suturalis L. Pfeiffer, 1842 accepted as Delima latilabris (J. A. Wagner, 1829)
- Species Clausilia suturalis Küster, 1861 accepted as Isabellaria saxicola suturalis (Küster, 1861)
- Species Clausilia swinhoei L. Pfeiffer, 1866 accepted as Formosana swinhoei (L. Pfeiffer, 1866)
- Species Clausilia sykesi Bavay & Dautzenberg, 1899 accepted as Oospira sykesi (Bavay & Dautzenberg, 1899)
- Species Clausilia syracusana R. A. Philippi, 1836 accepted as Muticaria syracusana (R. A. Philippi, 1836)
- Species Clausilia tabida Küster, 1860 accepted as Delima binotata gastrolepta (Rossmässler, 1836)
- Species Clausilia taczanowskii Lubomirski, 1880 accepted as Andinia taczanowskii (Lubomirski, 1880)
- Species Clausilia taeniata Rossmässler, 1836 accepted as Cochlodina orthostoma (Menke, 1828)
- Species Clausilia t-album Küster, 1861 accepted as Delima blanda conspurcata (Rossmässler, 1836)
- Species Clausilia tanegashimae Pilsbry, 1901 accepted as Megalophaedusa tanegashimae (Pilsbry, 1901)
- Species Clausilia tantilla Pilsbry, 1902 accepted as Zaptyx tantilla (Pilsbry, 1902)
- Species Clausilia tau O. Boettger, 1877 accepted as Tauphaedusa tau (O. Boettger, 1877)
- Species Clausilia taurica A. Schmidt, 1868 accepted as Mentissa gracilicosta gracilicosta (Rossmässler, 1836)
- Species Clausilia taurica L. Pfeiffer, 1848 accepted as Scrobifera taurica (L. Pfeiffer, 1848)
- Species Clausilia tenella Küster, 1861 accepted as Delima bilabiata tenella (Küster, 1861)
- Species Clausilia tenuicostata L. Pfeiffer, 1865 accepted as Albinaria tenuicostata (L. Pfeiffer, 1865)
- Species Clausilia tenuilabris Rossmässler, 1842
- Species Clausilia tenuisculpta Reuss, 1861 † accepted as Constricta tenuisculpta (Reuss, 1861) †
- Species Clausilia terebra L. Pfeiffer, 1853 accepted as Albinaria terebra (L. Pfeiffer, 1853)
- Species Clausilia teres (Olivier, 1801) accepted as Albinaria teres (Olivier, 1801)
- Species Clausilia terverii Michaud, 1855 † accepted as Triptychia terverii (Michaud, 1855) †
- Species Clausilia tetragonostoma L. Pfeiffer, 1850
- Species Clausilia tetraptyx Möllendorff, 1882
- Species Clausilia tetsui O. Boettger & Schmacker, 1894 accepted as Euphaedusa (Telophaedusa) tetsui (O. Boettger & Schmacker, 1894)
- Species Clausilia tettelbachiana Rossmässler, 1838 accepted as Clausilia dubia tettelbachiana Rossmässler, 1838
- Species Clausilia thatkheana Bavay & Dautzenberg, 1899 accepted as Selenophaedusa thatkheana (Bavay & Dautzenberg, 1899)
- Species Clausilia thaumasia Sturany, 1907 accepted as Triloba thaumasia (Sturany, 1907)
- Species Clausilia thaumatopoma Pilsbry, 1905 accepted as Zaptyx thaumatopoma (Pilsbry, 1905)
- Species Clausilia thebana E. von Martens, 1876 accepted as Isabellaria isabellina thebana (E. von Martens, 1876)
- Species Clausilia theobaldi Westerlund, 1898
- Species Clausilia therana A. Letourneux, 1884
- Species Clausilia theristica Mabille, 1887 accepted as Phaedusa theristica (Mabille, 1887)
- Species Clausilia thermopylarum L. Pfeiffer, 1850 accepted as Isabellaria thermopylarum (L. Pfeiffer, 1850)
- Species Clausilia thessalonica Rossmässler, 1839 accepted as Strigillaria thessalonica (Rossmässler, 1839)
- Species Clausilia thibetiana Deshayes, 1870 accepted as Synprosphyma thibetiana (Deshayes, 1870)
- Species Clausilia thomasiana Küster, 1850 accepted as Charpentieria dyodon thomasiana (Küster, 1850)
- Species Clausilia thracica P. Fischer, 1866 †
- Species Clausilia thracica P. Hesse, 1912 accepted as Euxina persica (O. Boettger, 1879)
- Species Clausilia tiberiana Benoit, 1876 accepted as Siciliaria tiberii tiberii (A. Schmidt, 1868)
- Species Clausilia tiberii A. Schmidt, 1868 accepted as Charpentieria tiberii (A. Schmidt, 1868)
- Species Clausilia tichobates L. Pfeiffer, 1868 accepted as Delima blanda tichobates (L. Pfeiffer, 1868)
- Species Clausilia timalthea Sykes, 1898 accepted as Formosana timalthea (Sykes, 1898)
- Species Clausilia tokarana Pilsbry, 1909 accepted as Zaptyx daemonorum tokarana (Pilsbry, 1909)
- Species Clausilia torquata Held, 1837 accepted as Cochlodina orthostoma (Menke, 1828)
- Species Clausilia tosana Pilsbry, 1900 accepted as Stereophaedusa tosana (Pilsbry, 1900)
- Species Clausilia trachelostropha Möllendorff, 1885 accepted as Streptodera trachelostropha (Möllendorff, 1885)
- Species Clausilia translucida L. Pfeiffer, 1847
- Species Clausilia travnicana Brancsik, 1888
- Species Clausilia tridens Schweigger, 1820 accepted as Nenia tridens (Schweigger, 1820)
- Species Clausilia triloba O. Boettger, 1877 accepted as Cochlodina (Stabilea) triloba (O. Boettger, 1877)
- Species Clausilia tripleuroptyx Pilsbry, 1909 accepted as Stereophaedusa tripleuroptyx (Pilsbry, 1909)
- Species Clausilia tristrami L. Pfeiffer, 1860 accepted as Mauritanica tristrami (L. Pfeiffer, 1860)
- Species Clausilia troglodytes A. Schmidt, 1868 accepted as Albinaria troglodytes (A. Schmidt, 1868)
- Species Clausilia truncatula Lamarck, 1822 accepted as Amphicosmia truncatula (Lamarck, 1822)
- Species Clausilia tschetschenica L. Pfeiffer, 1866 accepted as Elia ossetica (Mousson, 1863)
- Species Clausilia tuba Hanley, 1868 accepted as Indonenia tuba (Hanley, 1868)
- Species Clausilia tumens Beck, 1837 accepted as Albinaria corrugata corrugata (Bruguière, 1792)
- Species Clausilia tumida Küster, 1853 accepted as Delima bilabiata alschingeri (Charpentier, 1852)
- Species Clausilia tumida Rossmässler, 1836 accepted as Macrogastra tumida (Rossmässler, 1836)
- Species Clausilia turgida Rossmässler, 1836 accepted as Vestia turgida turgida (Rossmässler, 1836)
- Species Clausilia turrita L. Pfeiffer, 1850 accepted as Albinaria turrita (L. Pfeiffer, 1850)
- Species Clausilia turritella G. B. Sowerby II, 1875 accepted as Hemiphaedusa (Cylindrophaedusa) turritella (G. B. Sowerby II, 1875)
- Species Clausilia turritus Anton, 1838 accepted as Strobilus turritus (Anton, 1838)
- Species Clausilia umbilicata O. Boettger, 1879 accepted as Montenegrina umbilicata (O. Boettger, 1879)
- Species Clausilia undulata L. Pfeiffer, 1848 accepted as Graciliaria inserta (Porro, 1841)
- Species Clausilia undulata Küster, 1852 accepted as Boettgeria lowei (Albers, 1852)
- Species Clausilia ungulata Rossmässler, 1835 accepted as Cochlodina costata ungulata (Rossmässler, 1835)
- Species Clausilia unicolor O. Boettger, 1889 accepted as Albinaria pseudunicolor H. Nordsieck, 2024
- Species Clausilia unicristata O. Boettger, 1877 accepted as Armenica unicristata (O. Boettger, 1877)
- Species Clausilia unidentata Küster, 1861 accepted as Idyla castalia unidentata (Küster, 1861)
- Species Clausilia unilamellata Mousson, 1856 accepted as Clausilia index Mousson, 1863
- Species Clausilia usitata E. A. Smith, 1896 accepted as Paraphaedusa usitata (E. A. Smith, 1896)
- Species Clausilia valida L. Pfeiffer, 1849 accepted as Stereophaedusa valida (L. Pfeiffer, 1849)
- Species Clausilia validiuscula E. von Martens, 1876 accepted as Stereophaedusa interlamellaris validiuscula (E. von Martens, 1876)
- Species Clausilia vallata Mousson, 1859 accepted as Vallatia vallata (Mousson, 1859)
- Species Clausilia vanbuensis Bavay & Dautzenberg, 1899 accepted as Oospira vanbuensis (Bavay & Dautzenberg, 1899)
- Species Clausilia variegata (A. Adams, 1868) accepted as Reinia variegata (A. Adams, 1868)
- Species Clausilia varnensis L. Pfeiffer, 1848 accepted as Bulgarica varnensis (L. Pfeiffer, 1848)
- Species Clausilia vasta O. Boettger, 1877 accepted as Stereophaedusa vasta (O. Boettger, 1877)
- Species Clausilia vatheleti Bavay & Dautzenberg, 1899 accepted as Phaedusa (Phaedusa) theristica vatheleti (Bavay & Dautzenberg, 1899)
- Species Clausilia ventricosa (Draparnaud, 1801) accepted as Macrogastra ventricosa (Draparnaud, 1801)
- Species Clausilia ventriluna Pilsbry, 1905 accepted as Megalophaedusa ventriluna (Pilsbry, 1905)
- Species Clausilia venusta A. Schmidt, 1868 accepted as Isabellaria thermopylarum thermopylarum (L. Pfeiffer, 1850)
- Species Clausilia veruta Heude, 1890 accepted as Macrophaedusa veruta (Heude, 1890)
- Species Clausilia vesicalis Rossmässler, 1857 accepted as Cristataria vesicalis (Rossmässler, 1857)
- Species Clausilia vespa A. Gould, 1856 accepted as Oospira vespa (A. Gould, 1856)
- Species Clausilia vesti O. Boettger, 1883 accepted as Albinaria teres extensa (L. Pfeiffer, 1865)
- Species Clausilia vetusta Rossmässler, 1836 accepted as Strigillaria (Strigillaria) vetusta vetusta (Rossmässler, 1836)
- Species Clausilia vibex Rossmässler, 1839 accepted as Delima semirugata vibex (Rossmässler, 1839)
- Species Clausilia vidovichii L. Pfeiffer, 1846 accepted as Delima vidovichii (L. Pfeiffer, 1846)
- Species Clausilia villae A. Schmidt, 1856 accepted as Clausilia brembina brembina Strobel, 1850
- Species Clausilia vinacea Heude, 1882
- Species Clausilia vincotiana Heude, 1885 accepted as Sinigena vincotiana (Heude, 1885)
- Species Clausilia virgata Rossmässler, 1836 accepted as Papillifera papillaris affinis (R. A. Philippi, 1836)
- Species Clausilia virginea L. Pfeiffer, 1846 accepted as Albinaria virginea (L. Pfeiffer, 1846)
- Species Clausilia virgo Mousson, 1854 accepted as Albinaria virgo (Mousson, 1854)
- Species Clausilia viridana Rossmässler, 1836 accepted as Pseudalinda viridana (Rossmässler, 1836)
- Species Clausilia viridiflava O. Boettger, 1877 accepted as Stereophaedusa viridiflava (O. Boettger, 1877)
- Species Clausilia vitrea A. Schmidt, 1868 accepted as Delima blanda conspurcata (Rossmässler, 1836)
- Species Clausilia voithii Rossmässler, 1836 accepted as Albinaria voithii (Rossmässler, 1836)
- Species Clausilia vulcanica Benoit, 1881 accepted as Stigmatica vulcanica (Benoit, 1881)
- Species Clausilia vulgata Reuss, 1849 † accepted as Triptychia vulgata (Reuss, 1849) †
- Species Clausilia vulpina Heude, 1887 accepted as Synprosphyma (Synprosphyma) vulpina (Heude, 1887)
- Species Clausilia waageni Stoliczka, 1872 accepted as Cylindrophaedusa (Montiphaedusa) waageni (Stoliczka, 1872)
- Species Clausilia walderdorffii L. Pfeiffer, 1861 accepted as Agathylla regularis (L. Pfeiffer, 1861)
- Species Clausilia wetzleri K. Miller, 1907 † accepted as Clausilia manca Wenz, 1919 †
- Species Clausilia whateliana Charpentier, 1850 accepted as Neostyriaca whateliana (Charpentier, 1850)
- Species Clausilia wuellerstorfi Zelebor, 1867 accepted as Oospira wuellerstorfi (Zelebor, 1867)
- Species Clausilia yaeyamensis Pilsbry, 1905 accepted as Zaptyx yaeyamensis (Pilsbry, 1905)
- Species Clausilia yokohamensis Crosse, 1873 accepted as Megalophaedusa martensi (E. von Martens, 1861)
- Species Clausilia zelebori Rossmässler, 1856 accepted as Cristataria zelebori (Rossmässler, 1856)
- Species Clausilia ziegleri Küster, 1845 accepted as Herilla ziegleri ziegleri (Küster, 1845)
- Genus Dyodonta W. Hartmann, 1842 accepted as Fusulus Fitzinger, 1833
- Genus Erjavecia Brusina, 1870
- Genus Erjaveciella H. Nordsieck, 1977 accepted as Fusulus (Erjaveciella) H. Nordsieck, 1977
- Genus Fusulus Fitzinger, 1833 (4)
- Genus Hollabrunnella H. Nordsieck, 2007 † (1)
- Genus Julica H. Nordsieck, 1963 accepted as Macrogastra (Julica) H. Nordsieck, 1963 (1)
- Genus Macrogastra W. Hartmann, 1841 (18)
- Genus Micridyla H. Nordsieck, 1973 (1)
- Genus Neostyria A. J. Wagner, 1920 accepted as Neostyriaca A. J. Wagner, 1920
- Genus Neostyriaca A. J. Wagner, 1920 (8)
- Genus Parafusulus H. Nordsieck, 2007 † accepted as Fusulus Fitzinger, 1833
- Genus Pliodiptychia H. Nordsieck, 1978 † (1)
- Genus Pseudidyla O. Boettger, 1877 † (9)
- Genus Pseudofusulus H. Nordsieck, 1977 (1)
- Genus Rupicola W. Hartmann, 1841 accepted as Clausilia Draparnaud, 1805
- Genus Ruthenica Lindholm, 1924 (2)
- Genus Trigonostoma Vest, 1867 accepted as Erjavecia Brusina, 1870
- Genus Trolliella H. Nordsieck, 1981 † (1)
- Genus Truciella H. Nordsieck, 1978 † (1)
- Tribe Emarginariini H. Nordsieck, 2007 † (2)
- Tribe Euxinellini Neubert, 2002 (3)
- Tribe Filosini H. Nordsieck, 1979 (6)
- Tribe Graciliariini H. Nordsieck, 1979 (1)
- Tribe Mentissoideini Lindholm, 1924 (34)
- Tribe Olympicolini Neubert, 2002 (1)
- Tribe Strigileuxinini H. Nordsieck, 1994 (10)
- Tribe Strumosini H. Nordsieck, 1994 (2)
- Genus Scrobiferoides Neubert, 1996 † (1)
- Subfamily Cochlodininae Lindholm, 1925 accepted as Cochlodinini Lindholm, 1925 (1923)
- Subfamily Constrictinae H. Nordsieck, 1981 † (7)
- Subfamily Eualopiinae H. Nordsieck, 1978 † (30)
- Subfamily Euxininae I. M. Likharev, 1962 accepted as Clausiliinae J. E. Gray, 1855
- Subfamily Garnieriinae C. R. Boettger, 1926 (61)
- Subfamily Laminiferinae Wenz, 1923 (24)
- Subfamily Mentissoideinae Lindholm, 1924 accepted as Mentissoideini Lindholm, 1924
- Subfamily Neniinae Wenz, 1923 (14)
- Subfamily Peruiniinae H. Nordsieck, 2005 (144)
- Subfamily Phaedusinae A. J. Wagner, 1922 (758)
- Subfamily Serrulininae Ehrmann, 1927 accepted as Serrulinini Ehrmann, 1927
- Subfamily Synprosphyminae H. Nordsieck, 2007 accepted as Phaedusinae A. J. Wagner, 1922
- Genus Cirrobasis Conrad, 1874 † (1)
- Genus Dactylius F. Sandberger, 1872 † accepted as Filholia Bourguignat, 1877 †
- Genus Dactylomorpha Gude, 1911 † accepted as Filholia Bourguignat, 1877 †
- Genus Dextroformosana O. Boettger & Schmacker, 1894 accepted as Formosana O. Boettger, 1877
- Genus Dextrospira Hrubesch, 1965 † (1)
- Genus Distortiphaedusa Grego & Szekeres, 2011 accepted as Oospira (Distortiphaedusa) Grego & Szekeres, 2011
- Genus Pirostoma Möllendorff, 1873 accepted as Macrogastra W. Hartmann, 1841
- Family Filholiidae Wenz, 1923 † (82)
- Family Palaeostoidae H. Nordsieck, 1986 † (15)
- Infraorder Helicina incertae sedis (3 210)
- Infraorder Helicoidei (5 690)
- Infraorder Limacoidei (4 251)
- Infraorder Oleacinoidei (497)
- Infraorder Orthalicoidei (1 578)
- Infraorder Partuloinei accepted as Pupilloidei
- Infraorder Pupilloidei (3 436)
- Infraorder Rhytidoidei (581)
- Infraorder Sagdoinei accepted as Helicoidei
- Infraorder Succineoidei (384)
- Suborder Orthurethra accepted as Pupilloidei
- Suborder Scolodontina (165)
- Suborder Sigmurethra accepted as Helicina
- Suborder Stylommatophora incertae sedis (75)
- Order Systellommatophora (224)
- Superorder Hygrophila (2 005)
- Superorder Pneumopulmonata
- Superorder Pylopulmonata (4 285)
- Superorder Sacoglossa (391)
- Superorder Siphonarimorpha (163)
- Order Anaspidea accepted as Aplysiida
- Order Aplysiida (101)
- Order Aplysiomorpha accepted as Aplysiida
- Order Archaeopulmonata accepted as Siphonarioidea Gray, 1827
- Order Bullomorpha accepted as Cephalaspidea
- Order Cephalaspidea (1 034)
- Order Heterostropha accepted as Pyramidellidae J. E. Gray, 1840
- Order Pteropoda (414)
- Order Runcinacea accepted as Runcinida
- Order Runcinida (80)
- Order Tectibranchiata
- Order Thecosomata
- Order Umbraculida (15)
- Superorder Euthyneura incertae sedis
- Infraclass Heterobranchia incertae sedis (478)
- Infraclass Mesoneura (108)
- Infraclass Opisthobranchia
- Infraclass Pulmonata
- Subclass Neomphaliones accepted as Vetigastropoda
- Subclass Neritimorpha (1 914)
- Subclass Orthogastropoda represented as Gastropoda
- Subclass Patellogastropoda (511)
- Subclass Prosobranchia
- Subclass Psilogastropoda represented as Gastropoda
- Subclass Vetigastropoda (6 782)
- Class Lamellibranchiata accepted as Bivalvia
- Class Loricata accepted as Polyplacophora
- Class Mollusca incertae sedis † (372)
- Class Monoplacophora (229)
- Class Pelecypoda accepted as Bivalvia
- Class Polyplacophora (1 377)
- Class Polyplaxiphora accepted as Polyplacophora
- Class Rostroconchia † (64)
- Class Scaphopoda (752)
- Class Solenoconchia accepted as Scaphopoda
- Class Solenogastres (313)
- Subclass Chaetodermomorpha accepted as Caudofoveata
