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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)
- Infraorder Helicina incertae sedis (3 210)
- Infraorder Helicoidei (5 690)
- Infraorder Limacoidei (4 251)
- Infraorder Oleacinoidei (497)
- Infraorder Orthalicoidei (1 578)
- Superfamily Bulimuloidea Tryon, 1867 accepted as Orthalicoidea E. von Martens, 1860
- Superfamily Orthalicoidea E. von Martens, 1860 (1 578)
- Family Amphibulimidae P. Fischer, 1873 (109)
- Family Bothriembryontidae Iredale, 1937 (168)
- Family Bulimulidae Tryon, 1867 (940)
- Subfamily Berendtiinae P. Fischer & Crosse, 1872 accepted as Bulimulinae Tryon, 1867
- Subfamily Bostrycinae Breure, 2012 (219)
- Subfamily Bulimulidae incertae sedis (9)
- Subfamily Bulimulinae Tryon, 1867 (309)
- Subfamily Odontostominae Pilsbry & Vanatta, 1898 accepted as Odontostomidae Pilsbry & Vanatta, 1898
- Subfamily Peltellinae Gray, 1855 (403)
- Genus Antidrymaeus Germain, 1907 (9)
- Genus Drymaeus Albers, 1850 (190)
- Subgenus Drymaeus (Antidrymaeus) Germain, 1907 accepted as Antidrymaeus Germain, 1907
- Subgenus Drymaeus (Diaphanomormus) Weyrauch, 1964 accepted as Mesembrinus Albers, 1850
- Subgenus Drymaeus (Drymaeus) Albers, 1850 represented as Drymaeus Albers, 1850
- Subgenus Drymaeus (Leiostracus) Albers, 1850 accepted as Leiostracus Albers, 1850
- Subgenus Drymaeus (Leptodrymaeus) Pilsbry, 1946 accepted as Mesembrinus Albers, 1850
- Subgenus Drymaeus (Mesembrinus) Albers, 1850 accepted as Mesembrinus Albers, 1850
- Subgenus Drymaeus (Metadrymaeus) Pilsbry, 1926 represented as Drymaeus Albers, 1850
- Subgenus Drymaeus (Mormus) E. von Martens, 1860 accepted as Drymaeus Albers, 1850 (1)
- Subgenus Drymaeus (Neopetraeus) E. von Martens, 1885 accepted as Neopetraeus E. von Martens, 1885
- Subgenus Drymaeus (Ornatimormus) Weyrauch, 1958 accepted as Mesembrinus (Ornatimormus) Weyrauch, 1958
- Subgenus Drymaeus (Orodrymaeus) Pilsbry, 1926 accepted as Mesembrinus Albers, 1850
- Subgenus Drymaeus (Stenostylus) Pilsbry, 1898 accepted as Stenostylus Pilsbry, 1898
- Subgenus Drymaeus (Zaplagius) Pilsbry, 1896 accepted as Cochlorina Jan, 1830
- Species Drymaeus abruptus (Rolle, 1904)
- Species Drymaeus abscissus (L. Pfeiffer, 1855) accepted as Bulimus fallax L. Pfeiffer, 1853
- Species Drymaeus abyssorum (A. d'Orbigny, 1835)
- Species Drymaeus acervatus (L. Pfeiffer, 1857)
- Species Drymaeus acobambensis Weyrauch, 1967 accepted as Mesembrinus acobambensis (Weyrauch, 1967)
- Species Drymaeus acuminatus S. I. Da Costa, 1906
- Species Drymaeus aequatorianus (E. A. Smith, 1877)
- Species Drymaeus aestivus (L. Pfeiffer, 1857) accepted as Mesembrinus aestivus (L. Pfeiffer, 1857)
- Species Drymaeus alabastinus (Hylton Scott, 1952) accepted as Drymaeus alabastrinus Hylton Scott, 1952
- Species Drymaeus alabastrinus S. I. Da Costa, 1906 accepted as Mesembrinus alabastrinus (S. I. Da Costa)
- Species Drymaeus alabastrinus Hylton Scott, 1952 accepted as Drymaeus hyltoni Parodiz, 1957
- Species Drymaeus albolabiatus (E. A. Smith, 1877)
- Species Drymaeus albostriatus (Strebel, 1882) accepted as Mesembrinus albostriatus (Strebel, 1882)
- Species Drymaeus alsophilus (Phillipi, 1867) accepted as Mesembrinus alsophilus (Philippi, 1867)
- Species Drymaeus altenai Breure, 1976 accepted as Mesembrinus altenai (Breure, 1976)
- Species Drymaeus alternans (H. Beck, 1837)
- Species Drymaeus amandus (L. Pfeiffer, 1855) accepted as Mesembrinus amandus (L. Pfeiffer, 1855)
- Species Drymaeus ambustus (Reeve, 1849)
- Species Drymaeus amoenus (L. Pfeiffer, 1847) accepted as Mesembrinus amoenus (L. Pfeiffer, 1847)
- Species Drymaeus anceps (Albers, 1854) accepted as Mesembrinus anceps (Albers, 1854)
- Species Drymaeus andai Jousseaume, 1898
- Species Drymaeus andicola (L. Pfeiffer, 1847) accepted as Drymaeus multilineatus (Say, 1825)
- Species Drymaeus angulobasis Pilsbry, 1944 accepted as Mesembrinus angulobasis (Pilsbry, 1944)
- Species Drymaeus angustus S. I. Da Costa, 1906
- Species Drymaeus annulatus (Reeve, 1849) accepted as Mesembrinus annulatus (Reeve, 1849)
- Species Drymaeus antioquensis (L. Pfeiffer, 1855) accepted as Drymaeus baranguillanus (L. Pfeiffer, 1853)
- Species Drymaeus apicepunctatus (Preston, 1914) accepted as Mesembrinus apicepunctatus (Preston, 1914)
- Species Drymaeus araujoi Vega-Luz, Breure & Mogollón, 2024
- Species Drymaeus arcuatostriatus (L. Pfeiffer, 1855)
- Species Drymaeus attenuatus (L. Pfeiffer, 1853) accepted as Mesembrinus attenuatus (L. Pfeiffer, 1853)
- Species Drymaeus aurantiostomus F. G. Thompson & Deisler, 1982 accepted as Drymaeus branneri F. Baker, 1914
- Species Drymaeus aureolus (Guppy, 1866) accepted as Mesembrinus aureolus (Guppy, 1866)
- Species Drymaeus aurifluus (L. Pfeiffer, 1857) accepted as Mesembrinus aurifluus (L. Pfeiffer, 1857)
- Species Drymaeus auris (L. Pfeiffer, 1866)
- Species Drymaeus aurisratti (R. A. Philippi, 1867)
- Species Drymaeus baezensis (Hidalgo, 1869)
- Species Drymaeus bahamensis (L. Pfeiffer, 1862) accepted as Mesembrinus bahamensis (L. Pfeiffer, 1862)
- Species Drymaeus baranguillanus (L. Pfeiffer, 1853)
- Species Drymaeus bartletti (H. Adams, 1867)
- Species Drymaeus basitorus F. Haas, 1951
- Species Drymaeus bellus S. I. Da Costa, 1906 accepted as Drymaeus smithii (S. I. Da Costa, 1898)
- Species Drymaeus bequaerti Weyrauch, 1956 accepted as Mesembrinus bequaerti (Weyrauch, 1956)
- Species Drymaeus beyerleanus (Hupé, 1857)
- Species Drymaeus bifasciatus (Burrow, 1815) accepted as Oxychona bifasciata (Burrow, 1815)
- Species Drymaeus binominis (E. A. Smith, 1895) accepted as Mesembrinus binominis (E. A. Smith, 1895)
- Species Drymaeus bivittatus (G. B. Sowerby I, 1833)
- Species Drymaeus blandi Pilsbry, 1898 accepted as Drymaeus smithii (S. I. Da Costa, 1898)
- Species Drymaeus bogotensis (L. Pfeiffer, 1855)
- Species Drymaeus bolivarii (A. d'Orbigny, 1835)
- Species Drymaeus bolivianus (L. Pfeiffer, 1846)
- Species Drymaeus borellii (Ancey, 1897) accepted as Bostryx borellii (Ancey, 1897)
- Species Drymaeus botterii (Crosse & P. Fischer, 1875) accepted as Mesembrinus botterii (Crosse & P. Fischer, 1875)
- Species Drymaeus boucardi S. I. Da Costa, 1907
- Species Drymaeus bourcieri (L. Pfeiffer, 1853)
- Species Drymaeus bourgeoisae Rehder, 1943 accepted as Drymaeus droueti (L. Pfeiffer, 1857)
- Species Drymaeus brachysoma (A. d'Orbigny, 1835)
- Species Drymaeus branneri F. Baker, 1914
- Species Drymaeus broadwayi (E. A. Smith, 1896) accepted as Mesembrinus broadwayi (E. A. Smith, 1896)
- Species Drymaeus bucia (L. Pfeiffer, 1859)
- Species Drymaeus buckleyi (G. B. Sowerby III, 1895)
- Species Drymaeus bugabensis (E. von Martens, 1893) accepted as Mesembrinus bugabensis (E. von Martens, 1893)
- Species Drymaeus cactivorus (Broderip, 1832) accepted as Mesembrinus cactivorus (Broderip, 1832)
- Species Drymaeus canaliculatus (L. Pfeiffer, 1845)
- Species Drymaeus canarius (L. Pfeiffer, 1867) accepted as Mesembrinus trujillensis (Philippi, 1867)
- Species Drymaeus cantatus (Reeve, 1848)
- Species Drymaeus carandaitensis (Preston, 1907) accepted as Bostryx carandaitiensis (Preston, 1907)
- Species Drymaeus carandaitiensis (Preston, 1907) accepted as Bostryx carandaitiensis (Preston, 1907)
- Species Drymaeus castaneostrigatus S. I. Da Costa, 1906
- Species Drymaeus castilhensis Simone & Amaral, 2018
- Species Drymaeus castus (L. Pfeiffer, 1847)
- Species Drymaeus catenae F. Haas, 1952
- Species Drymaeus caucaensis (S. I. Da Costa, 1898)
- Species Drymaeus cecileae (J. Moricand, 1858) accepted as Drymaeus strigatus (G. B. Sowerby I, 1833)
- Species Drymaeus celendinensis Weyrauch, 1956 accepted as Mesembrinus celendinensis (Weyrauch, 1956)
- Species Drymaeus championi (E. von Martens, 1893) accepted as Mesembrinus championi (E. von Martens, 1893)
- Species Drymaeus chanchamayensis (Hidalgo, 1870)
- Species Drymaeus chenui (R. A. Philippi, 1867) accepted as Scutalus versicolor chenui (R. A. Philippi, 1867)
- Species Drymaeus chevallieri Breure, 1976 accepted as Mesembrinus rufolineatus (Drouët, 1859)
- Species Drymaeus chiapasensis (L. Pfeiffer, 1866)
- Species Drymaeus chiapensis (L. Pfeiffer, 1866) accepted as Drymaeus chiapasensis (L. Pfeiffer, 1866)
- Species Drymaeus chimborasensis (Reeve, 1848)
- Species Drymaeus chiriquiensis S. I. Da Costa, 1901 accepted as Mesembrinus chiriquiensis (S. I. Da Costa, 1901)
- Species Drymaeus chrysomelas (E. von Martens, 1867) accepted as Mesembrinus chrysomelas (E. von Martens, 1867)
- Species Drymaeus clarus (L. Pfeiffer, 1857)
- Species Drymaeus clathratus (L. Pfeiffer, 1858) accepted as Mesembrinus clathratus (L. Pfeiffer, 1858)
- Species Drymaeus cleefi Breure & Eskens, 1981 accepted as Stenostylus nigrolimbatus (L. Pfeiffer, 1853)
- Species Drymaeus coarctatus (L. Pfeiffer, 1845)
- Species Drymaeus coelestini F. Haas, 1952 accepted as Mesembrinus coelestini (F. Haas, 1952)
- Species Drymaeus cognatus Pilsbry, 1901
- Species Drymaeus colimensis (Rolle, 1895)
- Species Drymaeus colombianus (I. Lea, 1838) accepted as Mesembrinus colombianus (I. Lea, 1838)
- Species Drymaeus columbianus (I. Lea, 1838) accepted as Drymaeus colombianus (I. Lea, 1838)
- Species Drymaeus columbiensis (L. Pfeiffer, 1855) accepted as Mesembrinus columbiensis (L. Pfeiffer, 1855)
- Species Drymaeus combinai (Weyrauch, 1958)
- Species Drymaeus comis (Preston, 1907) accepted as Drymaeus (Drymaeus) pealianus (I. Lea, 1838)
- Species Drymaeus confluens (L. Pfeiffer, 1855)
- Species Drymaeus conicus S. I. Da Costa, 1907
- Species Drymaeus conus Pilsbry, 1902 accepted as Mesembrinus conus (Pilsbry, 1902)
- Species Drymaeus convexus (L. Pfeiffer, 1855)
- Species Drymaeus costaricensis (L. Pfeiffer, 1862) accepted as Mesembrinus costaricensis (L. Pfeiffer, 1862)
- Species Drymaeus costatus Breure & Vega-Luz, 2021
- Species Drymaeus cozumelensis H. G. Richards, 1937 accepted as Mesembrinus cozumelensis (H. G. Richards, 1937)
- Species Drymaeus cucullus (Morelet, 1849) accepted as Succinea cucullus (Morelet, 1849)
- Species Drymaeus curianensis (Reeve, 1849)
- Species Drymaeus currais Simone, Belz & Gernet, 2020
- Species Drymaeus cuticula (L. Pfeiffer, 1855) accepted as Cochlorina aurisleporis (Bruguière, 1792)
- Species Drymaeus cuzcoensis (Reeve, 1849) accepted as Mesembrinus cuzcoensis (Reeve, 1849)
- Species Drymaeus cygneus (R. A. Philippi, 1867) accepted as Scutalus versicolor cygneus (R. A. Philippi, 1867)
- Species Drymaeus cylindricus S. I. Da Costa, 1901 accepted as Mesembrinus cylindricus (S. I. Da Costa, 1901)
- Species Drymaeus dacostae (G. B. Sowerby III, 1892)
- Species Drymaeus dakryodes Salvador, Cavallari & Simone, 2015
- Species Drymaeus debilis (Beck, 1837)
- Species Drymaeus decoloratus (G. B. Sowerby I, 1833) accepted as Mesembrinus decoloratus (G. B. Sowerby I, 1833)
- Species Drymaeus decoratus (I. Lea, 1838)
- Species Drymaeus delphinae (J. Moricand, 1858) accepted as Drymaeus strigatus (G. B. Sowerby I, 1833)
- Species Drymaeus denticulus Breure & Borrero, 2019
- Species Drymaeus depictus (Reeve, 1849) accepted as Mesembrinus depictus (Reeve, 1849)
- Species Drymaeus discrepans (G. B. Sowerby I, 1833) accepted as Mesembrinus discrepans (G. B. Sowerby I, 1833)
- Species Drymaeus dombeyanus (L. Pfeiffer, 1842)
- Species Drymaeus dominicus (Reeve, 1850) accepted as Mesembrinus dominicus (Reeve, 1850)
- Species Drymaeus dormani (W. G. Binney, 1857) accepted as Antidrymaeus dormani (W. G. Binney, 1857)
- Species Drymaeus droueti (L. Pfeiffer, 1857) accepted as Mesembrinus droueti (L. Pfeiffer, 1857)
- Species Drymaeus dubius (L. Pfeiffer, 1853) accepted as Mesembrinus dubius (L. Pfeiffer, 1853)
- Species Drymaeus dunkeri (L. Pfeiffer, 1846)
- Species Drymaeus duplexannulus Breure & Borrero, 2019
- Species Drymaeus dutaillyi (L. Pfeiffer, 1857) accepted as Mesembrinus dutaillyi (L. Pfeiffer, 1857)
- Species Drymaeus edmuelleri (Albers, 1854)
- Species Drymaeus elegantissimus (Mousson, 1873) accepted as Drymaeus felix (L. Pfeiffer, 1862)
- Species Drymaeus elongatus (Röding, 1798) accepted as Mesembrinus elongatus (Röding, 1798)
- Species Drymaeus elsteri S. I. Da Costa, 1901
- Species Drymaeus emeus (Say, 1829) accepted as Mesembrinus emeus (Say, 1829)
- Species Drymaeus erectus (Reeve, 1849) accepted as Bulimulus erectus (Reeve, 1849)
- Species Drymaeus eucosmetus F. Haas, 1955 accepted as Mesembrinus eucosmetus (F. Haas, 1955)
- Species Drymaeus eurystomus (R. A. Philippi, 1867)
- Species Drymaeus eusterius Pilsbry, 1944 accepted as Drymaeus chanchamayensis (Hidalgo, 1870)
- Species Drymaeus eversus (Mousson, 1873) accepted as Drymaeus confluens (L. Pfeiffer, 1855)
- Species Drymaeus exoticus S. I. Da Costa, 1901
- Species Drymaeus expansus (L. Pfeiffer, 1848)
- Species Drymaeus expatriatus (Preston, 1909)
- Species Drymaeus extraneus (F. Haas, 1955)
- Species Drymaeus fabrefactus (Reeve, 1848)
- Species Drymaeus fairchildi Bequaert, 1949
- Species Drymaeus fallax (L. Pfeiffer, 1853)
- Species Drymaeus farrisi (L. Pfeiffer, 1858) accepted as Mesembrinus farrisi (L. Pfeiffer, 1858)
- Species Drymaeus fasciarum Pilsbry, 1939 accepted as Mesembrinus fasciarum (Pilsbry, 1939)
- Species Drymaeus felix (L. Pfeiffer, 1862)
- Species Drymaeus fenestratus (L. Pfeiffer, 1846)
- Species Drymaeus fenestrellus (E. von Martens, 1863) accepted as Mesembrinus fenestrellus (E. von Martens, 1863)
- Species Drymaeus feriatus (Reeve, 1848)
- Species Drymaeus fidaensis (J. Moricand, 1858) accepted as Leiostracus clouei (L. Pfeiffer, 1857)
- Species Drymaeus fidustus (Reeve, 1849) accepted as Mesembrinus fidustus (Reeve, 1849)
- Species Drymaeus flavidulus (E. A. Smith, 1877) accepted as Mesembrinus flavidulus (E. A. Smith, 1877)
- Species Drymaeus flavidus (Menke, 1829) accepted as Mesembrinus flavidus (Menke, 1829)
- Species Drymaeus flexilabris (L. Pfeiffer, 1854)
- Species Drymaeus flexuosus (L. Pfeiffer, 1853)
- Species Drymaeus flossdorfi (Holmberg, 1909)
- Species Drymaeus fordii Pilsbry, 1898
- Species Drymaeus fresnoensis Pilsbry, 1898 accepted as Drymaeus convexus (L. Pfeiffer, 1855)
- Species Drymaeus fucatus (Reeve, 1848)
- Species Drymaeus fusagasuganus Pilsbry, 1935 accepted as Drymaeus convexus (L. Pfeiffer, 1855)
- Species Drymaeus fuscobasis (E. A. Smith, 1877) accepted as Mesembrinus fuscobasis (E. A. Smith, 1877)
- Species Drymaeus fusoides (A. d'Orbigny, 1835)
- Species Drymaeus gabbi (Angas, 1879) accepted as Mesembrinus gabbi (Angas, 1879)
- Species Drymaeus geometricus (L. Pfeiffer, 1846)
- Species Drymaeus gereti Ancey, 1901 accepted as Antidrymaeus gereti (Ancey, 1901)
- Species Drymaeus germaini (Ancey, 1892)
- Species Drymaeus ghiesbreghti (L. Pfeiffer, 1866) accepted as Mesembrinus ghiesbreghti (L. Pfeiffer, 1866)
- Species Drymaeus gibber F. Haas, 1949
- Species Drymaeus glaucostomus (Albers, 1852)
- Species Drymaeus goianensis Dutra-Clarke & F. B. Souza, 1991
- Species Drymaeus gorgonensis F. Haas, 1966 accepted as Mesembrinus gorgonensis (F. Haas, 1966)
- Species Drymaeus granadensis (L. Pfeiffer, 1848) accepted as Mesembrinus granadensis (L. Pfeiffer, 1848)
- Species Drymaeus gratus (L. Pfeiffer, 1856) accepted as Drymaeus columbiensis (L. Pfeiffer, 1855)
- Species Drymaeus gruneri (L. Pfeiffer, 1846) accepted as Drymaeus colombianus (I. Lea, 1838)
- Species Drymaeus gueinzii (L. Pfeiffer, 1857)
- Species Drymaeus hamadryas (R. A. Philippi, 1867) accepted as Drymaeus eurystomus (R. A. Philippi, 1867)
- Species Drymaeus harringtoni W. B. Marshall, 1931 accepted as Drymaeus hygrohylaeus (A. d'Orbigny, 1835)
- Species Drymaeus hegewischi (L. Pfeiffer, 1842) accepted as Mesembrinus hegewischi (L. Pfeiffer, 1842)
- Species Drymaeus henrypilsbry (Weyrauch, 1958)
- Species Drymaeus henselii (E. von Martens, 1868)
- Species Drymaeus hepaticus (Albers, 1854) accepted as Bostryx hepaticus (Albers, 1854)
- Species Drymaeus hepatostomus (L. Pfeiffer, 1861) accepted as Mesembrinus hepatostomus (L. Pfeiffer, 1861)
- Species Drymaeus herrerae Bartsch, 1907 accepted as Mesembrinus uhdeanus uhdeanus (E. von Martens, 1863)
- Species Drymaeus heterogeneus (L. Pfeiffer, 1866) accepted as Mesembrinus heterogeneus (L. Pfeiffer, 1866)
- Species Drymaeus hidalgoi (S. I. DaCosta, 1898)
- Species Drymaeus hjalmarsoni (L. Pfeiffer, 1856) accepted as Mesembrinus hjalmarsoni (L. Pfeiffer, 1856)
- Species Drymaeus hondurasanus (L. Pfeiffer, 1846) accepted as Mesembrinus hondurasanus (L. Pfeiffer, 1846)
- Species Drymaeus hygrohylaeus (A. d'Orbigny, 1835)
- Species Drymaeus hyltoni Parodiz, 1957
- Species Drymaeus icterostomus (E. von Martens, 1901)
- Species Drymaeus iheringi (Leme, 1968)
- Species Drymaeus immaculatus (Reeve, 1850) accepted as Antidrymaeus immaculatus (Reeve, 1850)
- Species Drymaeus imperfectus (Guppy, 1866) accepted as Mesembrinus imperfectus (Guppy, 1866)
- Species Drymaeus inaequalis (L. Pfeiffer, 1857)
- Species Drymaeus inca M. Smith, 1943
- Species Drymaeus inclinatus (L. Pfeiffer, 1862)
- Species Drymaeus incognitus S. I. Da Costa, 1907 accepted as Drymaeus smithii (S. I. Da Costa, 1898)
- Species Drymaeus inconspicuus (F. Haas, 1949) accepted as Mesembrinus inconspicuus (F. Haas, 1949)
- Species Drymaeus inglorius (Reeve, 1848) accepted as Mesembrinus inglorius (Reeve, 1848)
- Species Drymaeus iniurius Breure & Borrero, 2019
- Species Drymaeus insulaecygni W. F. Clapp, 1914 accepted as Mesembrinus insulaecygni (W. F. Clapp, 1914)
- Species Drymaeus intermissus Breure & Borrero, 2019
- Species Drymaeus interpictus (E. von Martens, 1867)
- Species Drymaeus interpunctus (E. von Martens, 1886) accepted as Mesembrinus interpunctus (E. von Martens, 1886)
- Species Drymaeus interruptofasciatus Vernhout, 1914 accepted as Mesembrinus rufolineatus (Drouët, 1859)
- Species Drymaeus interruptus (Preston, 1909) accepted as Mesembrinus interruptus (Preston, 1909)
- Species Drymaeus intrapictus Pilsbry, 1930 accepted as Mesembrinus intrapictus (Pilsbry, 1930)
- Species Drymaeus inusitatus (Fulton, 1900) accepted as Antidrymaeus inusitatus (Fulton, 1900)
- Species Drymaeus iodostomus (Deville & Hupé, 1850) accepted as Drymaeus expansus (L. Pfeiffer, 1848)
- Species Drymaeus iracema (Simone, 2015) accepted as Drymaeus coarctatus (L. Pfeiffer, 1845)
- Species Drymaeus irazuensis (Angas, 1878) accepted as Mesembrinus irazuensis (Angas, 1878)
- Species Drymaeus iris (Piaget, 1914) accepted as Mesembrinus iris (Piaget, 1914)
- Species Drymaeus jonasi (L. Pfeiffer, 1846) accepted as Mesembrinus jonasi (L. Pfeiffer, 1846)
- Species Drymaeus josephus (Angas, 1878)
- Subspecies Drymaeus josephus concolor (E. von Martens, 1893)
- Subspecies Drymaeus josephus errans Pilsbry, 1926
- Subspecies Drymaeus josephus josephus (Angas, 1878)
- Subspecies Drymaeus josephus maculosus (E. von Martens, 1893)
- Species Drymaeus joubini Germain, 1907 accepted as Mesembrinus joubini (Germain, 1907)
- Species Drymaeus jousseaumei Dautzenberg, 1901
- Species Drymaeus keppelli (L. Pfeiffer, 1854) accepted as Mesembrinus keppelli (L. Pfeiffer, 1854)
- Species Drymaeus knorri L. Pfeiffer, 1846 accepted as Drymaeus trigonostomus (Jonas, 1844)
- Species Drymaeus koppeli (G. B. Sowerby III, 1892) accepted as Mesembrinus koppeli (G. B. Sowerby III, 1892)
- Species Drymaeus lacteus (I. Lea, 1838) accepted as Mesembrinus lacteus (I. Lea, 1838)
- Species Drymaeus laetus (Reeve, 1849) accepted as Mesembrinus laetus (Reeve, 1849)
- Species Drymaeus lamas (E. T. Higgins, 1868) accepted as Mesembrinus lamas (E. T. Higgins, 1868)
- Species Drymaeus laticinctus (Guppy, 1868) accepted as Antidrymaeus multifasciatus laticinctus (Guppy, 1868)
- Species Drymaeus latitesta F. Haas, 1952 accepted as Drymaeus icterostomus (E. von Martens, 1901)
- Species Drymaeus lattrei (L. Pfeiffer, 1846)
- Species Drymaeus lautus (A. Gould, 1856)
- Species Drymaeus laxostylus (Rolle, 1904)
- Species Drymaeus leai Pilsbry, 1898
- Species Drymaeus lentiginosus (R. A. Philippi, 1869) accepted as Mesembrinus lentiginosus (R. A. Philippi, 1869)
- Species Drymaeus leucomelas (Albers, 1854) accepted as Mesembrinus leucomelas (Albers, 1854)
- Species Drymaeus libertadensis Pilsbry, 1898 accepted as Mesembrinus libertadensis (Pilsbry, 1898)
- Species Drymaeus lilacinus (Reeve, 1849)
- Species Drymaeus liliaceus (A. Férussac, 1832) accepted as Mesembrinus liliaceus (A. Férussac, 1832)
- Species Drymaeus limicolarioides F. Haas, 1936
- Species Drymaeus lineolatus (Conrad, 1855) accepted as Mesembrinus lineolatus (Conrad, 1855)
- Species Drymaeus linostoma (A. d'Orbigny, 1835)
- Species Drymaeus linostomus [sic] accepted as Drymaeus linostoma (A. d'Orbigny, 1835)
- Species Drymaeus lirinus (Morelet, 1851) accepted as Mesembrinus lirinus (Morelet, 1851)
- Species Drymaeus livescens (L. Pfeiffer, 1842) accepted as Mesembrinus livescens (L. Pfeiffer, 1842)
- Species Drymaeus lividus (Reeve, 1850) accepted as Mesembrinus lividus (Reeve, 1850)
- Species Drymaeus lophoicus (A. d'Orbigny, 1835)
- Species Drymaeus loxanus (E. T. Higgins, 1872) accepted as Mesembrinus loxanus (E. T. Higgins, 1872)
- Species Drymaeus loxensis (L. Pfeiffer, 1846) accepted as Mesembrinus loxensis (L. Pfeiffer, 1846)
- Species Drymaeus luculentus Breure & Vega-Luz, 2021
- Species Drymaeus lusorius (L. Pfeiffer, 1855) accepted as Mesembrinus lusorius (L. Pfeiffer, 1855)
- Species Drymaeus lynchi Parodiz, 1946 accepted as Mesembrinus lynchi (Parodiz, 1946)
- Species Drymaeus magus (J. A. Wagner, 1827)
- Species Drymaeus malleatus (S. I. Da Costa, 1898)
- Species Drymaeus manupictus (Reeve, 1848) accepted as Mesembrinus manupictus (Reeve, 1848)
- Species Drymaeus marcapatensis Breure, 1979
- Species Drymaeus marmarinus (A. d'Orbigny, 1835)
- Species Drymaeus mayaorum Rehder, 1966 accepted as Mesembrinus mayaorum (Rehder, 1966)
- Species Drymaeus meesi Breure, 1976
- Species Drymaeus megas Pilsbry, 1944
- Species Drymaeus megastomus J. J. Parodiz, 1963
- Species Drymaeus membielinus (Crosse, 1867)
- Species Drymaeus membranaceus (R. A. Philippi, 1846) accepted as Mesembrinus membranaceus (R. A. Phillipi, 1846)
- Species Drymaeus meridanus (L. Pfeiffer, 1846) accepted as Mesembrinus meridanus (L. Pfeiffer, 1846)
- Species Drymaeus mexicanus (Lamarck, 1822) accepted as Mesembrinus mexicanus (Lamarck, 1822)
- Species Drymaeus micropyrus Simone & Amaral, 2018
- Species Drymaeus miliaris (R. A. Philippi, 1867) accepted as Mesembrinus miliaris (R. A. Philippi, 1867)
- Species Drymaeus miltochrous (Albers, 1854) accepted as Mesembrinus miltochrous (Albers, 1854)
- Species Drymaeus minor (A. d'Orbigny, 1837) accepted as Drymaeus poecilus (A. d'Orbigny, 1835)
- Species Drymaeus monachus (L. Pfeiffer, 1857) accepted as Bulimulus monachus (L. Pfeiffer, 1857)
- Species Drymaeus monilifer (Reeve, 1848) accepted as Mesembrinus monilifer (Reeve, 1848)
- Species Drymaeus morbidus (R. A. Philippi, 1867)
- Species Drymaeus moricandi (L. Pfeiffer, 1847) accepted as Mesembrinus moricandi (L. Pfeiffer, 1847)
- Species Drymaeus moritinctus (E. von Martens, 1893) accepted as Mesembrinus moritinctus (E. von Martens, 1893)
- Species Drymaeus mossi (E. A. Smith, 1896) accepted as Mesembrinus mossi (E. A. Smith, 1896)
- Species Drymaeus moussoni (L. Pfeiffer, 1853) accepted as Mesembrinus moussoni (L. Pfeiffer, 1853)
- Species Drymaeus muelleggeri Jaeckel, 1927
- Species Drymaeus muliebris (Reeve, 1849) accepted as Mesembrinus muliebris (Reeve, 1849)
- Species Drymaeus multifasciatus (Lamarck, 1822) accepted as Antidrymaeus multifasciatus (Lamarck, 1822)
- Species Drymaeus multiguttatus Weyrauch, 1964
- Species Drymaeus multilineatus (Say, 1825) accepted as Mesembrinus multilineatus (Say, 1825)
- Species Drymaeus murrinus (Reeve, 1848)
- Species Drymaeus narcissus (Albers, 1854)
- Species Drymaeus nebulosus Breure & Ablett, 2024
- Species Drymaeus necaxanus Solem, 1955 accepted as Mesembrinus necaxanus (Solem, 1955)
- Species Drymaeus niceforonis Pilsbry, 1939 accepted as Mesembrinus niceforonis (Pilsbry, 1939)
- Species Drymaeus nigroapicatus (L. Pfeiffer, 1857) accepted as Mesembrinus nigroapicatus (L. Pfeiffer, 1857)
- Species Drymaeus nigrofasciatus (L. Pfeiffer, 1846) accepted as Mesembrinus nigrofasciatus (L. Pfeiffer, 1846)
- Species Drymaeus nigroflavus Simone & Celzard, 2024
- Species Drymaeus nigrogularis (Dohrn, 1882)
- Species Drymaeus nitidus (Broderip, 1832) accepted as Mesembrinus nitidus (Broderip, 1832)
- Species Drymaeus notabilis S. I. Da Costa, 1906
- Species Drymaeus notatus S. I. Da Costa, 1906
- Species Drymaeus nubilus Preston, 1903 accepted as Drymaeus recluzianus martensianus Pilsbry, 1899
- Species Drymaeus nystianus (L. Pfeiffer, 1853)
- Species Drymaeus obliquistriatus S. I. Da Costa, 1901 accepted as Bostryx obliquistriatus (S. I. Da Costa, 1901)
- Species Drymaeus ochrocheilus (E. A. Smith, 1877)
- Species Drymaeus ommatidia Dorado & Roosen, 2024
- Species Drymaeus oreades (A. d'Orbigny, 1835) accepted as Mesembrinus oreades (A. d'Orbigny, 1835)
- Species Drymaeus orthostoma (E. A. Smith, 1877)
- Species Drymaeus paeteli (Albers, 1854) accepted as Mesembrinus paeteli (Albers, 1854)
- Species Drymaeus palassus Breure & Eskens, 1981
- Species Drymaeus palliolum (A. Férussac, 1821)
- Species Drymaeus pamplonensis Pilsbry, 1939
- Species Drymaeus papyraceus (Mawe, 1823)
- Species Drymaeus papyrifactus Pilsbry, 1898
- Species Drymaeus parvicygni Pilsbry, 1930 accepted as Mesembrinus parvicygni (Pilsbry, 1930)
- Species Drymaeus paucipunctus Pilsbry, 1898
- Species Drymaeus pealianus (I. Lea, 1838)
- Species Drymaeus peelii (Reeve, 1859)
- Species Drymaeus perductorum Rehder, 1943 accepted as Mesembrinus perductorum (Rehder, 1943)
- Species Drymaeus pereirai Parodiz, 1958 accepted as Mesembrinus pereirai (Parodiz, 1958)
- Species Drymaeus pergracilis (Rolle, 1904) accepted as Mesembrinus pergracilis (Rolle, 1904)
- Species Drymaeus pertristis Pilsbry, 1898 accepted as Mesembrinus pertristis (Pilsbry, 1898)
- Species Drymaeus pervariabilis (L. Pfeiffer, 1853) accepted as Mesembrinus pervariabilis (L. Pfeiffer, 1853)
- Species Drymaeus petasites (K. Miller, 1878)
- Species Drymaeus phryne (L. Pfeiffer, 1863) accepted as Mesembrinus phryne (L. Pfeiffer, 1863)
- Species Drymaeus pilsbryi Zetek, 1933 accepted as Mesembrinus pilsbryi (Zetek, 1933)
- Species Drymaeus pilsbryi Weyrauch, 1956 accepted as Mesembrinus pergracilis (Rolle, 1904)
- Species Drymaeus planibasis Pilsbry, 1932
- Species Drymaeus plicatoliratus (Da Costa, 1898) accepted as Drymaeus convexus (L. Pfeiffer, 1855)
- Species Drymaeus pluvialis (L. Pfeiffer, 1862) accepted as Mesembrinus pluvialis (L. Pfeiffer, 1862)
- Species Drymaeus poecilus (A. d'Orbigny, 1835)
- Species Drymaeus polygramma (S. Moricand, 1836)
- Species Drymaeus polygrammus (S. Moricand, 1836) accepted as Mesembrinus polygrammus (S. Moricand, 1836)
- Species Drymaeus ponsonbyi S. I. da Costa, 1907 accepted as Mesembrinus ponsonbyi (S. I. da Costa, 1907)
- Species Drymaeus praetextus (Reeve, 1849) accepted as Mesembrinus praetextus (Reeve, 1849)
- Species Drymaeus prestoni S. I. Da Costa, 1906
- Species Drymaeus protractus (L. Pfeiffer, 1855)
- Species Drymaeus pseudelatus F. Haas, 1951
- Species Drymaeus pseudobesus Breure, 1979 accepted as Mesembrinus pseudobesus (Breure, 1979)
- Species Drymaeus pseudofusoides S. I. Da Costa, 1906
- Species Drymaeus puellaris (Reeve, 1850) accepted as Mesembrinus puellaris (Reeve, 1850)
- Species Drymaeus pulchellus (Broderip, 1832) accepted as Mesembrinus vexillum (W. Wood, 1828)
- Species Drymaeus pulcherrimus (H. Adams, 1867) accepted as Mesembrinus pulcherrimus (H. Adams, 1867)
- Species Drymaeus punctatus S. I. Da Costa, 1907
- Species Drymaeus puncticulatus (L. Pfeiffer, 1857) accepted as Mesembrinus puncticulatus (L. Pfeiffer, 1857)
- Species Drymaeus quadrifasciatus (Angas, 1878)
- Species Drymaeus quadrifasciatus Vernhout, 1914
- Species Drymaeus rabuti (Jousseaume, 1898)
- Species Drymaeus rawsoni (Guppy, 1871) accepted as Mesembrinus rawsoni (Guppy, 1871)
- Species Drymaeus recedens (L. Pfeiffer, 1864) accepted as Drymaeus serratus (L. Pfeiffer, 1855)
- Species Drymaeus recluzianus (L. Pfeiffer, 1847) accepted as Mesembrinus recluzianus (L. Pfeiffer, 1847)
- Species Drymaeus rectilinearis (L. Pfeiffer, 1855)
- Species Drymaeus rectilineatus (L. Pfeiffer, 1855) accepted as Drymaeus rectilinearis (L. Pfeiffer, 1855)
- Species Drymaeus regularis Fulton, 1905
- Species Drymaeus rehderi J. J. Parodiz, 1963 accepted as Drymaeus expansus (L. Pfeiffer, 1848)
- Species Drymaeus rhoadsi Pilsbry, 1932
- Species Drymaeus riberoi Ihering, 1915
- Species Drymaeus rosalbus Pilsbry, 1932 accepted as Mesembrinus rosalbus (Pilsbry, 1932)
- Species Drymaeus roseatus (Reeve, 1848) accepted as Mesembrinus roseatus (Reeve, 1850)
- Species Drymaeus rosenbergi S. I. Da Costa, 1906
- Species Drymaeus rubrovariegatus (E. T. Higgins, 1868) accepted as Mesembrinus scitulus (Reeve, 1849)
- Species Drymaeus rudis (Anton, 1838) accepted as Mesembrinus rudis (Anton, 1838)
- Species Drymaeus rufescens (J. E. Gray, 1825) accepted as Antidrymaeus rufescens (J. E. Gray, 1825)
- Species Drymaeus rufolineatus (Drouët, 1859) accepted as Mesembrinus rufolineatus (Drouët, 1859)
- Species Drymaeus rugistriatus F. Haas, 1952
- Species Drymaeus saccatus (L. Pfeiffer, 1855) accepted as Drymaeus strigatus (G. B. Sowerby I, 1833)
- Species Drymaeus sachsei (Albers, 1854) accepted as Mesembrinus sachsei (Albers, 1854)
- Species Drymaeus sallei Pilsbry, 1899 accepted as Mesembrinus sallei (Pilsbry, 1899)
- Species Drymaeus sanctaemarthae Pilsbry, 1901
- Species Drymaeus sargi (Crosse & P. Fischer, 1875) accepted as Mesembrinus sargi (Crosse & P. Fischer, 1875)
- Species Drymaeus schadei Quintana & Magaldi, 1985
- Species Drymaeus schmidti (L. Pfeiffer, 1854)
- Species Drymaeus schunkei F. Haas, 1949
- Species Drymaeus scitulus (Reeve, 1849) accepted as Mesembrinus scitulus (Reeve, 1849)
- Species Drymaeus scoliodes Dautzenberg, 1902
- Species Drymaeus selli (Preston, 1909)
- Species Drymaeus semifasciatus (Mousson, 1869) accepted as Mesembrinus semifasciatus (Mousson, 1869)
- Species Drymaeus semimaculatus Pilsbry, 1898 accepted as Mesembrinus semimaculatus (Pilsbry, 1898)
- Species Drymaeus semipellucidus (Tristram, 1861) accepted as Mesembrinus semipellucidus (Tristram, 1861)
- Species Drymaeus semistriatus F. Haas, 1955
- Species Drymaeus sentatus Oliveira, Silveira e Sà & Bessa, 1992
- Species Drymaeus serenus (R. A. Philippi, 1867) accepted as Mesembrinus vexillum (W. Wood, 1828)
- Species Drymaeus serperastrum (Say, 1829)
- Species Drymaeus serratus (L. Pfeiffer, 1855)
- Species Drymaeus shattucki Bequaert & Clench, 1931 accepted as Mesembrinus shattucki (Bequaert & Clench, 1931)
- Species Drymaeus signifer (L. Pfeiffer, 1855)
- Species Drymaeus silvanus Zilch, 1953 accepted as Mesembrinus silvanus (Zilch, 1953)
- Species Drymaeus similaris (J. Moricand, 1856)
- Species Drymaeus siolii F. Haas, 1952
- Species Drymaeus smithii (S. I. Da Costa, 1898)
- Species Drymaeus solidus (Preston, 1907)
- Species Drymaeus sophiae Breure, 1979
- Species Drymaeus souzalopesi Weyrauch, 1965
- Species Drymaeus spadiceus S. I. Da Costa, 1906
- Species Drymaeus spectatus (Reeve, 1849)
- Species Drymaeus stigmaticus (R. A. Philippi, 1867) accepted as Mesembrinus stigmaticus (R. A. Philippi, 1867)
- Species Drymaeus stramineus (Guilding, 1824) accepted as Antidrymaeus stramineus (Guilding, 1824)
- Species Drymaeus strigatus (G. B. Sowerby I, 1833)
- Species Drymaeus studeri (L. Pfeiffer, 1847)
- Species Drymaeus subeffusus (R. A. Philippi, 1869)
- Species Drymaeus subhybridus (da Costa, 1906) accepted as Drymaeus pulcherrimus (H. Adams, 1867)
- Species Drymaeus subinterruptus (L. Pfeiffer, 1853)
- Species Drymaeus subpellucidus (E. A. Smith, 1877) accepted as Mesembrinus subpellucidus (E. A. Smith, 1877)
- Species Drymaeus subsemiclausus (Petit de la Saussaye, 1843)
- Species Drymaeus subsimilaris Pilsbry, 1898
- Species Drymaeus subventricosus S. I. Da Costa, 1901
- Species Drymaeus succineus Pilsbry, 1901
- Species Drymaeus sulcosus (L. Pfeiffer, 1841) accepted as Mesembrinus sulcosus (L. Pfeiffer, 1841)
- Species Drymaeus sulfureus (L. Pfeiffer, 1857) accepted as Drymaeus sulphureus (L. Pfeiffer, 1857)
- Species Drymaeus sulphureus (L. Pfeiffer, 1857) accepted as Antidrymaeus sulphureus (L. Pfeiffer, 1857)
- Species Drymaeus suprapunctatus F. Baker, 1914
- Species Drymaeus surinamensis Vernhout, 1914 accepted as Mesembrinus lusorius (L. Pfeiffer, 1855)
- Species Drymaeus sykesi S. I. Da Costa, 1906
- Species Drymaeus tenuilabris (L. Pfeiffer, 1866) accepted as Mesembrinus tenuilabris (L. Pfeiffer, 1866)
- Species Drymaeus terreus (Simone, 2015) accepted as Drymaeus coarctatus (L. Pfeiffer, 1845)
- Species Drymaeus tigrinus (Da Costa, 1898)
- Species Drymaeus torallii (A. d'Orbigny, 1835) accepted as Bostryx torallii (A. d'Orbigny, 1835)
- Species Drymaeus totonacus (Strebel, 1882) accepted as Mesembrinus totonacus (Strebel, 1882)
- Species Drymaeus translucens (Broderip, 1832) accepted as Mesembrinus translucens (Broderip, 1832)
- Species Drymaeus translucidus Weyrauch, 1967
- Species Drymaeus tribalteatus (Reeve, 1848) accepted as Mesembrinus tribalteatus (Reeve, 1848)
- Species Drymaeus trigonostomus (Jonas, 1844) accepted as Mesembrinus trigonostomus (Jonas, 1844)
- Species Drymaeus trimarianus (E. von Martens, 1893) accepted as Mesembrinus trimarianus (E. von Martens, 1893)
- Species Drymaeus tripictus (Albers, 1857) accepted as Mesembrinus tripictus (Albers, 1857)
- Species Drymaeus trivittatus (Mousson, 1873) accepted as Drymaeus felix (L. Pfeiffer, 1862)
- Species Drymaeus tropicalis (Morelet, 1849) accepted as Mesembrinus tropicalis (Morelet, 1849)
- Species Drymaeus trujillensis (R. A. Philippi, 1867) accepted as Mesembrinus trujillensis (Philippi, 1867)
- Species Drymaeus tryoni (Crosse & P. Fischer, 1875) accepted as Mesembrinus tryoni (Crosse & P. Fischer, 1875)
- Species Drymaeus tusagasuganus Pilsbry, 1935 accepted as Drymaeus convexus (L. Pfeiffer, 1855)
- Species Drymaeus tzubi D. S. Dourson, Caldwell & J. A. Dourson, 2018
- Species Drymaeus uhdeanus (E. von Martens, 1863) accepted as Mesembrinus uhdeanus (E. von Martens, 1863)
- Species Drymaeus umbraticus (Reeve, 1849) accepted as Mesembrinus umbraticus (Reeve, 1849)
- Species Drymaeus undulatus (Guilding, 1828) accepted as Mesembrinus undulatus (Guilding, 1828)
- Species Drymaeus valentini Breure & Vega-Luz, 2020
- Species Drymaeus vanattai Pilsbry, 1898 accepted as Drymaeus expansus (L. Pfeiffer, 1848)
- Species Drymaeus venezuelensis (E. von Martens, 1893) accepted as Mesembrinus membranaceus (R. A. Phillipi, 1846)
- Species Drymaeus ventricosus (Preston, 1907)
- Species Drymaeus verecundus Breure & Mogollón, 2019
- Species Drymaeus vernhouti Breure, 1976 accepted as Mesembrinus vernhouti (Breure, 1976)
- Species Drymaeus vespertinus (L. Pfeiffer, 1858) accepted as Mesembrinus vespertinus (L. Pfeiffer, 1858)
- Species Drymaeus vexillum (W. Wood, 1828) accepted as Mesembrinus vexillum (W. Wood, 1828)
- Species Drymaeus vicinus (Preston, 1907)
- Species Drymaeus villavicioensis Breure, 1977
- Species Drymaeus vincentinus (L. Pfeiffer, 1846) accepted as Mesembrinus vincentinus (L. Pfeiffer, 1846)
- Species Drymaeus violaceus (Mousson, 1873) accepted as Drymaeus confluens (L. Pfeiffer, 1855)
- Species Drymaeus virginalis (L. Pfeiffer, 1856) accepted as Mesembrinus virginalis (L. Pfeiffer, 1856)
- Species Drymaeus virgo (I. Lea, 1838) accepted as Drymaeus colombianus (I. Lea, 1838)
- Species Drymaeus virgulatus (A. Férussac, 1821) accepted as Drymaeus elongatus (Röding, 1798)
- Species Drymaeus volsus Fulton, 1907
- Species Drymaeus waldoschmitti J. J. Parodiz, 1963 accepted as Mesembrinus waldoschmitti (J. J. Parodiz, 1963)
- Species Drymaeus weeksi Pilsbry, 1926
- Species Drymaeus wintlei S. G. Finch, 1929 accepted as Mesembrinus wintlei (S. G. Finch, 1929)
- Species Drymaeus yapacanensis Breure, 1981
- Species Drymaeus zhorquinensis (Angas, 1879)
- Species Drymaeus ziczac (Da Costa, 1898)
- Species Drymaeus ziegleri (L. Pfeiffer, 1847) accepted as Mesembrinus ziegleri (L. Pfeiffer, 1847)
- Species Drymaeus zilchi F. Haas, 1955 accepted as Mesembrinus zilchi (F. Haas, 1955)
- Species Drymaeus zingarensis Restrepo & Breure, 1987
- Species Drymaeus zoographicus (A. d'Orbigny, 1835)
- Genus Hamadryas Albers, 1850 accepted as Drymaeus Albers, 1850
- Genus Mesembrinus Albers, 1850 (162)
- Genus Neopetraeus E. von Martens, 1885 (16)
- Genus Peltella J. E. Gray, 1855 accepted as Drymaeus Albers, 1850
- Genus Pseudoxychona Pilsbry, 1930 (5)
- Genus Scutalus Albers, 1850 (21)
- Genus Bulimus Bruguière, 1789
- Genus Liostracus [sic] accepted as Leiostracus Albers, 1850
- Family Cyclodontinidae Salvador & Breure, 2023 (110)
- Family Liguidae Pilsbry, 1891 accepted as Orthalicidae E. von Martens, 1860
- Family Megaspiridae Pilsbry, 1904 (58)
- Family Orthalicidae E. von Martens, 1860 (108)
- Family Placostylidae Pilsbry, 1946 accepted as Placostylinae Pilsbry, 1946
- Family Simpulopsidae Schileyko, 1999 (61)
- Family Tomogeridae Jousseaume, 1877 (24)
- 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
