Abbottella (Abbottella) J. B. Henderson & Bartsch, 1920 represented as Abbottella J. B. Henderson & Bartsch, 1920 (basis of record)
Abbottella (Gundlachtudora) C. de la Torre & Bartsch, 1941 accepted as Tudora (Gundlachtudora) C. de la Torre & Bartsch, 1941 represented as Tudora J. E. Gray, 1850 (basis of record)
Abchasohela Hudec & Lezhawa, 1971 (basis of record)
Aberdaria Blume, 1965 accepted as Primigulella Pilsbry, 1919 (basis of record)
Acantharion E. Binder & Tillier, 1985 (basis of record)
Acanthennea E. von Martens, 1898 (basis of record)
Acavella Jousseaume, 1894 accepted as Oligospira Ancey, 1887 (basis of record)
Acavus Montfort, 1810 (basis of record)
Achatina (Euaethiopina) Bequaert, 1950 accepted as Lissachatina Bequaert, 1950 (basis of record)
Achatina (Lissachatina) Bequaert, 1950 accepted as Lissachatina Bequaert, 1950 (basis of record)
Achatina (Melia) Albers, 1850 accepted as Euvaricella H. B. Baker, 1935 (basis of record)
Achatina (Pintoa) Bourguignat, 1890 represented as Achatina Lamarck, 1799 (basis of record)
Achatium Link, 1807 accepted as Achatina Lamarck, 1799 (basis of record)
Acheronopa Hyman & J. Stanisic, 2005 (basis of record)
Acicula W. Hartmann, 1821 (basis of record)
Acroptychia Crosse & P. Fischer, 1877 (basis of record)
Acrostylus Clench, 1935 accepted as Malaitella Clench, 1941 accepted as Eumecostylus E. von Martens, 1860 (basis of record)
Acrotoma (Acrotoma) O. Boettger, 1881 represented as Acrotoma O. Boettger, 1881 (basis of record)
Acrotoma (Acrotomina) H. Nordsieck, 1977 represented as Acrotoma O. Boettger, 1881 (basis of record)
Acrotoma (Bzybia) H. Nordsieck, 1977 accepted as Acrotoma (Acrotoma) O. Boettger, 1881 represented as Acrotoma O. Boettger, 1881 (basis of record)
Acrotoma (Castelliana) Suvorov, 2002 accepted as Acrotoma O. Boettger, 1881 (basis of record)
Acrotomini H. Nordsieck, 1979 (basis of record)
Actinella R. T. Lowe, 1852 (basis of record)
Actinella (Actinella) R. T. Lowe, 1852 represented as Actinella R. T. Lowe, 1852 (basis of record)
Actinella (Hispidella) R. T. Lowe, 1852 represented as Actinella R. T. Lowe, 1852 (basis of record)
Actinella (Plebecula) R. T. Lowe, 1852 accepted as Plebecula R. T. Lowe, 1852 (basis of record)
Acusta E. von Martens, 1860 (basis of record)
Acutidens Pilsbry, 1956 accepted as Linisa Pilsbry, 1930 (basis of record)
Adamsiella (Adamsiellops) J. B. Henderson & Bartsch, 1920 represented as Adamsiella L. Pfeiffer, 1851 (basis of record)
Adriaca Westerlund, 1884 accepted as Delima (Semirugata) O. Boettger, 1877 represented as Delima W. Hartmann, 1842 (basis of record)
Aerope E. von Martens, 1860 accepted as Natalina Pilsbry, 1893 (basis of record)
Aetholitis J. Stanisic, 2010 (basis of record)
Aferulus E. von Martens, 1897 accepted as Maizania Bourguignat, 1890 (basis of record)
Afristreptaxis Thiele, 1932 (basis of record)
Afroconulus Van Mol & van Bruggen, 1971 (basis of record)
Afroguppya de Winter & van Bruggen, 1992 (basis of record)
Afropunctum F. Haas, 1934 (basis of record)
Agriolimacinae H. Wagner, 1935 (basis of record)
Agriolimax Mörch, 1865 accepted as Deroceras Rafinesque, 1820 (basis of record)
Ainohelix Kuroda & Iw. Taki, 1933 (basis of record)
Akramowskia H. Nordsieck, 1975 (basis of record)
Alabastrina Kobelt, 1904 accepted as Loxana Pallary, 1899 (basis of record)
Alabastrina (Alabastrina) Kobelt, 1904 represented as Alabastrina Kobelt, 1904 accepted as Loxana Pallary, 1899 (basis of record)
Alabastrina (Guilia) Pallary, 1926 represented as Alabastrina Kobelt, 1904 accepted as Loxana Pallary, 1899 (basis of record)
Alabastrina (Lechatelieria) Pallary, 1926 represented as Alabastrina Kobelt, 1904 accepted as Loxana Pallary, 1899 (basis of record)
Alabastrina (Loxana) Pallary, 1899 accepted as Loxana Pallary, 1899 (basis of record)
Alabastrina (Siretia) Pallary, 1926 represented as Alabastrina Kobelt, 1904 accepted as Loxana Pallary, 1899 (basis of record)
Albanodelima A. J. Wagner, 1924 accepted as Montenegrina O. Boettger, 1877 (basis of record)
Albinaria (Albinaria) Vest, 1867 represented as Albinaria Vest, 1867 (basis of record)
Albinaria (Graeca) O. Boettger, 1877 represented as Albinaria Vest, 1867 (basis of record)
Alcadia (Penisoltia) H. B. Baker, 1954 represented as Alcadia J. E. Gray, 1840 (basis of record)
Alcidia Bourguignat, 1890 accepted as Streptaxis J. E. Gray, 1837 (basis of record)
Aleatelix Iredale, 1941 accepted as Sulcobasis Tapparone Canefri, 1883 (source of synonymy)
Allaegopis A. Riedel, 1979 (basis of record)
Allentula Iredale, 1958 accepted as Allenella Iredale, 1944 (basis of record)
Allisma Iredale, 1941 accepted as Pupinella J. E. Gray, 1850 (basis of record)
Allocoptis F. G. Thompson & Franz, 1976 (basis of record)
Alloglossa Lindström, 1868 accepted as Chondrina Reichenbach, 1828 (basis of record)
Allognathini Westerlund, 1903 (basis of record)
Allognathus (Allognathus) Pilsbry, 1888 represented as Allognathus Pilsbry, 1888 (basis of record)
Allogona (Dysmedoma) Pilsbry, 1939 represented as Allogona Pilsbry, 1939 (basis of record)
Allogonini K. C. Emberton, 1995 (basis of record)
Allopeas H. B. Baker, 1935 (basis of record)
Alopia (Nixa) Szekeres, 1976 accepted as Alopia H. Adams & A. Adams, 1855 (basis of record)
Alopiinae A. J. Wagner, 1913 (basis of record)
Alpidelima A. J. Wagner, 1924 accepted as Charpentieria Stabile, 1864 (basis of record)
Alpinipupina J. Stanisic, 2010 (basis of record)
Altenaia Zilch, 1972 (basis of record)
Alteniella Clerx & E. Gittenberger, 1977 (basis of record)
Altidelos J. Stanisic, 2010 (basis of record)
Amalia Moquin-Tandon, 1855 accepted as Milax J. E. Gray, 1855 (basis of record)
Amastra (Heteramastra) Pilsbry, 1911 represented as Amastra H. Adams & A. Adams, 1855 (basis of record)
Amatarion Van Mol, 1970 (basis of record)
Ambipupina Iredale, 1937 accepted as Necopupina Iredale, 1937 (basis of record)
Amborhytida Climo, 1974 (basis of record)
Amenixesta Iredale, 1941 (basis of record)
Ammonitella J. G. Cooper, 1869 (basis of record)
Ampelita H. Beck, 1837 (basis of record)
Ampelita (Vescona) K. C. Emberton, 1990 represented as Ampelita H. Beck, 1837 (basis of record)
Ampelita (Xystera) K. C. Emberton, 1990 represented as Ampelita H. Beck, 1837 (basis of record)
Amphibina W. Hartmann, 1821 accepted as Succinea Draparnaud, 1801 (basis of record)
Amphibulima Lamarck, 1805 (basis of record)
Amphicoelina Zilch, 1960 (basis of record)
Amphiconophora Suter, 1909 accepted as Pseudaneitea T. D. A. Cockerell, 1891 (basis of record)
Amphicyclotinae Kobelt & Möllendorff, 1897 (basis of record)
Amphicyclotulus Kobelt, 1912 (basis of record)
Amphicyclotulus (Amphicyclotulus) Kobelt, 1912 represented as Amphicyclotulus Kobelt, 1912 (basis of record)
Amphicyclotulus (Cycloblandia) Bartsch, 1942 represented as Amphicyclotulus Kobelt, 1912 (basis of record)
Amphicyclotus Crosse & P. Fischer, 1879 (basis of record)
Amphikonophora Suter, 1897 accepted as Pseudaneitea T. D. A. Cockerell, 1891 (basis of record)
Amphiscopus Westerlund, 1887 (basis of record)
Amphorella R. T. Lowe, 1852 (basis of record)
Amphorella (Amphorella) R. T. Lowe, 1852 represented as Amphorella R. T. Lowe, 1852 (basis of record)
Amphorella (Fusillus) R. T. Lowe, 1852 represented as Amphorella R. T. Lowe, 1852 (basis of record)
Anadeninus Simroth, 1912 (basis of record)
Anadeninus (Anadeninus) Simroth, 1912 represented as Anadeninus Simroth, 1912 (basis of record)
Anadeninus (Neoanadenus) Wiktor, D.-N. Chen & M. Wu, 2000 represented as Anadeninus Simroth, 1912 (basis of record)
Anadeninus (Vietanadenus) Kuzminykh & Schileyko, 2005 represented as Anadeninus Simroth, 1912 (basis of record)
Anadenus Heynemann, 1863 (basis of record)
Anadenus (Anadenus) Heynemann, 1863 represented as Anadenus Heynemann, 1863 (basis of record)