Galba (Bakerilymnaea) perpolita (Dall, 1905) represented as Galba perpolita (Dall, 1905) (basis of record)
Galba (Galba) modicella (Say, 1825) represented as Galba modicella (Say, 1825) (basis of record)
Galba (Galba) obrussa (Say, 1825) represented as Galba obrussa (Say, 1825) (basis of record)
Galba cockerelli (Pilsbry & Ferriss, 1906) (additional source)
Galba cyclostoma (B. Walker, 1908) (additional source)
Galba dalli (F. C. Baker, 1907) (additional source)
Galba exigua (I. Lea, 1841) (additional source)
Galba galbana (Say, 1825) (additional source)
Galba humilis (Say, 1822) (additional source)
Galba parva (I. Lea, 1841) (additional source)
Galba peninsulae (B. Walker, 1908) (additional source)
Galba perplexa (F. C. Baker & J. Henderson, 1929) (additional source)
Galba rustica (I. Lea, 1841) (additional source)
Galba sonomaensis (Hemphill, 1906) (additional source)
Galba tazewelliana (Wolf, 1870) (additional source)
Galba techella (Haldeman, 1867) (additional source)
Galba vancouverensis (F. C. Baker, 1939) (additional source)
Helisoma anceps anceps (Menke, 1830) (basis of record)
Helisoma anceps royalense (B. Walker, 1909) (basis of record)
Hinkleyia caperata (Say, 1829) (additional source)
Ladislavella arctica (I. Lea, 1864) (basis of record)
Ladislavella bonnevillensis (Call, 1884) (additional source)
Menetus H. Adams & A. Adams, 1855 (basis of record)
Menetus (Menetus) opercularis (A. Gould, 1847) represented as Menetus opercularis (A. Gould, 1847) (basis of record)
Menetus dilatatus (A. Gould, 1841) (additional source)
Menetus opercularis (A. Gould, 1847) (additional source)
Menetus sampsoni (Ancey, 1885) accepted as Dilatata sampsoni (Ancey, 1885) (additional source)
Planorbella (Seminolina) Pilsbry, 1934 represented as Planorbella Haldeman, 1843 (additional source)
Planorbella ammon (A. Gould, 1855) (additional source)
Planorbella binneyi (Tryon, 1867) (additional source)
Planorbella campanulata (Say, 1821) (additional source)
Planorbella campanulata campanulata (Say, 1821) (basis of record)
Planorbella campanulata collinsi (F. C. Baker, 1939) (basis of record)
Planorbella corpulenta (Say, 1824) (additional source)
Planorbella corpulenta corpulenta (Say, 1824) (basis of record)
Planorbella corpulenta vermilionense (F. C. Baker, 1929) (basis of record)
Planorbella corpulenta whiteavesi (F. C. Baker, 1932) (basis of record)
Planorbella magnifica (Pilsbry, 1903) (additional source)
Planorbella multivolvis (Case, 1847) (additional source)
Planorbella occidentalis (J. G. Cooper, 1870) (additional source)
Planorbella pilsbryi (F. C. Baker, 1926) (additional source)
Planorbella pilsbryi infracarinatum (F. C. Baker, 1932) (basis of record)
Planorbella pilsbryi pilsbryi (F. C. Baker, 1926) (basis of record)
Planorbella scalaris (Jay, 1839) (additional source)
Planorbella subcrenata (P. P. Carpenter, 1857) (additional source)
Planorbella trivolvis intertextum (G. B. Sowerby II, 1877) (basis of record)
Planorbella trivolvis trivolvis (Say, 1817) (basis of record)
Planorbella truncata (Miles, 1861) (additional source)
Stagnicola (Stagnicola) Jeffreys, 1830 represented as Stagnicola Jeffreys, 1830 (basis of record)
Stagnicola apicina (I. Lea, 1838) accepted as Ladislavella apicina (I. Lea, 1838) (basis of record)
Stagnicola catascopium (Say, 1817) accepted as Ladislavella catascopium (Say, 1817) (basis of record)
Stagnicola elodes (Say, 1821) accepted as Ladislavella elodes (Say, 1821) (additional source)
Stagnicola emarginata (Say, 1821) accepted as Ladislavella emarginata (Say, 1821) (basis of record)
Stagnicola exilis (I. Lea, 1834) accepted as Ladislavella exilis (I. Lea, 1834) (basis of record)