Helisoma (Pierosoma) Dall, 1905 accepted as Planorbella (Pierosoma) Dall, 1905 represented as Planorbella Haldeman, 1843 (basis of record)
Helisoma (Pierosoma) trivolvis (Say, 1817) accepted as Planorbella trivolvis (Say, 1817) (basis of record)
Helisoma (Pierosoma) trivolvis subcrenatum (P. P. Carpenter, 1857) accepted as Planorbella subcrenata (P. P. Carpenter, 1857) (basis of record)
Helisoma anceps royalense (B. Walker, 1909) (additional source)
Helisoma anceps rushi F. C. Baker, 1939 accepted as Helisoma anceps royalense (B. Walker, 1909) (source of synonymy)
Helisoma antrosa (Conrad, 1834) accepted as Helisoma anceps (Menke, 1830) (source of synonymy)
Helisoma campanulatum collinsi F. C. Baker, 1939 accepted as Planorbella campanulata collinsi (F. C. Baker, 1939) (basis of record)
Lymnaea bulimoides f. alberta (F. C. Baker, 1919) accepted as Galba alberta F. C. Baker, 1919 (basis of record)
Lymnaea stagnalis appressa (Say, 1821) accepted as Lymnaea appressa (Say, 1821) (additional source)
Physa jennessi athearni A. H. Clarke, 1973 accepted as Physella gyrina (Say, 1821) (original description)
Planorbis antrosus Conrad, 1834 accepted as Helisoma anceps (Menke, 1830) (source of synonymy)
Sphaerium (Herringtonium) A. H. Clarke, 1973 represented as Sphaerium Scopoli, 1777 (original description)
Valvata sincera danielsi B. Walker, 1906 (basis of record)
Valvata sincera helicoidea Dall, 1905 accepted as Valvata helicoidea Dall, 1905 (basis of record)
Valvata sincera nylanderi Dall, 1905 (additional source)
Valvata sincera ontariensis F. C. Baker, 1931 accepted as Valvata lewisi ontariensis F. C. Baker, 1931 (basis of record)
Valvata sincera sincera Say, 1824 (additional source)
Valvata tricarinata (Say, 1817) (additional source)
Valvata tricarinata var. basalis Vanatta, 1915 accepted as Valvata tricarinata (Say, 1817) (source of synonymy)
Valvata tricarinata var. infracarinata Vanatta, 1915 accepted as Valvata tricarinata (Say, 1817) (source of synonymy)
Valvata tricarinata var. mediocarinata F. C. Baker, 1928 accepted as Valvata tricarinata (Say, 1817) (source of synonymy)
Valvata tricarinata var. perconfusa B. Walker, 1917 accepted as Valvata tricarinata (Say, 1817) (source of synonymy)
Valvata tricarinata var. simplex A. Gould, 1841 accepted as Valvata tricarinata (Say, 1817) (source of synonymy)
Valvata unicarinata De Kay, 1843 accepted as Valvata tricarinata (Say, 1817) (source of synonymy)

 Synonymy

 for Valvata lewisi Currier, 1868

Clarke [1973: 222] consider Valvata lewisi a junior synonym of Valvata sincera [details]

 Taxonomy

 for Valvata sincera danielsi B. Walker, 1906

According to Clarke [1973: 225], "it is probably a valid taxon", however, the subsequent North American authors do ... [details]

 Type locality

 for Helisoma anceps (Menke, 1830)

USA, Virginia [details]

 Type material

 for Helisoma anceps (Menke, 1830)

Lost [details]