• Ancylus drouetianus Bourguignat, 1862 accepted as Williamia gussoni (Costa O. G., 1829)
• Ancylus gibbosus Bourguignat, 1862 accepted as Williamia gussoni (Costa O. G., 1829)
• Ancylus gussoni O. G. Costa, 1829 accepted as Williamia gussoni (Costa O. G., 1829)
• Gyraulus deflectus (Say, 1824)
• Helisoma anceps (Menke, 1830)
• Helisoma campanulatum (Say, 1821) accepted as Planorbella campanulata (Say, 1821)
• Ladislavella arctica (I. Lea, 1864)
• Ladislavella catascopium (Say, 1817)
• Lymnaea arctica I. Lea, 1864 accepted as Ladislavella arctica (I. Lea, 1864)
• Lymnaea palustris (O. F. Müller, 1774) accepted as Stagnicola palustris (O. F. Müller, 1774)
• Lymnaea peregra (O. F. Müller, 1774) accepted as Radix peregra (O. F. Müller, 1774) accepted as Peregriana peregra (O. F. Müller, 1774)
• Lymnaea stagnalis (Linnaeus, 1758)
• Peregriana labiata (Rossmässler, 1835) (taxon inquirendum)
• Peregriana peregra (O. F. Müller, 1774)
• Physa acuta Draparnaud, 1805 accepted as Physella acuta (Draparnaud, 1805)
• Physa ancillaria Say, 1825 accepted as Physella ancillaria (Say, 1825)
• Physella acuta (Draparnaud, 1805)
• Physella ancillaria (Say, 1825)
• Planorbella campanulata (Say, 1821)
• Planorbis (Planorbis) planorbis (Linnaeus, 1758) represented as Planorbis planorbis (Linnaeus, 1758)
• Planorbis planorbis (Linnaeus, 1758)
• Radix auricularia (Linnaeus, 1758)
• Radix labiata (Rossmässler, 1835) accepted as Peregriana labiata (Rossmässler, 1835)
• Radix peregra (O. F. Müller, 1774) accepted as Peregriana peregra (O. F. Müller, 1774)
• Stagnicola arctica (I. Lea, 1864) accepted as Ladislavella arctica (I. Lea, 1864)
• Stagnicola catascopium (Say, 1817) accepted as Ladislavella catascopium (Say, 1817)
• Stagnicola palustris (O. F. Müller, 1774)