• Bulla (Hydatina) Schumacher, 1817 accepted as Hydatina Schumacher, 1817
• Bulla (Hydatina) crebristriata H. Woodward, 1879 † accepted as Hydatina crebristriata (H. Woodward, 1879) †
• Hyalinia (Hydatina) Westerlund, 1886 accepted as Mediterranea Clessin, 1880
• Hydatina Ehrenberg, 1830 accepted as Epiphanes Ehrenberg, 1832
• Hydatina Schumacher, 1817
• Hydatina Westerlund, 1886 accepted as Mediterranea Clessin, 1880
• Hydatina albocincta (van der Hoeven, 1839)
• Hydatina amplustre (Linnaeus, 1758)
• Hydatina aplustre [sic] accepted as Aplustrum amplustre (Linnaeus, 1758) represented as Hydatina amplustre (Linnaeus, 1758)
• Hydatina brachydactyla Ehrenberg, 1834 (uncertain > taxon inquirendum)
• Hydatina chilensis Schmarda, 1859 (uncertain > taxon inquirendum)
• Hydatina cinctoria (Perry, 1811) accepted as Hydatina zonata ([Lightfoot], 1786)
• Hydatina circulata (Martyn, 1789) accepted as Hydatina zonata ([Lightfoot], 1786)
• Hydatina crebristriata (H. Woodward, 1879) †
• Hydatina exigua Hedley, 1912 accepted as Noalda exigua (Hedley, 1912)
• Hydatina eximia (Deshayes, 1863) accepted as Micromelo scriptus (Garrett, 1857)
• Hydatina exquisita Voskuil, 1995
• Hydatina fasciata (Bruguière, 1792)
• Hydatina filosa Schumacher, 1817 accepted as Hydatina physis (Linnaeus, 1758)
• Hydatina gibba Ehrenberg, 1830 accepted as Pleurotrocha gibba (Ehrenberg, 1830)
• Hydatina inflata Dunker, 1877 accepted as Hydatina zonata ([Lightfoot], 1786)
• Hydatina laticauda Ehrenberg, 1832 (uncertain > taxon inquirendum)
• Hydatina leptocerca Ehrenberg, 1832 (uncertain > taxon inquirendum)
• Hydatina macrognatha Schmarda, 1859 (uncertain > taxon inquirendum)
• Hydatina monops Hilgendorf, 1899 (uncertain > taxon inquirendum)
• Hydatina montillai Delsaerdt, 1996
• Hydatina nitidula G. B. Sowerby II, 1868 (uncertain > taxon inquirendum)
• Hydatina oblonga Daday, 1908 (uncertain > taxon inquirendum)
• Hydatina physis (Linnaeus, 1758)
• Hydatina physis f. vesicaria ([Lightfoot], 1786) accepted as Hydatina vesicaria ([Lightfoot], 1786)
• Hydatina stroemfeldi [sic] accepted as Hydatina vesicaria ([Lightfoot], 1786)
• Hydatina stromfelti Odhner, 1932 accepted as Hydatina vesicaria ([Lightfoot], 1786)
• Hydatina terminalis Ehrenberg, 1832 (uncertain > taxon inquirendum)
• Hydatina tetraodon Schmarda, 1859 (uncertain > taxon inquirendum)
• Hydatina velum (Gmelin, 1791) accepted as Hydatina zonata ([Lightfoot], 1786)
• Hydatina verrilli Pilsbry, 1949 accepted as Hydatina vesicaria ([Lightfoot], 1786)
• Hydatina vesicaria ([Lightfoot], 1786)
• Hydatina vexillum G. B. Sowerby II, 1868 accepted as Hydatina zonata ([Lightfoot], 1786)
• Hydatina zonata ([Lightfoot], 1786)