觿螺屬（學名：）是一種在鹹淡水交界生活，體型非常小的觿螺科淡水腹足綱軟體動物。本屬物種相對比較原始，有鰓和螺厣。

物種
以下為本屬的物種：

 † Hydrobia abbreviata (Grateloup, 1827) 
 † Hydrobia acheila Brusina, 1902 
 Hydrobia aciculina (Bourguignat, 1876)
 Hydrobia acuta (Draparnaud, 1805)
 subspecies Hydrobia acuta neglecta Muus, 1963 - synonym: Hydrobia neglecta Muus, 1963
 † Hydrobia acutecarinata Neumayr in Neumayr & Paul, 1875 
 † Hydrobia aitai Jekelius, 1932 
 † Hydrobia alpha Jekelius, 1944 
 † Hydrobia alutae Jekelius, 1932 
 † Hydrobia andreaei Boettger in Degrange-Touzin, 1892 
 † Hydrobia andrussowi Hilber, 1897 
 Hydrobia antarctica Philippi, 1868
 † Hydrobia aquitanica Degrange-Touzin, 1892 
 † Hydrobia atropida Brusina, 1892 
 † Hydrobia aturensis Noulet, 1854 
 † Hydrobia aurita Neumayr in Neumayr & Paul, 1875 
 † Hydrobia avisanensis Fontannes, 1877 
 † Hydrobia baltici Brusina, 1902 
 † Hydrobia banatica Jekelius, 1944 
 † Hydrobia barzaviae Jekelius, 1932 
 † Hydrobia bathyomphala Brusina, 1902 
 † Hydrobia bialozurkensis (Montpéreux, 1831) 
 † Hydrobia bicristata Simionescu & Barbu, 1940 
 † Hydrobia brusinai Wenz, 1919 
 † Hydrobia caerulescens (Gmelin, 1791) 
 † Hydrobia calderoni Royo Gómez, 1922 
 † Hydrobia carinata Gillet & Geissert, 1971 
 † Hydrobia cestasensis Cossmann & Peyrot, 1918 
 † Hydrobia cingulata Capellini, 1880 
 † Hydrobia cubillensis (Almera & Bofill y Poch, 1895) 
 † Hydrobia detracta Jekelius, 1944 
 † Hydrobia ditropida Brusina, 1892 
 Hydrobia djerbaensis Wilke, Pfenninger & Davis, 2002
 † Hydrobia dollfusi Wenz, 1913 
 † Hydrobia draparnaldii (Nyst, 1836) 
 † Hydrobia dubuissoni (Bouillet, 1834) 
 † Hydrobia effusa (Frauenfeld in Hörnes, 1856)
 † Hydrobia enikalensis Kolesnikov, 1935 
 † Hydrobia euryomphala (Bourguignat, 1876)
 † Hydrobia falsani (Fontannes, 1876) 
 † Hydrobia fischeri (Hermite, 1879) 
 † Hydrobia fraasi (Blanckenhorn, 1897) 
 † Hydrobia frauenfeldi (Hörnes, 1856) 
 † Hydrobia friedbergi Simionescu & Barbu, 1940 
 † Hydrobia gibba (Braun in Walchner, 1851) 
 † Hydrobia girondica Boettger in Degrange-Touzin, 1892 
 Hydrobia glaucovirens (Melvill & Ponsonby, 1896)
 Hydrobia glyca (Servain, 1880)
 † Hydrobia gracilis (Rolle, 1860) 
 † Hydrobia grandis Cobălcescu, 1883 
 † Hydrobia gregaria (Schlotheim, 1820) 
 † Hydrobia hermitei Wenz, 1919 
 † Hydrobia hoernesi Friedberg, 1923 
 † Hydrobia inflata (Pusch, 1837) 
 Hydrobia knysnaensis (Krauss, 1848)
 † Hydrobia kubanica Zhizhchenko, 1936 
 Hydrobia lactea (Küster, 1852)
 † Hydrobia limnicola (Rolle, 1860) 
 † Hydrobia lineata Jekelius, 1944 
 † Hydrobia longaeva Neumayr in Neumayr & Paul, 1875 
 † Hydrobia metochiana Pavlović, 1932 
 † Hydrobia minutissima (Grateloup, 1838) 
 † Hydrobia moesiacensis Jekelius, 1944 
 † Hydrobia morasensis Fontannes, 1883 
 † Hydrobia morgani Morgan, 1920 
 † Hydrobia mucronata Jekelius, 1944 
 † Hydrobia nannacus Kadolsky, 2008 
 † Hydrobia obtusa (Sandberger, 1858) 
 † Hydrobia onuri Taner, 1974 
 † Hydrobia paludinaria (Schlotheim, 1820) 
 † Hydrobia peregrina Boettger, 1901 
 † Hydrobia pisana Wenz, 1924 
 † Hydrobia planata (Montpéreux, 1831) 
 † Hydrobia podolica Łomnicki, 1886 
 † Hydrobia politioanei Jekelius, 1944 
 † Hydrobia polytropida Brusina, 1892 
 † Hydrobia pontilitoris Wenz, 1942 
 † Hydrobia procera (Mayer, 1864) 
 † Hydrobia protracta (Eichwald, 1853) 
 † Hydrobia pseudocaspia Sinzov in Davitashvili, 1932 
 † Hydrobia pseudocornea Brusina, 1902 
 † Hydrobia punctum (Eichwald, 1853) 
 † Hydrobia pupa (Sacco, 1895)
 † Hydrobia pupula Brusina, 1874 
 † Hydrobia radmanyestensis Wenz, 1925 
 † Hydrobia reinachi Boettger in Reinach, 1894 
 † Hydrobia rhodiensis Tournouër in Fischer, 1877 
 † Hydrobia romani Royo Gómez, 1922 
 † Hydrobia rossii Brusina, 1878 †
 † Hydrobia royoi Robles & Goy, 1972 
 † Hydrobia sacyi Cossmann & Peyrot, 1918
 † Hydrobia santrici Pavlović, 1935 
 † Hydrobia schlosseri Royo Gómez, 1928 
 † Hydrobia semiconvexa Sandberger, 1875 
 † Hydrobia septemlineata Łomnicki, 1886 
 † Hydrobia simplex (Fuchs, 1877) 
 † Hydrobia sinjana Brusina, 1897 
 † Hydrobia slavonica Brusina, 1874 
 † Hydrobia soceni Jekelius, 1944 
 † Hydrobia spicula Stefanescu, 1896 
 † Hydrobia stavropoliana Zhizhchenko, 1936 
 † Hydrobia striatella (Grateloup, 1838) 
 † Hydrobia subconoidalis Morgan, 1920 
 † Hydrobia subprotracta Zhizhchenko, 1936 
 † Hydrobia substriatula Sinzov, 1880 
 † Hydrobia subsuturata Jekelius, 1944 
 † Hydrobia subventrosa Gottschick, 1921 
 † Hydrobia sulculata Sandberger, 1875 
 † Hydrobia syrmica Neumayr in Neumayr & Paul, 1875 
 † Hydrobia tarchanensis Zhizhchenko, 1936 
 † Hydrobia timisiensis Jekelius, 1944 
 † Hydrobia tournoueri Sandberger, 1875 
 † Hydrobia trochulus Sandberger, 1875 
 † Hydrobia turrita (Grateloup, 1827) 
 † Hydrobia uiratamensis Kolesnikov, 1935 
 † Hydrobia vitrella Stefanescu, 1896 

異名
 Hydrobia anatolica Schütt, 1965: synonym of Graecoanatolica anatolica (Schütt, 1965)
 Hydrobia atuca Boeters, 1988: synonym of Ecrobia ventrosa (Montagu, 1803)
 Hydrobia compacta Jeffreys, 1884 : synonym of Barleeia gougeti (Michaud, 1830)
 Hydrobia costaricensis Mörch, 1860: synonym of Aroapyrgus costaricensis (Mörch, 1860)
 † Hydrobia elongata carinulata Wenz, 1913: synonym of † Hydrobia gregaria (Schlotheim, 1820)
 Hydrobia eutrepha Paladilhe, 1867: synonym of Bythinella eutrepha (Paladilhe, 1867)
 Hydrobia georgiana Pfeffer, 1886: synonym of Eatoniella georgiana (Pfeffer, 1886)
 Hydrobia jenkinsi E. A. Smith, 1889: synonym of Potamopyrgus antipodarum (Gray, 1843)
 Hydrobia joossei van Aartsen, Menkhorst & Gittenberger, 1984: synonym of Hydrobia glyca (Servain, 1880)
 Hydrobia limosa (Preston, 1915) : synonym of Littoridina limosa Preston, 1915
 Hydrobia longiscata (Bourguignat, 1856) : synonym of Semisalsa longiscata (Bourguignat, 1856)
 Hydrobia maritima Milaschewitsch, 1916: synonym of Ecrobia maritima (Milaschewitsch, 1916)
 Hydrobia miliacea G. Nevill, 1880: synonym of Gangetia miliacea (G. Nevill, 1880)
 Hydrobia minuta Totten : synonym of Ecrobia truncata (Vanatta, 1924)
 Hydrobia neglecta Muus, 1963: synonym of Hydrobia acuta neglecta Muus, 1963
 Hydrobia pamphylica Schütt, 1964: synonym of Graecoanatolica pamphylica (Schütt, 1964)
 Hydrobia pontieuxini Radoman, 1973: synonym of Ecrobia maritima (Milaschewitsch, 1916)
 Hydrobia procerula (Paladilhe, 1869): synonym of Hydrobia acuta acuta (Draparnaud, 1805)
 Hydrobia pumilio E. A. Smith, 1875: synonym of Laevilacunaria antarctica (Martens, 1885)
 Hydrobia salsa (Pilsbry, 1905): synonym of Spurwinkia salsa (Pilsbry, 1905)
 Hydrobia scamandri (Boeters, Monod & Vala, 1977): synonym of Semisalsa stagnorum (Gmelin, 1791)
 Hydrobia seemani Frauenfeld, 1863: synonym of Tryonia seemani (Frauenfeld, 1863)
 Hydrobia stagnalis Baster, 1765 : synonym of  Heleobia stagnorum (Gmelin, 1791)
 Hydrobia stagnorum (Gmelin, 1791) : synonym of Heleobia stagnorum (Gmelin, 1791)
 Hydrobia steinii Martens, 1858: synonym of Marstoniopsis steinii (Martens, 1858)
 Hydrobia striata (d'Orbigny, 1840): synonym of Onoba amissa Ponder & Worsfold, 1994
 Hydrobia totteni Morrison, 1954 : synonym of Ecrobia truncata (Vanatta, 1924)
 Hydrobia truncata (Vanatta, 1924): synonym of Ecrobia truncata (Vanatta, 1924)
 Hydrobia turbinata Petterd, 1889: synonym of Ascorhis victoriae (Tenison-Woods, 1878)
 Hydrobia ulvae (Pennant, 1777): synonym of Peringia ulvae (Pennant, 1777)
 Hydrobia vegorriticola Schütt, 1962: synonym of Graecoanatolica vegorriticola (Schütt, 1962)
 Hydrobia ventrosa (Montague, 1803) : synonym of Ecrobia ventrosa (Montagu, 1803)
 Hydrobia victoriae (Tenison Woods, 1878): synonym of Ascorhis victoriae (Tenison-Woods, 1878)

參考文獻

 Taylor, J.D. (1973). Provisional list of the mollusca of Aldabra Atoll.
 Eneman, E. (1984). Uit het Natuurhistorisch Archief [From the Natural History Archive]. De Strandvlo 4(1): 4-17 
 Vaught, K.C. (1989). A classification of the living Mollusca. American Malacologists: Melbourne, FL (USA). . XII, 195 pp. 
 Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 180-213
 Rolán E., 2005. Malacological Fauna From The Cape Verde Archipelago. Part 1, Polyplacophora and Gastropoda

觿螺科