Gyraulus lendli (Š. Brusina, 1902)
Planorbis leonatus T. Iredale, 1943
Ferrissia leonensis M. Connolly, 1928
Physopsis leroyi A. Grandidier, 1887
Hebetancylus lesueurii (A.V.M.D. D'Orbigny,1842)
Gundlachia leucaspis (C.M.F. Ancey, 1901)
Anisus leucostoma (P.A. Millet, 1813)
Helicorbis levanidovae F. Zatrawkin& I.M. Moskvicheva in F. Zatrawkin, 1985
Ferrissia lhotelleriei B. Walker, 1914
Polypylis likharevi Y.I. Starobogatov& E.A. Streletzkaja, 1967
Drepanotrema limayanum (R.P. Lesson, 1830)
Seminolina lindae (FOSSIL) E.J. Petuch, 1991 †
Camptoceras lindholmi Y.I. Starobogatov& L.A. Prozorova, 1990
Choanomphalus lindholmi J. Beckmann& Y.I. Starobogatov, 1975
Camptoceras lineatum W.T. Blanford, 1871
Gyraulus lineolatus (Š. Brusina, 1878)
Bulinus liratus H.B. Tristram, 1863
Gyraulus lluecai (Royo Gómez, 1922)
Segmentina loczyi (FOSSIL) (Lörenthey, 1906 †)
Hebetancylus longiptera I.I. Akimushkin, 1963
Gyraulus lorentheyi (Š. Brusina, 1902 )
Gundlachia lucasi H.H. Suter, 1905
Drepanotrema lucidum (L. Pfeiffer, 1839)
Gyraulus ludovici (Noulet, 1854 )
Pyrgophysa ludoviciana (H. Mittre, 1841)
Gyraulus luguhuensis F.Y. Shu, F. Köhler, C.C. Fu& H.Z. Wang, 2013
Gundlachia lutzi B. Walker, 1925
Gyraulus lychnidicus P. Hesse, 1928
Choanomphalus maacki (G. Gerstfeldt, 1859)
Planorbis macedonicus R. Sturany, 1894
Gyraulus macquariensis E.A. Smith, 1882
Planorbella magnifica H.A. Pilsbry, 1903
Ancylus major A. Issel, 1865
Segmentina malkae N.D. Kruglov& E.V. Soldatenko, 1997
Physastra mamillata (G.B. Sowerby, 1874)