Bostryx longispira W.K. Weyrauch, 1960
Scutalus longitudinalis F. Haas, 1955
Naesiotus lopesi H.E.B. Rezende, P.D. Lanzieri& F. Inada, 1972
Drymaeus lophoicus (A.V.M.D. D'Orbigny,1835)
Bostryx louisae A.S.H. Breure, 1978
Mesembrinus loxanus (H.C. Higgins, 1872)
Mesembrinus loxensis (L. Pfeiffer, 1846)
Bostryx luridus (L. Pfeiffer, 1863)
Drymaeus lusorius L. Pfeiffer, 1855
Bostryx lychnorum (G.B. I Sowerby, 1838)
Naesiotus lycodus W.H. Dall, 1917
Drymaeus lynchi J.J. Parodíz, 1946
Cochlorina lyonetiana H.C. Küster, 1840
Scutalus macedoi W.K. Weyrauch, 1967
Oxychona maculata R.B. Salvador& D.C. Cavallari, 2013
Drymaeus magus (J.A. Wagner, 1827)
Drymaeus malleatus S.I. Da Costa, 1898
Drymaeus manoeli (S. Moricand, 1833)
Mesembrinus manupictus (L.A. Reeve, 1848)
Drymaeus marcapatensis A.S.H. Breure, 1979
Bulimulus marcidus L. Pfeiffer, 1853
Drymaeus marielinus F. Poey, 1851
Scutalus mariopenai A.S.H. Breure& V. Mogollón Avilla, 2010
Drymaeus marmarinus (A.V.M.D. D'Orbigny,1835)
Bulimulus marmatensis L. Pfeiffer, 1855
Bostryx martinezi M.I. Hylton-Scott, 1965
Auris maximiliana S. Moricand, 1836
Mesembrinus mayaorum H.A. Rehder, 1966
Drymaeus megastomus J.J. Parodíz, 1962
Bostryx megomphalus H.A. Pilsbry, 1944
Lissoacme mejillonensis (L. Pfeiffer, 1877)
Drymaeus melanoscolops W.L.H. Dohrn, 1882
Auris melanostoma (S. Moricand, 1836)
Auris melanostoma brachyplax H.A. Pilsbry, 1896
Auris melastoma (W.J. Swainson, 1820)