Discula lyelliana R.T. Lowe, 1852 Portugal, Madeira
Monacha maasseni B. Hausdorf, 2003 Greece, Rodos
Helicella macedonica P. Hesse, 1928 Bulgaria10,2 mm
Ochtephila madeirensis (W. Wood, 1828) Portugal, Madeira5 mm
Ochtephila madeirensis taeniata (P.B. Webb& S. Berthelot, 1833) Portugal, Madeira7,1 mm
Xerotricha madritensis (J.P. Rambur, 1868) Spain, Barcelona7,8 mm
Monacha magna B. Hausdorf, 2000 Turkey
Harmozica maiae (V. Hüdec& G.I. Lezhawa, 1969) Turkey
Kokotschashvilia makvalae (V. Hüdec& G.I. Lezhawa, 1969) Caucasus
Monacha margarita B. Hausdorf, 2000 Algeria
Xerotricha mariae (L. Gasull, 1974) Spain, Almeria
Candidula marocana J. Ahuir Galindo, 2014 Morocco, cap Cantin10,69 mm
Xerosecta marteli (P.M. Pallary, 1920) Morocco, cap Cantin15 mm
Monacha martensiana N. Tiberi, 1869 Italy, Marche18 mm
Ponentina martigena (A.E.J. Férussac, 1832) Spain, Ferrol7 mm
Trichia martorelli J.R. Bourguignat, 1870 France4,3 mm
Helicopsis martynovi N. Gural-Sverlova, 2010 Ukraine
Hiltrudia mathildae (C.A. Westerlund, 1881) Croatia8,9 mm
Trichia matorelli (J.R. Bourguignat, 1878) Spain, Barcelona
Xerosecta mauretanica (J.R. Bourguignat, 1880) Morocco, cap Cantin16 mm
Candidula mayeri (G.P.L.K. Gude, 1914) Australia, Victoria
Trochoidea meda (C. Porro, 1840) Italy, Lecce9 mm
Leuchrochroa melillensis (P.M. Pallary, 1898) Spain, Melilla12 mm
Monacha melitenensis P. Hesse, 1915 Iraq
Leptaxis membranacea R.T. Lowe, 1852 Azores
Trichia memnonis R. Sturany, 1904 Turkey
Caucasocressa menkhorsti B. Hausdorf, 2003 Turkey, Erzincan
Monacha menkhorsti B. Hausdorf, 2000 Turkey11 mm
Monacha merssinae A. Mousson, 1874 Turkey, Tasucu6,68 mm
Leucozonella mesoleuca (E.C. Von Martens, 1882) Kyrgyzstan
Xeropicta mesopotamica (A. Mousson, 1874)
Xerocrassa mesostena (C.A. Westerlund, 1879) Greece, Crete
Monacha messenica (C.A. Westerlund& H. Blanc, 1879) Greece
Leucozonella mica (N.L. Tzvetkova, 1950) Kazakhstan
Lemniscia michaudi (G.P. Deshayes, 1830) Portugal, Madeira6,7 mm