Bathia madagascariensis G.C. Robson, 1914 Madagascar
Dupontia maillardi (G.P. Deshayes, 1863) La Reunion Island
Nesonanina malleata B. Rensch Papua New Guinea
Helicarion masakii J.T. Kuroda, 1960 Japan
Helicarion mastersi J.C. Cox, 1868 Australia, Kiama13 mm
Helicarion mathewsi H.B. Preston, 1913 Norfolk Island
Wilhelminaia mathildae H.B. Preston, 1913 Brazil, Espirito Santo
Eungarion mcdonaldi J. Stanisic, 1993 Australia, Mackay
Nitor medioximus T. Iredale, 1941 Australia, Port Macquarie
Helicarion megastoma J.C. Cox, 1868 New South Wales
Geotrochus meristotrochus J.J. Vermeulen, M. Schilthuizen& T.S. Liew MS Malaysia, Borneo
Hemiglypta microglypta O.F. von Möllendorff,1893
Bekkochlamys micrograpta (H.A. Pilsbry, 1900) Japan, Hyogo
Mathewsoconcha microstriata H.B. Preston, 1913 Norfolk Island
Ctenophila milloti E. Fischer-Piette, F. Blanc& F. Salvat, 1975 Madagascar
Helicarion miranda T. Iredale, 1944 Australia, Lord Howe Island
Sivella montana (O.F. von Möllendorff,1901) Vietnam, Tonkin
Helicarion monticula J.T. Kuroda & J.M. Abe,1980 Japan, Tokushima
Rahula moolenbeeki W.J.M. Maassen, 2000
Orpiella mouelti Kae
Orpiella mouelti tawale Kae Fiji Islands29 mm
Helicarion mutsuensis Y. Hirase, 1908 Japan
Helicarion nachikoae J.T. Kuroda, 1953 Japan
Parakaliella nahaensis (G.P.L.K. Gude, 1900) Okinawa
Erepta nevilli A. Adams, 1867 Mauritius
Ctenoglypta newtoni (G. Nevill, 1871) Mauritius
Helicarion nigra J.R.C. Quoy& J.P. Gaimard, 1832 Australia, Victoria
Helicarion nikkoensis E. Sorita & M. Kawana,1983 Japan
Owaraha nissani R.K. Dell, 1955 New Zealand
Dupontia nitella (P.M.A. Morelet, 1868) Mauritius
Petalochlamys nitidus (H.A. Pilsbry& Y. Hirase, 1905) Taiwan
Orpiella nouleti (E.J. Le Guillou, 1842)
Nesonanina novaehiberniae (J.R.C. Quoy& J.P. Gaimard, 1832) Papua New Guinea, New Ireland
Helicarion novoguineensis E.A. Smith, 1887 Papua New Guinea
Laocaia obesa A.A. Kuzminykh, 1999 Vietnam, Tonkin