Exiligada montejinni F. Criscione, A. Law& F. Köhler, 2012 Australia, Montejinni
Amphidromus montesdeocai Thach & F. Huber, 2017
Amplirhagada montesquieuana F. Köhler, 2010 Western Australia, Kimberley
Torresitrachia monticola T. Iredale, 1939 Western Australia
Amplirhagada moraniana F. Köhler, 2011 Western Australia, Kimberley
Trozena morata T. Iredale, 1938 Australia, Cairns11 mm
Obba moricandi L. Pfeiffer, 1842 Malaysia, Borneo30 mm
Obba moricandi brunnescens O.F. von Möllendorff,1892 Philippines, Batanes Island24,4 mm
Neocepolis morleti (P. Dautzenberg& d'Hamonville, 1887) Vietnam, Tonkin20 mm
Sphaerospira mortenseni T. Iredale, 1929 Australia, Livingstone42 mm
Sphaerospira mossmani (J.W. Brazier, 1875) Queensland
Papuina motacella L. Pfeiffer Solomon Islands19 mm
Amphidromus mouhoti (L. Pfeiffer, 1861) Laos
Sphaerospira mourilyani (J.W. Brazier, 1875) Australia. Kurrimine Beach38 mm
Ramogenia mucida (L. Pfeiffer, 1857)
Trachiopsis mucosa (J.C. Cox, 1868) Australia, Logan Village7 mm
Figuladra muirorum J. Stanisic, 2010 Australia, Marlborough33,9 mm
Papuina multizona (R.P. Lesson, 1831) Papua New Guinea38 mm
Amphidromus mundus (L. Pfeiffer, 1853) Malaysia39,1 mm
Sinumelon musgravesi G.A. Solem, 1993 Australia, Musgrave Ranges
Tatemelon musgum (T. Iredale, 1937) South Australia
Satsuma myomphala (E.C. Von Martens, 1865) Japan, Nozu33 mm
Satsuma myomphala euomphala H.A. Pilsbry & Y. Hirase,1908 Japan29,5 mm
Satsuma myomphala okinoshimana H.A. Pilsbry & Y. Hirase,1904 Japan34,9 mm
Papuina mysolensis (L. Pfeiffer, 1862) Indonesia39,5 mm
Satsuma nakayamai J.T. Kuroda & H. Minato,1975 Japan15,7 mm
Austrochloritis nambucca T. Iredale, 1943 New South Wales
Australocosmica nana F. Criscione & F. Köhler,2013
Amplirhagada napierana G.A. Solem, 1981 Australia, Napier Range18 mm
Figuladra narelleae J. Stanisic& D.G. Potter, 2010 Australia, Brigalow Belt36,7 mm
Rhynchotrochus naso (E.C. Von Martens, 1883) Papua New Guinea26 mm
Chloritis nasuta A.R.J.B. Bavay& P. Dautzenberg, 1909 Vietnam, Muong-Hum13 mm
Polydontes natensoni C. de la Torre, 1938 Cuba55,3 mm
Camaena naujanica J.G. Hidalgo, 1887 Philippines, Mindoro Island48,5 mm
Exiligada negriensis T. Iredale, 1939 Australia, Victoria Bonaparte