Mendana longicaulis H.B. Baker, 1938
Euconulus longus H.A. Pilsbry & Y. Hirase
Euconulus lubricellus C.M.F. Ancey, 1904
Hiona lymanniana (C.M.F. Ancey, 1893)
Philonesia mangarevae H.B. Baker, 1940
Philonesia mapulehuae H.B. Baker, 1940
Palaua margaritacea (C.G. Semper)
Habroconus martinezi (J.G. Hidalgo, 1869)
Diastole matafaoi unknown
Microcystis mathewsi H.B. Preston, 1913
Philonesia maunalei H.B. Baker, 1940
Habroconus mayi (F.C. Baker, 1914)
Hiona megodonta H.B. Baker, 1940
Hiona meineckei H.B. Baker, 1940
Guppya miamiensis H.A. Pilsbry, 1903
Guppya micans (G.F. Angas, 1879)
Guppya micra H.A. Pilsbry, 1904
Coneuplecta microconus (A. Mousson, 1865)
Discoconulus microdiscus (O.W.H. Reinhardt, 1877)
Hiona milolii H.B. Baker, 1940
Lamprocystis misella (A.E.J. Férussac, 1821)
Coneuplecta miyanagai J.T. Kuroda & M. Hukuda,1944
Philonesia mokuleiae H.B. Baker, 1940
Microcystis monspittensis H.B. Preston, 1913
Guppya montanicola W.H. Dall, 1926
Coneuplecta nanodes G.P.L.K. Gude, 1900
Tengchiena nepeanensis (J.W. Brazier, 1876)
Palaua ngarduaisi H.B. Baker, 1941
Coneuplecta niijimana H.A. Pilsbry & Y. Hirase,1903
Coneuplecta nijimana H.A. Pilsbry & Y. Hirase,1903
Kororia nitida (H.A. Pilsbry & Y. Hirase,1905)
Tengchiena normalis (T. Iredale, 1933)
Suterella novarae (L. Pfeiffer, 1862)
Greenwoodoconcha nux (E.R. Sykes, 1900)
Philonesia oahuensis (C.M.F. Ancey, 1889)