Eremarionta immaculata G. Willett, 1937
Sonorella imperatrix H.A. Pilsbry, 1939
Sonorella imperialis H.A. Pilsbry & J.H. Ferriss,1923
Greggelix indigena (J.F. Mabille, 1895)
Eremarionta indioensis (L.G. Yates, 1890)
Helminthoglypta inglesi S.S. Berry, 1938
Herpeteros inglesiana (S.S. Berry, 1928)
Sonorella insignis H.A. Pilsbry & J.H. Ferriss,1919
Helminthoglypta isabella S.S. Berry, 1938
Helminthoglypta jaegeri S.S. Berry, 1928
Helminthoglypta liodoma S.S. Berry, 1938
Greggelix loehrii (W.M. Gabb, 1867)
Rothelix lowei (P. Bartsch, 1918)
Sonorella macrophallus H.L. Fairbanks& D.M. Reeder, 1980
Sonorella madreana E. Naranjo-Garcia, 1989
Sonorella magdalenensis (R.E.C. Stearns, 1890)
Helminthoglypta mailliardi H.A. Pilsbry, 1927
Sonorella marmorarius H.A. Pilsbry & J.H. Ferriss,1919
Micrarionta mccoiana G. Willett, 1935
Sonorella meadi W.B. Miller, 1966
Sonorelix melanopylon (S.S. Berry, 1930)
Herpeteros merrilli (P. Bartsch, 1904)
Sonorella metcalfi W.B. Miller, 1976
Sonorella micra H.A. Pilsbry & J.H. Ferriss,1910
Helminthoglypta micrometalleoides W.B. Miller, 1970
Sonorelix micrometalleus (S.S. Berry, 1930)
Sonorella micromphala H.A. Pilsbry, 1939
Eremarionta millepalmarum S.S. Berry, 1930
Sonorella milleri C.C. Christensen& D.M. Reeder, 1981
Helminthoglypta misiona R. Chase, 1937
Helminthoglypta mohaveana S.S. Berry, 1927
Helminthoglypta montezuma D.M. Reeder & W.B. Miller,1986
Sonorella montezuma H.A. Pilsbry & J.H. Ferriss,1919
Sonorella mormonorum H.A. Pilsbry, 1948
Eremarionta morongoana S.S. Berry, 1929