Sonorella simmonsi W.B. Miller, 1966
Micrarionta sodalis (H. Hemphill, 1901)
Helminthoglypta sonoma H.A. Pilsbry, 1937
Helminthoglypta stageri G. Willett, 1938
Micrarionta sternsiana (K.T. Menke, 1829)
Septipellis stigmatica (L. Pfeiffer, 1861)
Helminthoglypta stiversiana (J.G. Cooper, 1876)
Polymita sulphurosa (P.M.A. Morelet, 1849)
Polymita sulphurosa albida C. de la Torre, 1950
Polymita sulphurosa flammulata C. de la Torre, 1950
Polymita sulphurosa rubra C. de la Torre, 1950
Polymita sulphurosa viridis C. de la Torre, 1950
Sonorella superstitionis H.A. Pilsbry, 1939
Helminthoglypta talmadgei B. Roth, 1988
Helminthoglypta taylori D.M. Reeder & B. Roth,1988
Helminthoglypta tejonis S.S. Berry, 1930
Helminthoglypta thermimontis S.S. Berry, 1953
Sonorella todseni W.B. Miller, 1976
Sonorella torreonica E. Naranjo-Garcia, 1989
Sonorella tortillita H.A. Pilsbry & J.H. Ferriss,1919
Helminthoglypta traskii (W. Newcomb, 1861)
Helminthoglypta traskii willetti (S.S. Berry, 1920)
Sonorella tryoniana H.A. Pilsbry & J.H. Ferriss,1923
Helminthoglypta tudiculata (A. Binney, 1843)
Helminthoglypta tudiculata angelena S.S. Berry, 1938
Helminthoglypta tudiculata imperforata H.A. Pilsbry, 1939
Helminthoglypta tularensis H. Hemphill, 1892
Helminthoglypta tularensis sequoia H.A. Pilsbry, 1928
Sonorella tumacacori H.A. Pilsbry & J.H. Ferriss,1919
Sonorella tumamocensis H.A. Pilsbry & J.H. Ferriss,1915
Helminthoglypta umbilicata H.A. Pilsbry, 1898
Helminthoglypta uvasana B. Roth & F.G. Hochberg,1992
Polymita varians (K.T. Menke, 1829)
Helminthoglypta vasquezi B. Roth & F.G. Hochberg,1992
Helminthoglypta venturensis P. Bartsch, 1916