Sonorelix borrogoensis ora (G. Willett, 1929)
Sonorella bowiensis H.A. Pilsbry, 1905
Sonorella bradshaveana W.B. Miller, 1984
Polymita brocheri Gutiérrez in L. Pfeiffer,1864
Polymita brocheri cuestana C. de la Torre, 1950
Polymita brocheri ovandoi C. de la Torre, 1950
Eremarionta brunnea G. Willett, 1935
Sonorella burgessi E. Naranjo-Garcia, 1988
Sonorella caerulifluminis H.A. Pilsbry & J.H. Ferriss,1919
Helminthoglypta californiensis (H.C. Lea, 1838)
Helminthoglypta callistoderma H.A. Pilsbry, 1917
Sonorella cananea E. Naranjo-Garcia, 1988
Micrarionta canescens (A. Adams& L.A. Reeve, 1848 or, 1850)
Helminthoglypta carpenteri (W. Newcomb, 1861)
Helminthoglypta caruthersi G. Willett, 1934
Sonorella cayetanensis H.A. Pilsbry & J.H. Ferriss,1919
Herpeteros chacei (G. Willett, 1940)
Micrarionta chocolata G. Willett, 1935
Sonorella christenseni H.L. Fairbanks& D.M. Reeder, 1980
Micrarionta chuckwallana G. Willett, 1929
Sonorella clappi (H.A. Pilsbry& J.H. Ferriss, 1915)
Helminthoglypta coelata P. Bartsch, 1916
Sonorella coloradoensis (R.E.C. Stearns, 1890)
Sonorella coltoniana H.A. Pilsbry, 1939
Sonorella compar H.A. Pilsbry, 1919
Helminthoglypta concolor B. Roth & F.G. Hochberg,1988
Helminthoglypta contracostae H.A. Pilsbry, 1895
Cryptostrakon corcovadensis M.G. Cuezzo, 1997
Helminthoglypta crotalina S.S. Berry, 1928
Helminthoglypta cuyama G.D. Hanna & A.G. Smith,1937
Rothelix cuyamacensis (H.A. Pilsbry, 1895)
Helminthoglypta cypreophila (W.G. Binney & T.B. Bland,1869)
Sonorella dalli P. Bartsch, 1904
Sonorella danielsi H.A. Pilsbry & J.H. Ferriss,1910
Sonorella delicata H.A. Pilsbry & J.H. Ferriss,1919