Circlotoma callusa C.F. Laseron, 1958 Northern Territory
Teinostoma calvertense (FOSSIL) Martin, 1904 †
Vitrinella campylochila H.A. Pilsbry& A.A. Olsson, 1952 Panama, Los Santos Peninsula
Vitrinella canaliculata F. Rubio, R. Fernández-Garcés& E. Rolán, 2011 Florida, Palm Beach County
Tornus cancellatus W. Adam & J. Knudsen,1969
Teinostoma cansadoi W. Adam & J. Knudsen,1969
Vitrinella caperata (R. Tate, 1899) Gabon, Cap Esterias
Tornus caraboboensis (N.E. Weisbord, 1962) Brazil
Teinostoma carbonnieri F.P. Jousseaume, 1881
Ponderinella cardosi E. Rolán & F. Rubio, 2002 Ivory coast, Abidjan
Solariorbis carianus H.A. Pilsbry& A.A. Olsson, 1952 Peru, Lima
Vitrinella carinata (A.V.M.D. D'Orbigny,1842) Caribbean
Tholostoma carinata C.F. Laseron, 1958
Teinostoma carinatum (FOSSIL) d'Orbigny, 1911 †
Tornus carinatus (A. Adams, 1863) Myanmar
Solariorbis carinatus (P.P. Carpenter, 1857)
Teinostoma carinicallus H.A. Pilsbry& J.T.L. McGinty, 1946
Vitrinella carinifex W.H. Dall, 1927 USA, Georgia
Solariorbis carinulatus (P.P. Carpenter, 1857) Mexico, Mazatlan
Ponderinella carlosi E. Rolán & F. Rubio, 2002 East Atlantic
Teinostoma caronensis (FOSSIL) W.C. Mansfield, 1925 † Trinidad and Tobago
Teinostoma carpenteri A. Adams, 1861 Gabon, Sao Tomé Island
Cochliolepis catherinae K.H. Barnard, 1958 South Africa
Teinostoma cecinella W.H. Dall, 1919 Mexico, Magdalena Bay
Cyclostremiscus cerrosensis (P. Bartsch, 1907) West America
Idioraphe chipolanum (FOSSIL) (W.H. Dall, 1892 †) Mexico, Veracruz, Jesús Carranza
Circulus choshiensis T. Habe, 1961 China, Zhejiang4 mm
Teinostoma cienfuegosense F. Rubio, R. Fernández-Garcés& E. Rolán, 2011
Lydiphnis cincta (P.P. Carpenter, 1857) West America
Vitrinella cingulata (R.A. Philippi, 1852) USA, Georgia
Pterolabrella cingulata (FOSSIL) (J.A. Bartrum, 1919 †)
Circulus cinguliferus (A. Adams, 1850) South Africa, Natal, Durban Bay2,1 mm
Teinostoma ciskae M.J. Faber, 1995 Bahamas
Aorotrema cistronium (W.H. Dall, 1889) Belize
Solariorbis clara (FOSSIL) N.F. Sohl, 1960 † USA, Georgia, Clay