Naesiotus crepundia (A.V.M.D. D'Orbigny,1835) Bolivia26,6 mm
Scutalus cretaceus L. Pfeiffer, 1855 Peru
Newboldius crichtoni (W.J. Broderip, 1836) Peru, Huancabamba71,3 mm
Bulimus crossei L. Pfeiffer, 1862 Thailand36,8 mm
Bostryx crucilineatus W.K. Weyrauch, 1967 Peru, Lima
Naesiotus cucullinus W.H. Dall, 1917 Galapagos17,7 mm
Mesembrinus cucullus (P.M.A. Morelet, 1849) Mexico, Yucatan31,7 mm
Drymaeus cuernavacensis P.H. Fischer& J.C.H. Crosse, 1874 Mexico
Kuschelenia culminea (A.V.M.D. D'Orbigny,1835) Bolivia28 mm
Kuschelenia culminea edwardsi (P.M.A. Morelet, 1863) Peru, Huancavelica29 mm
Kuschelenia culminea subjussieui (H.A. Pilsbry, 1897) Peru28 mm
Kuschelenia culminea zilchi W.K. Weyrauch, 1967 Peru, Lima
Bostryx cunyacensis A.S.H. Breure, 1978 Peru, Apurimac26,8 mm
Drymaeus curianianus (L.A. Reeve, 1849) Venezuela
Naesiotus curtus (P.H. Reibisch, 1892) Galapagos10 mm
Bostryx cuspidatus P.M.A. Morelet, 1863 Peru
Drymaeus cuticulus L. Pfeiffer, 1855 Brazil, Rio de Janeiro27,5 mm
Naesiotus cutisculptus C.M.F. Ancey, 1901 Brazil9,4 mm
Bostryx cuyanus L. Pfeiffer, 1867 Argentina
Drymaeus cuzcoensis (L.A. Reeve, 1849) Peru, Cuzco26,6 mm
Vermiculatus cuzcoensis (W.K. Weyrauch, 1967) Peru, Cuzco30 mm
Vermiculatus cuzcoensis marasensis (W.K. Weyrauch, 1967) Peru, Cuzco
Bulimus cyclostomus (FOSSIL) J.B.P.A. Lamarck, 1804 † France, Grignon
Drymaeus cygneus R.A. Philippi, 1867 Peru
Pseudoperonaeus cylindricus W.K. Weyrauch, 1960 Peru, Lima
Drymaeus cylindricus S.I. Da Costa, 1901 Peru30,6 mm
Naesiotus cymatias W.H. Dall, 1917 Galapagos
Drymaeus dacostae G.B. I Sowerby, 1892 Colombia26,3 mm
Drymaeus dacostianus H.A. Pilsbry, 1898 South America
Drymaeus dakryodes R.B. Salvador, D.C. Cavallari& L.R.L. Simone, 2015 Brazil, Goias40 mm
Naesiotus darwini (L. Pfeiffer, 1846) Galapagos
Rabdotus dealbatus (T. Say, 1821) Mexico, Nuevo León26 mm
Rabdotus dealbatus liquabilis (L.A. Reeve, 1848) Texas
Rabdotus dealbatus mooreanus (L. Pfeiffer, 1868) Texas28 mm
Rabdotus dealbatus ozarkensis H.A. Pilsbry& J.H. Ferriss, 1906 Texas24,5 mm