Naesiotus chemnitzioides E. Forbes, 1850 Galapagos18,5 mm
Drymaeus chenui R.A. Philippi, 1867 Peru29 mm
Drymaeus chevallieri A.S.H. Breure, 1976 French Guyana
Drymaeus chiapasensis L. Pfeiffer, 1866 Mexico
Drymaeus chiapensis E.C. Von Martens, 1893 Chiapas, Mexico
Scutalus chiletensis W.K. Weyrauch, 1967 Peru, Cajamarca47 mm
Scutalus chiletensis granulatus W.K. Weyrauch, 1967 Peru
Suniellus chillu A.S.H. Breure, 1978 Bolivia
Drymaeus chimborasensis (L.A. Reeve, 1848) Colombia39,7 mm
Mesembrinus chiriquensis S.I. Da Costa, 1901 Panama29,1 mm
Naesiotus christenseni W.B. Miller& D.M. Reeder, 1984 USA, Arizona
Naesiotus chrysalis (L. Pfeiffer, 1847) Martinique31,6 mm
Bulimulus chrysaloides (H.A. Pilsbry, 1897) Martinique
Drymaeus chrysomelas E.C. Von Martens, 1867 Amazonia
Auris chrysostoma S. Moricand, 1836 Brazil, Bahia53,3 mm
Auris chrysostoma swainsoni (L. Pfeiffer, 1845) Brazil, Bahia
Bostryx chusgonensis W.K. Weyrauch, 1960 Peru, La Libertad
Bostryx cicheroi M.I. Hylton-Scott, 1967 Argentina
Naesiotus cinerarius W.H. Dall, 1917 Galapagos
Naesiotus cinereus (L.A. Reeve, 1849) Bolivia15,5 mm
Bostryx circuliportus A.S.H. Breure, 1978 Peru15 mm
Drymaeus clarus L. Pfeiffer, 1857 Peru15,9 mm
Drymaeus clathratus L. Pfeiffer, 1858 Peru30 mm
Bostryx claviformis F. Haas, 1951 Peru
Bulimus clavulus (FOSSIL) J.B.P.A. Lamarck, 1804 † France, Grignon
Bostryx climacographus E.L. Holmberg, 1912 Argentina
Drymaeus coarctatus (L. Pfeiffer, 1845) Brazil34,6 mm
Diaphanomormus coelestini (F. Haas, 1952) Peru
Diaphanomormus coelestini obesus W.K. Weyrauch, 1964. Peru, Huanuco
Bostryx coelhoi A.S.H. Breure, 1978 Peru
Bostryx coerulescens L. Pfeiffer, 1858 Peru, Cajamarca
Drymaeus cognatus H.A. Pilsbry, 1901 Colombia42 mm
Bostryx cokerianus (W.H. Dall, 1909) Peru, Independencia Bay
Drymaeus colimensis H. Rolle, 1895 Mexico, Colima29,1 mm
Drymaeus columbianus (H.C. Lea, 1838) Colombia, Magdalena River26,4 mm