Naesiotus chemnitzioides E. Forbes, 1850
Drymaeus chenui R.A. Philippi, 1867
Drymaeus chevallieri A.S.H. Breure, 1976
Drymaeus chiapasensis L. Pfeiffer, 1866
Drymaeus chiapensis E.C. Von Martens, 1893
Scutalus chiletensis W.K. Weyrauch, 1967
Scutalus chiletensis granulatus W.K. Weyrauch, 1967
Suniellus chillu A.S.H. Breure, 1978
Drymaeus chimborasensis (L.A. Reeve, 1848)
Mesembrinus chiriquensis S.I. Da Costa, 1901
Naesiotus christenseni W.B. Miller & D.M. Reeder,1984
Naesiotus chrysalis (L. Pfeiffer, 1847)
Bulimulus chrysaloides (H.A. Pilsbry, 1897)
Drymaeus chrysomelas E.C. Von Martens, 1867
Auris chrysostoma S. Moricand, 1836
Auris chrysostoma swainsoni (L. Pfeiffer, 1845)
Bostryx chusgonensis W.K. Weyrauch, 1960
Bostryx cicheroi M.I. Hylton-Scott, 1967
Naesiotus cinerarius W.H. Dall, 1917
Naesiotus cinereus (L.A. Reeve, 1849)
Bostryx circuliportus A.S.H. Breure, 1978
Drymaeus clarus L. Pfeiffer, 1857
Drymaeus clathratus L. Pfeiffer, 1858
Bostryx claviformis F. Haas, 1951
Bulimus clavulus (FOSSIL) J.B.P.A. Lamarck, 1804 †
Bostryx climacographus E.L. Holmberg, 1912
Drymaeus coarctatus (L. Pfeiffer, 1845)
Diaphanomormus coelestini (F. Haas, 1952)
Diaphanomormus coelestini obesus W.K. Weyrauch, 1964.
Bostryx coelhoi A.S.H. Breure, 1978
Bostryx coerulescens L. Pfeiffer, 1858
Drymaeus cognatus H.A. Pilsbry, 1901
Bostryx cokerianus (W.H. Dall, 1909)
Drymaeus colimensis H. Rolle, 1895
Drymaeus columbianus (H.C. Lea, 1838)