Camaena cicatricosa ducalis (O.F. Müller, 1774)
Camaena cicatricosa inflata (O.F. von Möllendorff,1885)
Landouria ciliocincta (O.F. von Möllendorff,1897)
Papuina cingulata C. Hedley, 1891
Chloritis circumdata (A.E.J. Férussac, 1821)
Pleuroxia clydonigera R. Tate, 1894
Amphidromus cochinchinensis (L. Pfeiffer, 1857)
Mesodontrachia cockburnensis G.A. Solem, 1988
Amplirhagada coffea F. Köhler, 2011
Basedowena cognata G.A. Solem, 1993
Gloreugenia cognata (G.P.L.K. Gude, 1907)
Amphidromus cognatus H.C. Fulton, 1907
Setobaudinia collingii (E.A. Smith, 1893)
Minimelon colmani G.A. Solem, 1993
Obba columbaria G.B. Sowerby, 1841
Amphidromus columellaris O.F. von Möllendorff,1862
Amphidromus columellaris sierahensis H.A. Pilsbry, 1900
Amplirhagada combeana T. Iredale, 1938
Amphidromus comes (L. Pfeiffer, 1861)
Amphidromus comes polymorphous (C.M. Tapparone-Canefri,1874)
Westraltrachia commoda T. Iredale, 1939
Chloritis conamphala G.P.L.K. Gude
Ganesella concavospira (O.F. von Möllendorff,1901)
Chloritis concisa L. Pfeiffer
Chloritis concisa cumingi G.P.L.K. Gude, 1906
Chloritis condoriana (J.C.H. Crosse& P.H. Fischer, 1863)
Rhynchotrochus confirmata B. Rensch, 1933
Amplirhagada confusa G.A. Solem, 1981
Globorhagada confusa F. Köhler, 2011
Crystallopsis conica G.P.L.K. Gude, 1907
Megalacron coniformis (A.E.J. Férussac, 1821)
Posorites conscendens (J.C. Cox, 1866)
Amphidromus constans H.C. Fulton, 1896
Rhagada construa T. Iredale, 1939
Isomeria continua (L.A. Reeve, 1854)