Microceramus cienfuegoensis C. de la Torre& P. Bartsch, 1972 Cuba9 mm
Torrecoptis cinerea (L. Pfeiffer, 1850) Cuba13 mm
Holospira cionella H.A. Pilsbry, 1905 USA, Arizona11,8 mm
Holospira cionella capillacea H.A. Pilsbry& J.H. Ferriss, 1905 USA, Arizona11,3 mm
Centralia cioniscus (C. de la Torre, 1911) Cuba
Liocallonia clara (B.H. Wright in L. Pfeiffer, 1865) Cuba
Tetrentodon claritaensis C. de la Torre& P. Bartsch, 1972 Cuba
Coelocentrum clathratum E.C. Von Martens, 1897 Guatemala
Macroceramus claudens J. Gundlach in L. Pfeiffer, 1859 Cuba18,5 mm
Macroceramus claudens baitiquiriensis C. de la Torre& P. Bartsch, 2008 Cuba10,9 mm
Heterocoptis clava C. de la Torre& P. Bartsch, 1972 Cuba
Tetrentodon clenchi (C.G. Aguayo, 1932) Cuba
Tetrentodon clerchi (R. Arango in L. Pfeiffer, 1870) Cuba12 mm
Macroceramus clerchi R. Arango in L. Pfeiffer,1866 Cuba16,2 mm
Macroceramus clerchi imiasensis C. de la Torre & P. Bartsch, Cuba14,55 mm
Coelostemma coahuilenis P. Bartsch, 1906
Apertaxis coahuilensis (P. Bartsch, 1906) Mexico, Saltillo
Haplocion coahuilensis (W.G. Binney, 1865) Mexico, Saltillo
Tetrentodon cocaensis M.L. Jaume& C. de la Torre, 1975 Cuba
Holospira cockerelli W.H. Dall, 1897 USA, Texas
Poecilocoptis coerulans (F. Poey, 1864) Cuba15,9 mm
Poecilocoptis coerulescens (F. Poey, 1874) Cuba18 mm
Spirostemma cognatum (H. Vendryes, 1901) Jamaica
Microceramus coliseoensis C. de la Torre& P. Bartsch, 1972 Cuba
Tetrentodon coliseoensis C. de la Torre& P. Bartsch, 1972 Cuba
Brachypodella collaris (A.E.J. Férussac, 1821) Guadeloupe9 mm
Tomelasmus coloratus (R. Arango, 1882) Cuba18 mm
Torrecoptis columbarii C. de la Torre& P. Bartsch, 1972 Cuba
Holospira colymis F.G. Thompson& E.L. Mihalcik, 2005 Puebla, Mexico
Eucalodium compactum H.A. Pilsbry, 1893 Mexico, Tabasco
Torrecoptis concinna C. de la Torre& P. Bartsch, 1972 Cuba
Microceramus concisus (P.M.A. Morelet, 1849) Mexico, Yucatan8 mm
Centralia concolor C. de la Torre& P. Bartsch, 1972 Cuba
Centralia concolor agustini C. de la Torre& P. Bartsch, 1972 Cuba
Centralia concolor minima C. de la Torre& P. Bartsch, 1972 Cuba