Euaustenia cassida (F.W. Hutton)
Macrochlamys castaneolabiata H.H. Godwin-Austen
Oxytesta castor (W. Theobald)
Macrochlamys cathaiana O.F. von Möllendorff,1899
Macrochlamys causia (W.H. Benson)
Microcystina cavernae H.H. Godwin-Austen, 1891
Syama cavicula G.A. Solem, 1979
Vitrinula cebuensis (O.F. von Möllendorff,1887)
Sitala celestinae K.C. Emberton& R.J. Griffiths, 2009
Hemiplecta centralis (A. Mousson)
Cryptozona ceraria (W.H. Benson, 1853)
Macrochlamys ceratodes (L. Pfeiffer, 1859)
Cryptozona ceylanica (L. Pfeiffer)
Sitala champfauri E. Fischer-Piette, Ch.P. Blanc, F. Blanc& F. Salvat, 1994
Kalidos chastelli (A.E.J. Férussac, 1832)
Vitrinula chaunax (H.A. Pilsbry & Y. Hirase),
Cryptozona chenui (L. Pfeiffer, 1847)
Vitrinula chichijimana (H.A. Pilsbry & Y. Hirase),
Macrochlamys choinix (W.H. Benson, 1861)
Ariophanta christinae (C.B. Adams)
Cryptozona chrysoraphe O.F. von Möllendorff
Cryptozona chrysoraphe krejcii F. Haas
Macrochlamys cincta O.F. von Möllendorff,1883
Macrochlamys cinnamonea (A. Valenciennes)
Xesta citrina (C. Linnaeus, 1758)
Xesta citrina campylonota (C.M. Tapparone-Canefri,1883)
Xesta citrina obiana O.F. von Möllendorff,1902
Xesta citrina strubelli (O. Böttger, 1891)
Xesta citrina typica H.A. Pilsbry, 1889
Naninia clairvillia (A.E.J. Férussac, 1822)
Microcystina clarkae W.J.M. Maassen, 2000
Kalidos cleamesi (E.A. Smith, 1882)
Macrochlamys clessini C.A. Westerlund, 1902
Khasiella climacterica (W.H. Benson, 1836)
Naninia coagulata (L. Pfeiffer)