Bradybaena cochinchinensis (L. Pfeiffer, 1862) South Vietnam
Stenogyropsis cocoa Páll-Gergely & Hunyadi,2017
Calocochlia codonensis J.G. Hidalgo, 1888 Philippines, Sibuyan Island41,5 mm
Trishoplita collinsoni (A. Adams, 1868) Japan, Kagoshima
Helicostyla collodes (G.B. I Sowerby, 1841) Philippines, Cebu38 mm
Trishoplita commoda (A. Adams, 1868) Japan, Hiroshima
Helicostyla concinna G.B. I Sowerby, 1841 Philippines, Marinduque Island42 mm
Helicostyla concinna archeri (W.J. Clench, 1936) Philippines, Marinduque Island42 mm
Helicostyla concinna virens L. Pfeiffer, 1842 Philippines, Burias Island41,7 mm
Aegista conella A. Adams, 1868 Japan, Yamagata
Euhadra congenita (E.A. Smith, 1878) Japan, Hyogo31,1 mm
Euhadra congenita hickonis W. Kobelt Japan, Kyoto25 mm
Bradybaena connectens (O.F. von Möllendorff,1899) Philippines, Sulu Sea38 mm
Helicostyla connectens (O.F. von Möllendorff,1899) Philippines, Sulu Island41,9 mm
Pseudobuliminus conoidius P.M. Heude, 1890 China, Hunan Province3 mm
Plectotropis conomphala H.A. Pilsbry & Y. Hirase,1903 Japan, Kagoshima
Trishoplita conospira (L. Pfeiffer, 1851) Japan, Tokyo
Cathaica constantiae (A. Adams, 1870) China, Guangxi province17,2 mm
Trishoplita conulina (E.C. Von Martens, 1867) Japan, Kyoto
Bradybaena coreanica A. Adams & L.A. Reeve,1850 Japan
Calocochlia coronadoi J.G. Hidalgo, 1868 Philippines, Cataduanes44,2 mm
Pseudobuliminus corti (A.R.J.B. Bavay& P. Dautzenberg, 1908)
Helicostyla corticolor W. Kobelt, 1911 Philippines
Plectotropis couturieri (A.R.J.B. Bavay& P. Dautzenberg, 1908) Vietnam, Tonkin
Euhadra craspedocheila (A. Adams, 1868) Japan
Chloraea cristatella J.F. Quadras& O.F. von Möllendorff, 1893
Calocochlia cryptica W.J. Broderip, 1840 Philippines, Samar Island65 mm
Calocochlia cryptica cineracea C.G. Semper, 1877 Philippines
Calocochlia cryptica crenata (W.J. Broderip, 1841) Philippines, Leyte Island60 mm
Calocochlia cryptica latitans (W.J. Broderip, 1841) Philippines56 mm
Calocochlia cumingii L. Pfeiffer, 1842 Philippines, Cebu36 mm
Calocochlia cumingii pfeifferi C.G. Semper, 1877 Philippines, Cebu29 mm
Helicostyla cunctator L.A. Reeve, 1830 Philippines, Malabuyec46 mm
Canistrum curta (G.B. I Sowerby, 1841) Philippines, Masbate Island33 mm
Cochlostyla cuyoensis L. Pfeiffer Philippines, Cuyo Island