Ptychotrema columellaris (E.C. Von Martens, 1876)
Streptartemon comboides (A.V.M.D. D'Orbigny,1837)
Gulella commoda (E.A. Smith, 1903)
Streptaxis concinnus (W.T. Blanford, 1880)
Discartemon conicus T. Siriboon & S. Panha,2014
Conogulella conospira (E.C. Von Martens, 1892)
Gulella conradti B. Verdcourt, 1956
Parvedentulina conspicua K.C. Emberton, 2002
Gulella constricta K.C. Emberton, 2001
Streptaxis contundata (A.E.J. Férussac, 1821)
Streptaxis contusus (A.E.J. Férussac, 1821)
Streptartemon cookeanus F. Baker, 1914
Parennea cossyphae A.C. van Bruggen, 1989
Odontartemon costulatus O.F. von Möllendorff,1883
Streptaxis costulosus (L. Pfeiffer, 1852)
Gulella crassidens (L. Pfeiffer, 1859)
Gulella crassidens jonesi A.C. van Bruggen, 1969
Conturbatia crenata J. Gerlach, 2001
Parvedentulina crenulata K.C. Emberton, 2002
Dadagulella cresswelli B. Rowson & P. Tattersfield,2013
Gonaxis cressyi M. Connolly, 1922
Perrottetia cristatella (O.F. von Möllendorff,1901)
Streptaxis crossei (L. Pfeiffer, 1867)
Rectartemon cryptodon (S. Moricand, 1851)
Streptartemon cumingianus (L. Pfeiffer, 1849)
Gulella cuspidata B. Verdcourt
Gonospira cylindrella (C.B. Adams, 1868)
Streptaxis cypsele (L. Pfeiffer, 1849)
Gulella daedalea (J.C. Melvill& J.H. Ponsonby, 1903)
Perrottetia daedalus (A.R.J.B. Bavay& P. Dautzenberg, 1908)
Gulella davisae Herbert, 2016
Gibbulinella dealbata (P.B. Webb & S. Berthelot,1833)
Streptartemon decipiens (J.C.H. Crosse, 1865)
Gulella decussatula (H.B. Preston, 1913)
Streptaxis decussatus (H.A. Pilsbry, 1898)