Glyphostoma candida (R.B. Hinds, 1843) Panama, Chiriqui Bay17,2 mm
Nannodiella candidula (L.A. Reeve, 1846) Virgin Islands
Glyphostoma canfieldi (W.H. Dall, 1871) California, Monterey Bay
Clathurella capaniola (W.H. Dall, 1919) America
Etrema capillata C. Hedley, 1922 Philippines, Mactan Island10,2 mm
Glyphostoma cara (K.H.J. Thiele, 1925)
Lienardia cardinalis (L.A. Reeve, 1845) Indonesia
Etremopsis carinapex (FOSSIL) Powell, 1942 †
Etrema carinata L. Bozzetti, 2009 Madagascar, Lavanono8,5 mm
Euclathurella carissima (H.A. Pilsbry& H.N. Lowe, 1932) Mexico
Glyphostoma carmen (G.B. II Sowerby, 1882) China, Zhejiang21 mm
Glyphostoma caronensis (FOSSIL) W.C. Mansfield, 1925 † Trinidad and Tobago
Crockerella castianira (W.H. Dall, 1919) America
Etrema catapasta C. Hedley, 1922 Queensland
Glyphostoma chipolanum (FOSSIL) J. Gardner, 1937 † Florida, Alum Bluff formation
Clathurella clathra (R.P. Lesson, 1842)
Glyphostoma claudoni (P. Dautzenberg, 1900) Panama East10,5 mm
Etremopsis clifdenica (FOSSIL) A.W.B. Powell, 1942 † New Zealand, Invercargill
Paraclathurella clothonis C. Hedley, 1922 Australia, Palm Island
Lienardia coccinea (H.E. Anton, 1838) Philippines, Balicasag Island5 mm
Scobinella coelata (FOSSIL) T.A. Conrad, 1848 †
Clathromangelia coffea J.T. Kuroda, T. Habe& K. Oyama, 1971 China, Zhejiang16 mm
Lienardia comideleuca (J.C. Melvill& R. Standen, 1903) Madagascar
Etremopsis compta (FOSSIL) A.W.B. Powell, 1942 †
Lienardia compta (L.A. Reeve, 1845) Philippines, Olango Island8 mm
Lienardia compta emmae J.C. Melvill& R. Standen, 1895 Marshall Islands, Kwajalein Atoll10 mm
Domenginella conoides (FOSSIL) (D.C. Solander †) UK, England, Hampshire13 mm
Crockerella conradiana (W.M. Gabb, 1869) California, Redondo Beach
Crockerella constricta (W.M. Gabb, 1865) America
Etrema constricta C.F. Laseron, 1954 New South Wales
Etrema contempta (E.A. Smith, 1888)
Clathurella contortula G. Nevill & H. Nevill,1875 Solomon Islands
Clathurella convexa J.G. Jeffreys, 1882
Glyphostoma coronaseminale E.F. Garcia, 2015 Gulf of Mexico
Acamptogenotia coronata (FOSSIL) (J.B.P.A. Lamarck,1803 †) France, Paris Basin14 mm