Onobops bispiralis (FOSSIL) Wesselingh, 2006 †
Onobops bisulcatus (FOSSIL) Wesselingh, 2006 †
Cochliopina bourguyi (FOSSIL) (Roxo, 1924 †)
Tryonia brevissima H.A. Pilsbry, 1890
Antrobia breweri (R. Hershler& F.G. Thompson, 1990)
Tryonia brunei D.W. Taylor, 1987
Littoridina bruninensi W.A. Biese, 1944
Eupaludestrina canariensis (A. Mousson, 1872)
Paludiscala caramba D.W. Taylor, 1966
Heleobia carcotensis Collado, Valladares& Méndez, 2016
Sioliella carinata (FOSSIL) Wesselingh, 2006 †
Toxosoma carinatum (FOSSIL) Wesselingh, 2006 †
Dyris carinatus (FOSSIL) Wesselingh, 2006 †
Mexipyrgus carranzae D.W. Taylor, 1966
Heleobops carrikeri D.H.S. Davis & M. McKee,1989
Heleobia castellanosae J.M. Gaillard, 1974
Aroapyrgus chagresensis J.P.E. Morrison, 1946
Aphaostracon chalarogyrus F.G. Thompson, 1968
Heleobia charruana (A.V.M.D. D'Orbigny,1843)
Tryonia cheatumi H.A. Pilsbry, 1935
Aroapyrgus chefinesnoel E. Rolán, 2010
Littoridina chimbaensis W.A. Biese, 1944
Littoridina choapaensis W.A. Biese, 1944
Tryonia chuviscarae R. Hershler, H.P. Liu& J.J. Landye, 2011
Tryonia cingulifera (A. Adams, 1860)
Tryonia circumstriata A.B. Leonard & T.H. Ho,1960
Aroapyrgus cisterninus (B. Walker, 1919)
Pyrgophorus cisterninus (H.C. Küster, 1852)
Tryonia clathrata W. Stimpson, 1865
Aroapyrgus clenchi (C. Goodrich& H. Van Der Schalie, 1937)
Juturnia coahuilae (D.W. Taylor, 1966)
Subcochliopa colabrensis J.P.E. Morrison, 1946
Cochliopina colombiana (FOSSIL) Nuttall, 1990 †
Aroapyrgus colombiensis J. Malek & C. Little,1971
Onobops communis (FOSSIL) Wesselingh, 2006 †