Pseudosubulina caduca (H.B. Baker, 1939)
Salasiella camerata H.B. Baker, 1941
Rectaxis canalizonalis (H.A. Pilsbry, 1930)
Euglandina candida (R.J. Shuttleworth, 1852)
Euglandina carminensis (P.M.A. Morelet, 1852)
Peteniella catenata (L. Pfeiffer, 1856)
Euglandina chanchamayoensis (H.B. Preston, 1909)
Pseudosubulina chaperi (F.P. Jousseaume, 1889)
Pseudosubulina cheatumi H.A. Pilsbry, 1950
Chersomitra chiapensis H.A. Pilsbry, 1909
Mayaxis chiapensis (L. Pfeiffer, 1856)
Streptostyla chiriquiana E.C. Von Martens, 1901
Laeviglandina chiriquiensis (S.I. Da Costa, 1900)
Streptostyla clavatula C.M.F. Ancey, 1903
Euglandina cognata (H. Strebel, 1875)
Guillarmodia comma (F.G. Thompson, 1995)
Poiretia compressa (A. Mousson, 1859)
Proameria conferta (L. Pfeiffer, 1861)
Volutaxis confertecostatus H. Strebel, 1882
Rectaxis confertestriatus (H. Strebel, 1882)
Euglandina constricta (F.G. Thompson, 1995)
Streptostyla conulus E.C. Von Martens, 1891
Proameria cordovana (L. Pfeiffer, 1856)
Poiretia cornea (L. Brumati, 1838)
Euglandina corneola (W.G. Binney, 1857)
Salasiella corni H.G. Richards, 1939
Streptostyla costaricensis S.I. Da Costa, 1904
Pseudosubulina costata (H.B. Baker, 1939)
Volutaxis costatostriatus (L. Pfeiffer, 1856)
Spiraxis costulosus C.B. Adams, 1850
Myxastyla coxeni (H.G. Richards, 1938)
Streptostyla crassa H. Strebel, 1877
Euglandina cucutensis H.A. Pilsbry, 1939
Euglandina cumingii (H.H. Beck, 1837)
Euglandina cuneus (E.C. Von Martens, 1891)