Leptachatina captiosa C.M. Cooke, 1910 Hawaii
Amastra caputadamantis A. Hyatt & H.A. Pilsbry,1911 Hawaii
Leptachatina cerealis (A.A. Gould, 1847) Hawaii7,6 mm
Leptachatina chrysallis (L. Pfeiffer, 1855) Hawaii
Leptachatina cingula (J.W. Mighels, 1845) Hawaii17,1 mm
Laminella citrina (L. Pfeiffer, 1848) Hawaii17,4 mm
Carelia cochlea (L.A. Reeve, 1849) Hawaii35,6 mm
Leptachatina compacta W.H. Pease, 1869 Hawaii
Laminella concinna W. Newcomb, 1854 Hawaii
Leptachatina concolor C.M. Cooke, 1910 Hawaii
Amastra conica D.D. Baldwin, 1906 Hawaii
Leptachatina conicoides E.R. Sykes, 1900 Hawaii
Amastra conifera E.A. Smith, 1873 Hawaii
Leptachatina conspicienda C.M. Cooke, 1910 Hawaii
Leptachatina convexiuscula E.R. Sykes, 1900 Hawaii
Amastra cornea (W. Newcomb, 1854) Hawaii
Leptachatina corneola (L. Pfeiffer, 1846) Hawaii
Leptachatina coruscans W.D. Hartman, 1888 Hawaii
Leptachatina costulata (J.T. Gulick, 1856) Hawaii
Leptachatina costulosa W.H. Pease, 1870 Hawaii
Amastra crassilabrum (W. Newcomb, 1854) Hawaii9 mm
Leptachatina crystallina (J.T. Gulick, 1856) Hawaii, Oahu8,5 mm
Carelia cumingiana L. Pfeiffer, 1855 Hawaii, Oahu
Leptachatina cuneata C.M. Cooke, 1910 Hawaii
Amastra cyclostoma D.D. Baldwin, 1895 Hawaii
Leptachatina cylindrata W.H. Pease, 1869 Hawaii
Amastra cylindrica (W. Newcomb, 1854) Hawaii18 mm
Amastra davisiana C.M. Cooke, 1908 Hawaii
Leptachatina deceptor T.D.A. Cockerell, 1927 Hawaii
Amastra decorticata J.T. Gulick, 1873 Hawaii13 mm
Leptachatina defuncta C.M. Cooke, 1910 Hawaii
Amastra delicata C.M. Cooke, 1933 Hawaii
Planamastra diginophora (C.M.F. Ancey) Hawaii
Planamastra digonophora (C.M.F. Ancey, 1889) Hawaii
Leptachatina dimidiata (L. Pfeiffer, 1856) Hawaii