Lithasia crassa S.S. Haldeman, 1842 Tennessee
Holandriana crassilabris (J.R. Bourguignat, 1884) Croatia
Lithasiopsis crassus F.G. Thompson, 1959 Tamaulipas, Mexico
Elimia crenatella I. Lea, 1860 Alabama
Anculosa curreyana I. Lea, 1841 Tennessee
Pleurocera currierianum I. Lea, 1863 Alabama
Lithasia curta I. Lea, 1868 Alabama17,4 mm
Goniobasis curvicostata (L.A. Reeve, 1861) Alabama
Anculosa cylindracea T.A. Conrad, 1834 Alabama
Lithasiopsis darnelli F.G. Thompson, 1959 Tamaulipas, Mexico
Elimia darwini E.L. Mihalcik& F.G. Thompson, 2002 USA, Georgia
Elimia densicostata (L.A. Reeve, 1862)
Elimia dickinsoni (W.J. Clench& H. Turner, 1956) Florida
Leptoxis dilatata T.A. Conrad, 1835 Pennsylvania
Anculosa dislocata L.A. Reeve, 1861 Pennsylvania
Holandriana divina (J.R. Bourguignat, 1884) Croatia
Elimia dooleyensis (I. Lea, 1862) USA, Georgia
Lithasia duttoniana I. Lea, 1841 Tennessee, Duck River
Goniobasis ebenum (I. Lea, 1841) Kentucky, Cumberland River
Elimia edgariana (I. Lea, 1841) Tennessee23 mm
Goniobasis emeryensis I. Lea USA, Georgia17,1 mm
Gyrotoma excisa (I. Lea, 1843) Alabama
Pleurocera excurvatum (T.A. Conrad, 1834) Tennessee14 mm
Holandriana eximia (J.R. Bourguignat, 1884) Croatia
Elimia exusta E.L. Mihalcik& F.G. Thompson, 2002 Alabama
Holandriana fagotiana (J.R. Bourguignat, 1884) Croatia
Elimia fascinans I. Lea, 1861 Alabama
Anculosa flava I. Lea, 1862 Alabama
Anculosa flexuosa H.H. Smith in C. Goodrich, 1922
Goniobasis floridensis (L.A. Reeve, 1860) Florida, Marion County
Goniobasis floridensis timidus (C. Goodrich, 1942) USA, Georgia
Io fluvialis (T. Say, 1825) Florida, Lee County
Leptoxis foremani I. Lea, 1843 Alabama
Leptoxis formani (I. Lea, 1843) Alabama24 mm
Leptoxis formosa I. Lea, 1860 Alabama, Wetumpka, Goose river12,2 mm