Holandriana hellespontica (FOSSIL) (Calvert& M. von Neumayr, 1880 †)
Holandriana hispanica C.A. Westerlund, 1898
Holandriana holandrii (C. Pfeiffer, 1828)
Holandriana holandrii afra (E.A. Rossmässler, 1837)
Holandriana induta C.A. Westerlund, 1898
Holandriana krambergeri (FOSSIL) (Š. Brusina, 1892 †)
Holandriana krapinensis (J.R. Bourguignat, 1884)
Holandriana lucida (FOSSIL) A.E.M. Cossmann, 1886 †
Holandriana macedonica (FOSSIL) (Burgerstein, 1877 †)
Holandriana ovoidea (J.R. Bourguignat, 1884)
Holandriana patula (FOSSIL) (L.M.D. Bellardi& O.G. Michelotti, 1841 †)
Holandriana pecchioli (FOSSIL) (M. Hörnes, 1856 †)
Holandriana ponderosa (J.R. Bourguignat, 1884)
Holandriana ricinus (FOSSIL) (M. von Neumayr, 1875 †)
Holandriana serbica (FOSSIL) (Živkovic, 1893 †)
Holandriana speciosa (J.R. Bourguignat, 1884)
Io fluvialis (T. Say, 1825)
Leptoxis ampla J.G. Anthony, 1854
Leptoxis carinata (J.G. Bruguière, 1792)
Leptoxis choccoloccoensis (H.H. Smith, 1922)
Leptoxis compacta J.G. Anthony, 1854
Leptoxis dilatata T.A. Conrad, 1835
Leptoxis foremani I. Lea, 1843
Leptoxis formani (I. Lea, 1843)
Leptoxis formosa I. Lea, 1860
Leptoxis ligata J.G. Anthony, 1860
Leptoxis lirata (H.H. Smith, 1922)
Leptoxis melanoides T.A. Conrad, 1834
Leptoxis mimica (H.H. Smith in C. Goodrich,1922)
Leptoxis minor A. Hinkley, 1912
Leptoxis picta T.A. Conrad, 1834
Leptoxis plicata T.A. Conrad, 1834
Leptoxis praerosa T. Say, 1821
Leptoxis squalida (I. Lea, 1845)
Leptoxis taeniata T.A. Conrad, 1834
Leptoxis torrefacta (C. Goodrich, 1922)
Leptoxis virgata I. Lea, 1841