Several new finds of American Paleozoic fish are described: Thursius? clappi, from the Devonian of Scaumenac Bay, Quebec; Amblypterus steward, from the Permian of Pennsylvania; and the following from the Permo-Carboniferous of Texas: Orodus? corrugatus; BRACHYRHIZODUS wichitaensis (Petalodontidae); Ctenacanthus amblyxiphias Cope; "Hybodus" copei Hay; MACRODONTACANTHUS king; (Incertae sedis in Bradydonti); "Anodontacanthus amencanus" Hussakof; and an ossified Paleozoic shark vertebra.