Phalacrus Cantraine [F. J.] 1833:176 Masc. Described for Phalacrus chassé Cantraine 1833. The species name 'chassé' is a French vernacular name and unavailable. Genus not available for lack of the addition of an available [type] species and by not being used as a valid name since 1899. Also preoccupied by Phalacrus Paykull 1800 in Insecta (Coleoptera). •In the synonymy of Centrolophus Lacepède 1802. Centrolophidae.