Twenty type specimens of beetles from the Upper Triassic and Lower Jurassic of southern China and Xinjiang are re-examined in detail: five species within three genera are assigned to Cupedidae. Four species in four genera assigned to Elateridae. Five species in four genera are assigned to Permosynidae, three species in two genera are assigned to Schizocoleidae. Three species in three genera are incertae familiae. A new species, Notocupes lini sp. nov.is proposed for Notocupoides fasciatus Ponomarenk, 1966. A new genus, Toksunius gen.nov., is proposed for Ademosynoides chinaticus Lin, 199 , resulting in Toksunius chinaticus ( Lin , 1922 ) comb.nov..