The fossil Hymenoptera, Mecoptera, Orthoptera, and orders of insects related to these are described from the Triassic beds at Mt. Crosby, Queensland. The record of Hymenoptera extends considerably the time range of the order. Mecoptera, Neuroptera, and Trichoptera are abundant but Diptera and Lepidoptera are absent. There are many Orthoptera (Saltatoria) but only fragmentary remains of Protorthoptera, Perlaria, and Odonata. The assemblage of insects shows none of the problematical types of the Permian. Many of the forms recorded are described in new species and genera.