23. The genus Denops Fisch. (Coleoptera: Cleridae). The new species Denops canariensis n. sp. belonging to the subgenus Tillinae, is described with notes on its ecology, and the larva is also described. 24. The genus Criocephalus Muls. (Coleoptera: Cerambycidae). The species are keyed, also the larva, and notes on their distribution and ecology are given.