In the Nov., 1892 number fo the Canadian Entomologist, pp. 269–70, there is printed a paper which was read by Professor H. Osborn before the Entomological Club of the A.A.A.S. at its Rochester meeting in August, 1892. It is entitledL “Honey-bee or House-fly”. In this article Professor Osborn questions the view, first advanced by Hyatt and Arms, that the Diptera are to be considered the highest insects.