Dr. Harrison G. Dyar, in the Proceedings of the Entomological Society of Washington, VI., No. 4 has given us a very interesting and important paper on the Hulst collection of Geometridœ.

In this paper he has shown, from an examination of the type specimens, that a considerable number of Dr. Hulst's supposed species are not really entitled to specific rank. Of course, any entomologist describing as freely as Dr. Hulst did would be sure to make some mistakes and create some synonyms, and I have no doubt that Dr. Dyar is prefectly correct in his judgment in the majority of cases that he cites.