In the late summer of 1940, there was a decided peak in the abundance of the monarch butterfly, Danaus plexippus L. Numerous reports were received by the Royal Ontario Museum of Zoology, and a personal investigation proved the abundance of the species; trees bordering the north shore of Lake Ontario in the vicinity of Toronto were literally covered with monarch butterflies.

The Hippelates flies or eye gnats are dipterous insects of considerable interest to medical entomologists and public health workers because of their relation to the transmission of yaws and epidemic eye diseases, and because of their persistently annoying habits. The writer has been engaged in studies leading to the preparation of a comprehensive, illustrated monograph of the group in the western hemisphere, a work long needed because of the close similarity of the many species and the difficulty of proper determinations from the literature.

There are few North American insects so little known as the members of the family Japygidae. In the United States the entire family has heretofore been represented by hardly a dozen species and from Canada not a single species has yet been recorded. American entomologists have devoted scarcely any attention to the group, and as a consequence, few collections have been made.

It has been recognized for some time that certain stomach poisons act as contact poisons also. O'Kane and Glover (1935) were among the first to demonstrate that arsenic penetrates the integument of roaches. They give a brief historical account of work preceding 1935. Sodium fluoride has been recommended in this country as an insecticide for the control of roaches since 1915 (Marlatt).

Since the writer's list of the Odonata of Manitoba was published, six species have been added to the fauna of this province and the ranges of some of the species already listed have been considerably extended. Most of these new records are based on the following collections:

1. Forty-four specimens from Churchill, on the coast of Hudson Bay (58°50' N. Lat.), collected in 1936 by Mr. H. Elliott McClure and submitted for identification to the writer by Professor B. Elwood Montgomery of Purdue University, Lafayette, Indiana. All of these with the possible exception of one species were taken on July 18 and are labelled “Bush.”

Female. Length about 8 mm., anterior wing about 5.5 mm. The following parts are ferruginous: labrum, mandibles, lower margin of clypeus, scape, flagellum beneath (above it is dusky reddish), tubercles, scutellum, axillae, area of metathorax (except apical part), upper part of sides of metathorax, region below wings, a very broad band across pleura, legs, first two abdominal tergites and base of third, apex of abdomen and all of abdominal venter.