The Peckhams in “Wasps Social anl Solitary” state that (p. 76) “Ashmead quotes from Fabre the remarkable statement that Oxybelus carries her flies home impaled on her sting, an idea that probably arose from the fact that nearly the whole of the fly is visible.” The species they studied, O. quadrinotatus, carried its flies one at a time, upside down head tightly clasped with its third pair of legs, and all of the abdomen projecting beyond the abdomen of the wasp.

In general appearance and coloration resembling D. spicatus DeLong and D. debilis Uhler, but with vertex much less sharply angled, and with tips of elytra slightly margined with fuscous. Length, female 3.5-3 7 mm.; male 3-3.2 mm.

Of a total of approximately one-hundred and fifty species of Microlepidoptera collected and reared by the writer in July, 1926 at Sparrow Lake, Severn Bridge, Ontario, the following seven species are described as new. Additional notes on a few previously described species are also included.

A new species of this interesting and little-known genus was recently found at Goldstream, B. C. It was a dead specimen and was found among detritus washed up on the edge of the reservoir. It is close to D. ovata O. & D. but differs from it in many important characters. The specimen is brachypterous.

One of the more interesting details of a recent investigation of the mosquitoes of the Rocky Mountains Park, Alberta, was the finding of Aedes nearcticus Dyar—a mosquito hitherto considered to be restricted to the Arctic regions of Europe and North America. A few specimens were first taken at Lake Louise in 1921, when Mr. Arthur Gibson, the Dominion Entomologist, and the writer made a brief survey of mosquito conditions. In 1922 further specimens came to hand through the kindness of Mr. N. B. Sanson who sent the writer living larvae collected at Simpson's Summit at about 7000 feet. Adults were successfully reared from these. During 1924 and 1925 a number of trips were made by the writer and his assistant, Mr. A. G. Mail, to secure data on this interesting species, and several hundred specimens of larvae, and both sexes of adults were taken.

In connection with a revision of Agrotid genera (in sens. strict.) which I have been working on for some time and which has involved a study of the male genitalia of all our North American species, I have come across a number of discrepancies in the placing of certain genera and species which it is the purpose of this short paper to correct.

The North American species of Trichoceridae belong to three genera, Diazosma Bergroth (subsinuata Alexander), Paracladura Brunetti (trichoptera Osten Sacken) and the dominant Trichocera Meigen, with numerous species, some of which are widely distributed throughout the Holarctic Region. The scope of the family, its phylogenetic relationships, and a key to the known genera, are all discussed in a recent paper by the writer. (The Trichoceridae of Australia; Proc. Linnean Soc. N. S. W., 51 : 299—304; 1926) and need not be considered further at this time.

Shannon's “Revision of the Chilosinae” includes keys to the species of the various genera of the group but in some cases no descriptiolls of the new species are included. In the key to Cartosyrphus the characters separating some closely related species are difficult to interpret. The male of C. similis Shan. is separated from tristis Lw. by the slightly more swollen first segment of the posterior tarsi. While this character is quite satisfactory in the female it cannot be relied upon in the male. In order to verify observations made several years ago when I compared specimens with the types of the two species mentioned I wrote to Dr. Banlis requesting information on the colour of the squamal cilia.

From a study of a large series of specinlens of Odontomerus it seems evident that O. canadensis Prov. is not separable from O. mellipes Say and the above synonymy is suggested. Some specimens agree very well with the characters given in Rohwer's key while others show a complete intergradation of characters and cannot be associated with either form.