The application of Dyar's Law to lepidopterous larvae has been discussed by numerous investigators, who have shown that in many species the head-widths follow a regular geometrical progression in successive instars. Taylor reviews Dyar's Law thoroughly and tests it out on the sawfly, Phyllotoma nemorata (Fallen). The same author examines Dyar's measurements on 46 species of sawfly larvae and concludes that Dyar's Law holds as well for the sawfly larvae as for the 28 species of lepidopterous larvae on which the rule was originally based.

The difference in food plants and seasonal life-history between beetles of the species Lema trilineata Oliv. in Manitoba and the same species in Eastern Canada and Eastern United States indicates rather strongly that they belong to different biological races. The belief was entertained for a time that the Manitoba beetle belonged to an entirely different species, but a series of adults sent to Mr. W. J. Brown of the Dominion Entomological Branch, Ottawa, proved to be identical with the eastern species.

During the course of recent collecting in Illinois, an interesting species of aphid has been discovered on sedges (Carex sp.). It differs so radically, however from all species hitherto described in that genus that a new subgenus has been proposed for its reception. In view of the recent publication on the “Aphiidae of Illinois” and the very interesting character of the species it seems advisable to describe it at this time.

Through the kindness of Dr. Needham I have been enabled to examine specimens of a Leptophlebia species from Modoc Co., California, which we both agree comes closer to Eaton's description of gregalis than does any species before us.

Holotype male. Medium sized, rather elongate; head, prothorax and underside piceous or rufo-piceous, each elytron with a basal and sub-apical dark area much as in subvittata, the remainder of the body testaceous or slightly darker. Head densely, moderately, variolately punctate, rather densely clothed with yellowish hair; clypeal suture slightly impressed, clypeus rather strongly reflexed, truncate at apex, the angles broadly rounded, sides faintly convergent apically, surface closely, coarsely punctate. Antennal club not quite equal to funicle.

During field work at Bobcaygeon, Ont., in the summers of 1931 and 1932 I paid particular attention to the collecting and breeding of Haploptilia larvae and was successful in securing considerably over a dozen species. As very little has been published on this interesting group apart from Heinrich's excellent treatment in Forbes' Lepidoptera of New York State (1924, Mem. 68, Cornell Univ. Agr. Exp. Sta. pp. 202-217) it has occurred to me that the publication of my field notes, combined with a photographic figure of the characteristic larval case pertaining to each species, might be of value to students.

In connection with the descriptions of Fabriciella emarginata Toth. and F. latifrons Toth. (Can. Ent. LVI, 260, 1924) no mention is made of the specimens on which these names are based except to define the distribution of the species in a list at the end of Dr. Tothill's paper.