EGG.—Fusiform, thick in middle, tapering both ways, the base a little broader than the summit; some examples have the side convex from middle to either end, but other have the upper half a little incurved; ribbed longitudinally, the number of ribs sixteen, three or four of which end at about four fifts the distance from base; ribs low; narrow, the spaces between flat, and crossed by many fine ridges; top rounded; the micropyle is in centre of a rosette of fine cells, outside of which is a ring of larger ones; color yellow-green. Duration of this stage four days.

A new species discovered by me in 1883, whilst collecting for Mr. Henley Grose Smith, of England. It was described by Mr. W. H. Edwards shortly after my return. In the end of the June and beginning of July, I found this insect easy to capture. It was comparatively rare in some districts of the North-west Territory, but at the principal crossing of the Red Deed River and the neighborhood of Fort Edmonton, it was quite common.

In the early spring of 1887, while arranging the National Museum collection of Arctiidœ, I tried to make out the varieties of Callomorphalecontei listed in our catalogues, and soon came to the conclusion that we had to do with more species than were generally accepted. I investigated the literature of the subject and prepared a paper, the results of which were first communicated to the Entomological Society of Washington at their March meeting (see Entom. Americ., iii., p.20).

During the past season I endeavored, as opportunity offered, to confirm and supplement the observations upon this recorded in the May issue of the Canadian Entomologist, pages 81–86. The insects appeared at least ten days earlier than in 1886, and on 29th May I captured, upon the old sugar-maple near Hull therein mentioned, four males, which were entirely black—var. affinis.