EGG.—Conoidal, truncated, higher than broad, the base somewhat rounded; marked vertically by 14 ribs, one half of which reach the summit, the others nearly as far; the spaces between the ribs broad, excavated and crossed by ten or twelve fine ridges; the micropyle at top in centre of a rosette of five minute flat cells; and about these are successive irregular rings of cells, each larger than the one next within, to the verge of top; these are six and five sided, and some are sub-triangular, deeply excavated; color greenish-yellow when first laid, soon turning to brown. In shape, this egg is like that of other species of this genus, but it is characterized by fewer ribs than any with which I am acquainted. Duration of this stage 16 to 18 days.

Bembidium undulatum, Sturm. There are now about thirty-eight species of Carabidæ recognized as indigenous to North America and Europe, and some of them also to Asia. The most of these are arctic or very northern, this being one of the few that occur in temperate America, but now far northward it inhabits is unknown, as I know only of its occurrence here, though in Europe and Asia it is found in sub-arctic regions. Here it is taken abundantly in July and August under decaying vegetation in most alluvial places subject to occasional inundation. It is a Notaphus, .20 inch long, shining, elytra obscurely rufo-piceous, paler at apex with oblique pale mark, punctures of striæ obsolete behind middle and surface undulated. Identical with European specimens, and also verified by Dr. Horn.

The subfulcate primaries ally this group to the Platypteryginœ, and a certain vague resemblance to the Geometridœ may be found in the tendency which the upper surfaces of the wings show to display the same pattern on both wings. The ocelli are absent, the oral structure undeveloped, the hind wings are without frenulum. The species form mostly large cocoons, and the characteristics of the family are pronounced in this sub-family of silk-spinners. The male antennæ are feathered to the tips, each joint bearing a double pectination.

As the readers of the Canadian Entomologistare aware Dr. H. A. Hagen has argued at length to the effect that the Hessian Fly was, first not imported by the Hessian troops; secondly, that it was not imported from Europe at all, and that it is an indegenous North American insect. In the Third Report of the U.S. Entomological Commission, Dr. Packard has an extended article upon the Hessian Fly, and while he alone is responsible for the general position there taken on this subject, we discussed the matter together, and the views there presented are substantially those which I held at the time, as it was Dr. Packard's desire to arrive at an impartial judgement.

It was thought strange when it was proved that Colias Keeivaydin and C. eurytheme were seasonal forms of a single species. Still stranger did it seem when Mr. W. H. Edwards proved by breeding that C. eriphyle (alias Hagenii) was also a form of eurytheme, but even after this I was not quite prepared for the conclusiton, forcced upon me by irresistible facts, that in this locality the orange and yellow forms were not only of one species, but actually alternated seasonally, the former being the summer, and the latter the winter form.

1. M. Brucei.

Male.—Expands from 1.5 to 1.7 inch. Upper side brown-black, marked with spots of red and yellow in transverse bands; there are three well marked varieties, in one of which red predominates, sometimes almost to the exclusion of yellow; in another red and yellow, much as in other allied species; on the third much yellow, very little red; in all the spots are small, so that the black surface is more exposed than in many species.

Egg.—Nearly spherical, a little higher than broad, somewhat flattened at base and slightly depressed at top; surface smooth; crossed near the top—at about one fifth distance from top to base—by two to four parallel rows of raised points, about 22 in the full circle; these seem to be placed in vertical lines; in some examples the rows are nearer together than in others, and there is oftern irregularity in the number or position of the points, some of the series wanting, or misplaced, in this last case lying between the rows. Color pale green. Duration of this stage four to five days.

Quite a number of our Coleoptera are known to associate in their imago or perfect state with the Formicariæ—comprehensively, ants. Very little, perhaps nothing, is known of the larval and pupal life of any of these beetle. Some, like Batrisus bistriatus, probably never leave the ants; but others, like the species of Cremastochilus, desert them in the spring, whether afterwards to return and propagate among them is an open question.

(1) Asthichus arizonensis n. sp.

♂. Length .04 inch. Steel blue, finely scaly, with a slight metallic tinge on thorax; the knees and tarsi white. Antennæ dark blue, the funicle joints excised, pedunculated, with whorls of very long hairs. Wings hyaline; veins pale, the marginal vein very long.

Hab.—Arizona.

Egg.—Fusiform thick in middle, tapering to a small rounded summit; marked by about 18 longitudianl ribs, these being low, narrow, the spaces between flat and crossed by many fine ridges. Color yellow-green. Duration of this stage about four days.

A list of all the known species of terrestrial Arthropods of the Labrador coast may prove convenient as a starting point for future investigations. Hence I have, besides enumerationg the species of ohter groups, revised the list of Lepidoptera—Mr. Sucdder kindly contributing the list of butterflies. For changes in the names of the Torticidæ I am indebted to Prof. C.H. Fernald's excellent catalogue of the Torticidæ of the United States.

A study of the American genus Lagoa in its various stages of growth shows a manifest approach to the present group, so that we are warranted in following the Dasychirinœ with the Cochliinœ. This sub-family is remarkable for its peculiar larvæ, called “slug caterpillars” or “saddlebacks.” The first name is given on account of their snail-like appearance, the form being elliptical or oval, the false feet replaced by swellings on the abdominal segments, so that the larva lies flat and close tothe leaf. The head is also retractille.

We have seen, Can. Ent., xix., p.156 et seq., that the Bombycidæ, or Spinner Moths, are characterized, as a whole, by their short, pecitnate antennæ, ample, velvety wings, thich bodies, small heads and sluggish habit, while the pupa is usually contained in a cocoon made by the caterpillar in its last stage. To almost all these characters the sub family groups offer exceptions, and we have seen that while Dr. Packard follows the tradition of Harris, Latreille and Linneaus, modern German writers break up the family into independent groups limited by structural features taken from the imago.

About the middle of last November Miss Annie M. Wittfeld, whose untimely death I have spoken of elsewhere, wrote me that she had taken a butterfly of a species which she had never seen before, while it was laying eggs on purslane. She confined the buttefly with the plant and obtained 74 eggs. She confined the butterfly with the plant and obtained 74 eggs. It was like a Danais, she said, but the caterpillars were like a Vanessan.

Egg.—Diameter .04 inch, low conoidal, a prominent bulging ridge found the base of one half of a hundredth of an inch on each side, so that inside of this the egg is .03 inch; striated with 38 prominent longitudinal striæ, of which 12 reach the small micropyle, shallow transverse striæ; apex small, not depressed. Color dull, pale, brownish olive. Duration of this period not known, but at least 194 days.

It has been a fortunate thing for the study of butteflies in this country that the earlier students were those who devoted themselves very largely to the natural history of these insects rather than to their systematic or descriptive study. It was indeed a natural and healty result of the proverty of extrenal resources in earlier times; and I have though that it would not be devoid of interest to present a few facts concerning the life and iindustry of one of these earlier naturalists, who worked to such good purpose and accomplished so much, under circumstances that would now seem very forbidding.

Egg.—Conodial, round-topped, nearly as broad at base as high, the top depressed; marked by about 19 thin, elevated, vertical ribs, one half running from base to summit, the others but four fifth or more the distance; the spaces between crossed by many low horizontal ridges; the micropyle surronded by two or three circles of very fine depressions, outside of which are rows of very large four or five-sided depressed cells; color yellow-green. Duration of this stage about ten days.

EGG.—Shaped generally like the eggs of this Group, higher than broad, about as 15 to 13, the number of ribs 30, conodial truncated, the middle but little narrower than the base, the upper half sloping rapidly, and convex; about one third the ribs reach the summit, the rest end at from one half to two thirds distance from base; the spaces between the ribs excavated roundly, and crossed by many fine ridges; the micropyle in centre of a rosette of fine minute flat cells, outside of which are four irregular rings of excavated cells, generally long and narrow, varying from sub-crescent to five-sided; color greenish-yellow. Duration of this stage 10 to 11 days, in July.

The discovery by Mr. W. H. Edwards that Colias Hagenii is only a form of C. Eurytheme, as detailed in the Canadian Entomologist for September, while very interesting in itself, serves also to show that this genus is still in a very unsatisfactory state. That a form which so closely resembles Philodice that nine entomologists out of ten would take it for that species, should turn out to be a variety of Eurytheme, emphasizes Dr.Hagen's statement “that reliable differences between these two well known forms are still a want.” Mr. Edwards has also comet to the conclusion that Hagenii is the same as teh form previously named C. Eriphyle by him, as detailed in the November number of the Canadian Entomologist. A glance at the history of this form will be found interesting.

Having been requested by my friend, Mr. Wm. H. Edwards, to make observations on Danais Archippus during the seasons of 1887 and 1888, and subsequently having written to him the result of such observations, he requested me to publish in the Canadian Entomologist the substance of what I had already written him in my letter. I wrote out a paper about July 5th, which, however, was lost in the mails, and the paper now sent is a partial copy of the original, though somewhat altered, as the first was over four months old.