It is ten years since Prof. Comstock published his list of North American Coccidæ*, and as the work done since that time is scattered through very various publications, it seems opportune to present a check list, form which the student can learn precisely what species are now credited to our fauna.

There are still a few species of Agrilus in our fauna whose food plant is unknown, Any contribution in that direction may, therefore, be of interest. It is a genus that seems to be much neglected bv collectors, owing undoubtedly to the difficLrlty met with in separating some of the species. There are several seemingly difiicult ones, however, which are stamped with such distinct characters as to make their study exceedingly interesting. With Dr. Horn's valuable paper, “The Species of Agrilus of Boreal America,” and a well-trained eye, one should be able to get along without much assistance. That does not apply to myself, for it was only after Mr. Blanchard kindly undertook to help me out that my material was properlY labelled,

On July 24th, 1893, I received a number of puapæ of Exilis, made of the road, and three nearly adult larvæ (after the last moult), sent me by Mr. T.D.A. Cockerell, at Las Cruces, New Mexico, and found on flowers of Atripex canescens, of which a plentiful supply was also sent.

During the past summer, while on a visit to the northern portion of this State, my attention was attracted to the presence of numerous mudcells on the lower surface of stones lying along the bands of the Wapsipinicon River, These cells, most of them empty, with one end forced off, somewhat resembled the single one with which some or our common mud-wasps start their establishment of the ceilings of little-used rooms, or on the rafters of outhouses, but very much smaller. The largest measure about 12 mm, in length and 8 mm, in breadth, while the small ones are only 5 mm. long and 2.5 mm wide.

Monostegia quercus-coccineŒ, n .sp.

Eggs apparently inserted by a series of thrusts of the ovipostior parallel to the midrib of the leaf. The saw cuts under the upper epidermis are confluent, forming a long blotch over 1 mm. wide and about 20 mm. log, running close to the midrib. The larvæ feed gregariously, eating the lower epidermis and parenchyma.

I have observed the egg laying of the following species of Lepidoptera in the vicinity of the Yosemite Valley, California.:-

Danais archippus.—Oviposits on the tender leaves near the flower bud of Gomphocarpus cordifolius.

Argynnis epithore.On the underside of the leaves of Viola ocellata.

Argynnis egleis (Highland variety).—On pine burrs, pine leaves, sticks and stones, on the shaded side and as far underneath as is possible for the ♀ to get.

In the Ent. Am.,1889, pp. 33–34, is a note by Mr. T. D. A. Cockerell, F.Z.S., “On the origin of the genus Anthocharis, Bdv., (= Euchloë, Hb.),” and from his remarks on p.34, it would appear that the larva of Pieris protodice and that of Anthocharis ausonides are practically identical, Mr. Cockerell's assumption being based on a letter received from Mr. W. H. Edwards.

As a supplement to my list of additions to Canadian Coleoptera published in Can. Ent., Vol, XXI., I beg to submit the following list of species taken since 1889, in Canada, and, as far as I can learn, not recorded in any of the published lists.

In the identification of species I have been aided by Mr. Ulke and Dr. Hamilton.

In a lot of flies sent me from Illinois, by Professor S. A. Forbes, I find a most remarkable species, which I am satisfied must be located in the Syrphidæ, though the wing shows no sign of the spurious vein, and the first posterior cell is open. The third antennal joint bears a terminal arista, which character is shared by only two previously known North American genera; but the remarkable charater of the fly lies in its hind tarsi.