Oneida luniferella, n. sp.—Tongue blackish with some light gray scales; labial palpi and face light gray; antennæ blackish gray; antennal protection light gray at base, becoming blackish gray towards summit; thorax gray, patagia lighter, becoming nearly white posteriorly; abdomen gray with black scales intermixed, somewhat washed with fuscous, and often stained with yellowish. Fore wings light gray at base to raised scale ridge immediately before the first cross-line; this line is white, rounded from costa to median vein, and thence to inner margin, edged on both sides with black and preceded by a scale ridge which is reddish brown in colour; middle field light gray, glistering, slightly powdered with blackish scales, this colour reaching to outer margin posterior to vein 5; near middle of field and between vein 1 and median vein a raised scale tuft, blackish.

I have just received from Mr. James Fletcher a small bottle of scales found on plum at Queenston, Ontario. He writes concerning them: “Dead scales picked from a plum tree in the Niagara district, where it was very abundant on plums and much rarer on peach trees growing amongst the plums”

Directiy I saw these scales, they struck me as something unusual, and yet I rather expected they would prove to be some form of L. persicœ. Unfortunately they were full of the mycelium of a fungus (doubtless Cordyceps), as well as in some cases containing a Chalcidid parasite, so that their specific characters were very hard to make out. The fungus, which must be a very important check to their increase, was not noticed on examination with a lens; but on boiling the sacles in liquor potassæ, they stained the liquor brown, and a microscopic examination showed the fungus quite plainly. Of course, from mere mycelium no determination could be made. I saw in one case what looked like germinating spores, but perhaps in this I was mistaken.

Robinsonia Grotei, sp. nov.—Head white, posteriorly shaded with yellow. Collar white, with a central brown spot. Thorax brown, with a central white line; patagia white, larerally edged with brown. Abdomen dorsally brownish-yellow, with a subdorsal row of small white spots, and a lateral row of small black spots; underneath whitish. Primaries above white, with the margins broadly brown, except at the apex, where the white extends to the fringe; an oblique brown band, from the costal margin at a third from the base to the inner angle, separates the white into two large spaces. Secondaries white, Primaries underneath white, showing indistinctly the markings of the upper surface.

A. Eyes well developed; antennæ with circular iucisions or cleft only on one side; head and thorax usually stout and compact; head rarely angulated in front; lower edge of head and pronotum behind sometimes with combs, abdominal segments and discs of cheeks without … Pulex.

AA. Eyes wanting, or very rudimentary; antennæ with circular incisions.

B. Eyes entirely wanting; head and thorax stout and compact; head angulated in front, truncate several abdominal segments with combs of numerous spines, the whole body heavily bristled … Hystrichopsylla

Elachistus ohioensis (MS.)Ashmead.—Reared from pupæ, in which stage it probably passes the winter; found November 7th, within the shells of beech-nuts, the kernels of which had been attacked and eaten by some kind of larva which had burrowed out these kernels, leaving only a mass of excrement. A hole in the shells indicated an attack similiar to that of some species of Balaninus, though, as I found no larvæ of them, it was impossible to learn their exact nature. Locality, Wooster, Ohio.

Cirrospilus flavicinctus, Riley.—This was described in Lintner's First Report as being reared from Bucculatrix pomifoliella, Clemens, in Missouri, and also New York. My rearings were from Aspidisca splendoriferella, Clem., the cocoons of which were collected near Cleveland, Ohio.

The above-mentioned families of carnivorous water beetles are taken up here by request of the Editor and Committee, because of the great difficulty most students of Coleoptera, especially if they are beginners, find in identifying any of their captures in these groups, or even in separating the species with approximate accuracy. It is to be feared that with marry it will prove difficult to follow the tables herewith presented; but they have been made as plain as circumstances will allow, and care has been taken to follow the best authorities in the selection of characters supposed to mark the respective species, so that by diligent attention to details the user of the paper may hope to co-relate his collcction with our lists.

The new species described below were contained in a collection of saw-flies recently from Mrs. Annie Trumbull Slosson, and were collected on Mount Washington and at Franconia, New Hampshire. The collection was of interest on account of the number of species it contained which are evidently related to a boreal fauna.

Macrophya mixta,n. sp.—♀ Black, with the following parts white: two spots on the clypeus, the labrum, a spot on each mandible, two spots on the occiput pseudocaudad of the ocelli, a narrow line on collar and tegulæ, the anterior coxæ at apex and a narrow line at side, the middle and posterior coxæ at apex, the trochanters, the distal halves of the anterior femora, the anterior tibiæ beneath, the knees of the middle, all the tarsi except the base of the first segment and the apices of the others, a large spot on the posterior coxæ.

Mr. Hulst has been at the pains of taking a sentence of mine as the text of a discourse as to the value of genitalic characters in classification, in the January number of the Canadian Entomologist. Whether this sentence will really bear the edifice Mr. Hulst has erected upon it, is a matter which hardly concerns me. Before either Mr. Smith or Mr. Hulst wrote, I had pointed out the value of the genitalia in generic groupings, in this following Lederer, as an accessory character. My opinion had been (but this is only an opinion) that morphologically the characters drawn from the male anal appendages were of similiar value to those drawn from the antennæ