22. Atlanticus pachymerus, Burm.— The Shield-back Grasshopper.

Decticus pachmerus, Burm, Handb. der Ent., II., 1838, 712.

Thyreonotus pachymerus, Scudd., Bost. Journ. Nat. Hist., VII., 1862, 453.

Atlanticus pachymerus, Scudd., Can. Ent., XXVI., 1894. 179.

Tortrix conflictana, Walk.— Five specimens: Lethbridge, Macleod and Pine Creek; VII., 8, to VII., 13. Larger and the bands more suffused than Eastern specimens.

Tortrix argentana, Clerck.— Three specimens; Macleod and Lethbridge; VIII., 8 to 15. I have a long series of this species from Western America, south nearly to Mexico, and north to British Columbia, likewise a series from Europe, and every time I examine them I am impressed with the feeling that our American species differs from the European, but further study is required before deciding either way, in the meantime the European name can stand.

If it were necessary to emphasize the need of revision in the Geometrina, the genus Venusia furnishes an excellent example. It has established by Curtis, an English writer, in 1839, with cambrica, Curt., as its type. Since that time, three additional species, according to Mr. Meyrick, from New Zealand have been placed under it. In our own fauna, Dr. Hulst placed three species as its representatives—cambrica, Curt., comptara, Walk., duodecimlineata, Pack.

I am glad that Mr. Taylor has shown in the Feb. Can. Ent. that the “types” of Somatolophia umbripennis and Diastictis festa in the Hulst collection at New Brunswick, N. J., are not the true types. A specimen that contradicts the description cannot be the type, however labelled, unless it can be shown that the author has made an error. I do not think that Dr. Hulst made errors in description in these cases, and I do not think either that the true types were destroyed as Mr. Taylor suggests.

Stethomyia pallida, n. sp.— ♀. Head light testaceous, a few white flat lanceolate scales on the vertex, othewise clothed with sparsely set slender hair-like curved brown scales, nearly as long as the very slender fork scales which occur on the occiput; two light brown bristles project foward between the eyes, and a few around the eyes. The head shows no sign of having been denuded, and besides the slender hair-like scales is covered with a short fine tomentum or frostiness, such as is oftern seen of the thorax of Anophelina.

A series of tables for the identificaiton of Rocky Mountain Coccidæ has been prepared for publication by the University of Colorado. Even now, while these tables await publication, I find myself obliged to add three new species, found here at Boulder; two of them representing genera new to our region. It is a rule of the University of Colorado publications that new species shall not appear for the first time therein, so I present herewith brief diagnoses of the three forms just mentioned.

I suppose that in due course I shall acquire much los and honour and not a little fame for harping in season and out of season to the tune of “Waterbugs.” But I shall feel that my labours have not been in vain if by so doing I can induce others to lauch themselves on the study of theese forms, which are in many respects the most interesting and easily observed and collected of the Heteroptera. In these families much remains to be done.

In a recent sending of parasitic Hymenoptera, bred by Dr. Filippo Silvestri, at the Laboratorio di Entomologia Agraria, Portici, Italy, sent me for names, I find a new Pezomachus, represented by both sexes.

Pezomachus Silverstrii, new species.— ♀. Length, 2.6 mm.; ovipositor a little longer than the petiole of the abdomen. Black and shining, impunctate except a feeble shagreening on the pleura; the metathorax is rounded off posteriorly, and without a trace of a transverse carina; antennæ 21-jointed, the fourth joint a little shorter than the third the flagellum brown-black, the extreme apex of the pedicel, or second joint of antennæ, yellowish; legs black, with the sutures of the trochanters, the apical third of front femora, front tibiæ narrowly at base and more or less beneath, and base of first joint of tarsi, testaceous, the rest of tarsi fuscous or brownish, but a little yellowish at sutures of the joints; hind tibial spurs white.

Xlina nigrescens. sp. nov.— Two males and one female.

Upper part of head and thorax stone-gray, front of head light brown, surmounted by a well-defined umber brown line beneath base of antennæ. This line is continuous along lower margin of patagiæ and ver contrasting from the gray thorax. The thorax is rather short and square. Thoracic vestiture intermixed with flattenedhair. Thoracic crest slightly raised and defined by a patch of dark brown hair. Collar with a faint line near tip, not contrasting. Palpi are reddish-gray, strongly marked laterally with an umber-brown line outwardly.

267. Euxoa nesilens, Smith(Jour. N.Y. Ent. Soc. XI., 192, Dec., 1903). —Described from Calgary and from Brandon, Man. The type is a Calgary specimen in Prof. Smith's collection, and a ♀ co-type is in my own. The description says: “In general appearance it resembles siles, but does not have the black basal streak, nor the blackish suffusion between the ordinary spots. On the other hand, it does have more complete, better marked median lines … Its distinctness is clear, and its association is with basalis, from which, however, it differs obviously in colour.”