39. Notonecta insulata.

NOTONECTIDE.

NOTONECTA, Linn.

Notonecta insulata, KIRBY, Fauna Bor.-Amer. iv, p. 285, No. 399. Collected in the Milk River region.

Corixa sutilis, UHLER, Bulletin of U. S. Geog. Survey of the Territories, vol. ii,
No. 5, p. 73, No. 1.

Inhabits standing water in the Milk River region.

42. Corisa interrupta.

Corixa interrupta, SAY, Journ. Acad. Philad. vol. iv, p. 328, No. 1. Obtained in the vicinity of the Milk River, Montana. 43. Corisa vulnerata.

Corixa vulnerata, UHLER, Proc. Acad. Nat. Sci. Philad. 1861, p. 284. Also from the Milk River region.

Membracis bubalus, FAB. Ent. Syst. vol. iv, p. 14.

From Pembina, from the Milk River region, and from near Mouse River.

45. Ceresa diceros.

Membracis diceros, SAY, Long's Exped. Appendix, p. 299.

From the Mouse River region, August 17.

STICTOCEPHALA, Stål.

46. Stictocephala inermis.

Membracis inermis, FAB. Ent. Syst. vol. iv, No. 15.

Found near Pembina, at Turtle Mount, July 24, and near Mouse River, August 17-29.

47. Thelia univittata.

THELIA, Amyot & Serv.

Membracis univittata, HARRIS, Ins. Injur. to Veg. p. 221.

From Turtle Mount, July 23 and 24.

Fulgora sulcipes, SAY, Journ. Acad. Philad. vol. iv, p. 335.

From Mouse River region, August 17-29.

49. Liburnia vittatifrons.

LIBURNIA, Stål.

Liburnia vittatifrons, UHLER, Hayden's U. S. Geol. Surv. of the Territ. Bulletins, vol. ii, No. 5, p. 85.

Collected on the plains of Montana.

CERCOPIDE.

APHROPHORA, Germ.

50. Aphrophora quadrinotata.

Aphrophora quadrinotata, SAY, Journ. Acad. Philad. vol. vi, p. 304, No. 2. Obtained at Turtle Mount, July 24.

51. Philanus lineatus.

PHILENUS, Stål.

Cicada lineata, LINN. Syst. Nat. (ed. 12), p. 709, No. 31.

Collected near Pembina, June 19-29; Turtle Mount, July 23; and in the vicinity of Milk River.

52. Proconia costalis.

TETTIGONIDE.

PROCONIA, St. Farg. & Serv.

Tettigonia costalis, FAB. Ent. Syst. Suppl. 516, Nos. 22-23.

Obtained at Pembina, June 29; at Turtle Mount, July 24; and near Mouse River, August 17-29.

TETTIGONIA, Geoff.

53. Tettigonia hieroglyphica.

Tettigonia hieroglyphica, SAY, Journ. Acad. Philad. vol. vi, p. 313, No. 6. Inhabits Pembina, found on June 19, and at Turtle Mount, July 24.

Tettigonia octolineata, SAY, Journ. Acad. Philad. vol. iv, p. 340, No. 1. Collected from the vicinity of Mouse River, August 17-29.

55. Jassus irroratus.

Subfamily JASSINA.

JASSUS, Auctor.

Jassus irroratus, SAY, Journ. Acad. Philad. vol. vi, p. 308, No. 7. Collected in the vicinity of Pembina, June 19.

56. Jassus unicolor.

Bythoscopus unicolor, FITCH, Cat. N. Y. State Cabinet, p. 58, No. 2. Obtained at Turtle Mount, July 24, and at Pembina in June.

57. Jassus twiningi, n. sp.

Yellow or greenish, moderately robust, form similar to that of J. irroratus, Say, with the head not angular in front, but regularly lunate and sharp-edged, with the cranium flat, bright yellow. Face and beneath pale testaceous, or clear yellow. Pronotum pale russet-brown, with a medial straight line, two oblique lines, and a spot each side posteriorly bluish; at the anterior and outer angles a yellow spot, which runs down on the side. Scutellum pale on the disk, tinged with orange each side of tip, and with a larger spot at each basal angle. Hemelytra pale ochreous, tinged with russet, with white spots in the cells of the clavus and in some of those near the tip of the corium; the apex with a brown cloud; an oblique, brown band runs outwards and forwards from the tip of the clavus, but stops before reaching the costal margin; apex of the clavus dark brown, with the extreme tip minutely white; nervures pale, some of the cross-nervules of the costal margin, particularly at tip, terminating in a minute black dot, the ante-apical cross-nervule of the valvular portion of the tip dark brown. Legs pale testaceous. Abdomen chrome-yellow, with the incisures black.

Length to tip of venter 5mm; width of pronotum 2шm.
Only females have been examined.

The wing-covers are a little longer than the abdomen, and slightly valvular at tip on the inner side.

Obtained at Turtle Mount, July 24, and at Pembina in June.
Named in honor of Major W. J. Twining, Corps of Engineers, U. S. A.

Two other species of Jassus are in the lot from Pembina, but they are too much altered to admit of description.

58. Deltocephalus sayi.

DELTOCEPHALUS, Burm.

Amblycephalus sayii, FITCH, Catal. N. Y. State Cabinet, p. 61, No. 2. Collected in the vicinity of Pembina.

59. Deltocephalus configuratus, n. sp.

Robust, pale yellowish-testaceous, polished, inscribed with brown, white and black. Face faintly brownish each side, with a series of graduated, wavy, transverse lines each side of front, and on the middle is a

longitudinal straight line; vertex bluntly triangular, its apex white, and bounded inferiorly by a brown, minute, arcuated line; the edge white, bluntly rounded; cranium with a broad and long brown line each side, which tapers anteriorly, invaded in front by a slender band and by a broader oblique line each side posteriorly, both white; the broad lateral and the central depressed line also white; clypeus white, the rostrum dull ochreous, tipped with piceous. Pronotum white, with six brown lines, of which the two middle ones are broader and longer, and between them are two very dark brown points; beneath the posterior angle of the eye is a spot, and on the side of the pronotum, as well as on its lower margin, is a brown line; cheeks with a large brown spot and minute specks in the darker specimens. Pleura blackish, the segments margined with testaceous or yellow. Scutellum faintly embrowned (?), suffused with yellow (8), and marked with a brown spot each side of base, with a smaller spot each side of the middle, and with a submarginal line each side of tip. Corium translucent, pale testaceous, margined all around with white, the nervures white, and the areoles of the disk and tip margined with fuscous; four apical areoles, which are large and angular. Wings milky-white, a little nebulous exteriorly towards the tip. Legs yellowish, the femora banded and the posterior pair streaked with brown; the tibiæ with longitudinal series of brown dots; apical two-thirds of the tarsi piceous. Abdomen black, the fore and hind margins of the segments, and usually two or three of the posterior segments testaceous; connexivum margined more or less greenish-yellow. Last ventral segment of the female triangularly lobed on the middle of the hind margin, and emarginated each side of the lobe. Inferior genital covers long, suboval posteriorly, the margin situated inferiorly and with a short groove; at the upper angle is a pencil of stiff bristles; the sheath supporting the penis is shovel-shaped, beset with bristles, a little sinuated each side, where also a long stylet projects backwards. Length to tip of abdomen (3) 4mm, (9) 5mm. Width of pronotum 1.5mm.

The female is paler than the male, and has less fuscous on the hemelytra. In both sexes, the hemelytra are shorter than the abdomen. Collected in the Milk River region in Northern Montana.

A species of Psylla is in the collection from the vicinity of Pembina, bat it is too much altered to admit of description.

ART. XXIII.-ON THE LEPIDOPTERA COLLECTED BY DR.
ELLIOTT COUES, U. S. A., IN MONTANA, DURING 1874.*

BY W. H. EDWARDS.

The butterflies were few in number, but embrace some interesting species, and at least two that are new. They were taken at various points on the forty-ninth parallel, in Montana, between 26th July and 26th August, a season of the year not favorable to collecting these insects, being too late for the early broods and too early for the autumnal.

PAPILIONIDE.

1. Pieris protodice, Boisduval.

2. Pieris occidentalis, Reakirt.

A few specimens were taken early in August at the point of crossing Milk River and beyond. P. protodice ranges over the continent from New York to California, and on the western coast is found in British Columbia. It is, however, much more abundant to the eastward, and in the Ohio Valley is extremely common in the months of August and September. So far as appears, it is single-brooded, and passes the winter in chrysalis. The larvæ feed upon cabbage, horse-radish, and allied plants.

P. occidentalis is a Western species, not known this side of the Rocky Mountains, but ranging from Colorado to the Pacific. It may be distinguished from protodice by the more rounded hind margins of primaries, and by the arrangement of the curved band of black patches ou the discs of the same wings, there being a patch near the inner margin which completes the band. The under side is paler and more yellowdusted than is the other species.

3. Colias keewaydin, Edwards.

This species occupies the same territory with the larger and deepercolored orange species, C. eurytheme, Boisduval, and may perhaps yet prove by breeding from the egg to be a variety of that; but, till so proved, it is sufficiently distinct to warrant its being regarded as a true species. These orange Coliades are found from Illinois to the Pacific and as far south as Arizona. Their larvæ feed on buffalo-grass and species of clover, and that of Colias eurytheme so closely resembles the larva of C. philodice, the common species of the Eastern States, that it can scarcely be distinguished from it.

[*See note, p. 481, anteà.-ED.]