1878.] 69 [Scudder. 
carina; posterior lobe searcely punctate. Tegmina a little longer 
than the body. Terminal segment of ¢ abdomen prow-shaped, 
straight, ending in a blunt conical projection; supraanal plate trian- 
gular, bluntly pointed, the sides a little convex, rather longer than 
broad, the marginal apophyses of the preceding segment forming dis- 
tinct, pointed, triangular teeth. Anal cerci large, flabellate, upturned, 
twice as long as the mean breadth, tapering but little, the extremity 
broadly rounded. 
The general color is cinereo-plumbeous, the head and prothorax 
dusky above, with the usual black belt behind the eye, extending 
over the anterior lobe of the prothorax; antenne pale castaneous, 
paler at base; tegmina with a line of faint fuscous blotches in the 
middle field; hind femora livid brown on the outer face, heavily 
marked with rufo-fuscous in oblique bands, orange beneath; hind tib- 
iz rather dark glaucous with black spines. . 
Length of body, 16.5 mm.; of antenne, 7.2 mm.; of tegmina, 13.75 
mm.; of hind femora, 9.5mm. 1 ¢, South Park, Col. (8-10,000 ft.), 
taken Aug. 11 and 16. 
In all its structural features, this species closely resembles the pre- 
ceding, of which it may be considered as a subalpiue representative. 
It is, however, much smaller and its general appearance is very differ- 
ent, wholly lacking the mottled markings of that species. 
76. Melanoplus foedus. Of medium, or rather large size. 
Head rather large, not elevated, slightly arched. Eyes pretty large 
but not prominent; vertex between the eyes as broad (¢) or half as 
broad again (2) as the first antennal joint; foveola shallow (2) or 
moderate (¢), with low, stout, nearly parallel bounding walls, and 
scarcely expanding in front; frontal ridge stout, well advanced, sub- 
equal, scarcely enlarging downward, above flat at the ocellus, and 
below a little and broadly sulcate. Pronotum simple, the posterior 
lobe coarsely and faintly punctate, expanding very slightly, and, 
on either side anteriorly, depressed a little above; the anterior lobe 
narrowed a little in front, but above only, both the transverse sulci 
equally distinct and continuous throughout, median carina slight and 
confined to the posterior lobe, lateral carinze subobsolete. Tegmina 
extending a little (2), or considerably (¢), beyond the tip of the 
abdomen. ‘Terminal ventral segment of ¢ abdomen scoop-shaped, 
but slightly produced at the apex, the edge entire; supraanal plate 
triangular, bluntly pointed, considerably longer than broad, the sides 
nearly straight, slightly puckered in the middle; the marginal 
