1878.] 71 [Scudder. 
obsolete, or subobsolete; transverse sulci of anterior lobe equally 
distinct and generally continuous, or broken only at the median 
carina; lateral caring distinct on the posterior half of the prothorax. 
Teemina abbreviated, about two-thirds as long as the abdomen. 
Terminal ventral segment of ¢ abdomen scoop-shaped, the extrem- 
ity a little produced and elevated, entire; supraanal plate shaped as 
in M. fedus, the marginal apophyses of the preceding segment con- 
sisting of a pair of minute, parallel, distant, tubercular teeth, twice 
as long as broad. Anal ¢erci simple, straight and subequal, being 
contracted a little in the middle, nearly four times as long as the 
mean breadth, directed upward and backward, and the apical upper 
third incurved and externally tumid, the tip broadly rounded; basal 
tooth of lower valves of 2 ovipositor sharp, prominent, triangular, 
but much longer than broad. 
The general color is fusco-plumbeous above, dark clay yellow 
below; face and cheeks dull plumbeous, flecked with griseous, the 
top of the head dusky, and behind the eyes a piceous band extend- 
ing over the upper part of the deflected lobes to the posterior sulcus, 
and sometimes, as a fuscous cloud, beyond it; antenne ferruginous, 
yellowish toward base, dusky toward tip. Tegmina tapering, the 
middle line scarcely marked by faint paler and darker flecks. Hind 
femora blackish externally, with broad angulated patches of dirty 
clay yellow; beneath pale reddish, and at tip black; hind tibie red, 
with a greenish base, mostly obscured by a black or fuscous annulus, 
and armed with black spines. 
Length of body, ¢, 18 mm., 2, 23 mm.; of antenne, do, 9.5 mm., 
2 9.5 mm.; of tegmina, 7, 10 mm., 2, 11.5 mm.; of hind femora, 
dg, 10.75 mm., ?, 12mm. 1¢,1%. Colorado (5500 ft.). H.K. 
Morrison. 
This Melanoplus belongs to the same group as the preceding, and 
approaches most closely in character M. rectus Scudd., a rare New 
England species. 
78. Melanoplus interior. Of medium size. Head not ele- 
vated, scarcely arched; eyes moderately prominent; vertex between 
the eyes rather broader than (¢) or nearly twice as broad as (?) the 
first antennal joint; foveola exceedingly shallow and inconspicuous; 
frontal ridge subequal, flat above, depressed at the ocellus, but 
scarcely sulcate. Pronotum simple, the dorsal field broadening, 
though only slightly, throughout, the posterior lobe subrugulato- 
punctate, the median carina distinct throughout, the lateral carinz 
