172 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



a little clavate, somewhat recurved, the supraanal plate triangular with 

 slightly convex and slightly elevated lateral margins, subrectangulate 

 apex, and a rather narrow and not very deep percurrent median sulcus, 

 bordered by narrow but rather low and rounded walls ; furcula consisting 

 of a pair of very slender, feebly divergent, tapering, acuminate spines, 

 scarcely a fourth as long as the snpraanal plate; cerci consisting of a 

 feebly tapering, feebly tumid basal half, and a subequal, slenderer, com- 

 pressed apical half, the latter bent feebly inward and slightly upward, 

 rounded apically, the whole a little more than twice as long as median 

 breadth ; subgenital plate with the apical margin feebly elevated, thick- 

 ened and mesially notched, but not deeply. 



Length of body, male, 23 mm., female, 26 mm.; antennae, male, 8.5 

 mm., female, 9 mm.; tegmina, male, 20 mm., female, 22.5 mm.; hind 

 femora, male, 12.25 ram., female, 14 mm. 



Six males, 4 females. Salt Lake Valley, Utah, August 30 (L. Bruner) ; 

 Fort McKinney, Johnson County, Wyoming, July (same) 5 Olmstead's, 

 near Ellensburg. Kittitas County, Washington, July 14, 15, S.Henshaw 

 (Museum Comparative Zoology) ; Ellensburg, Kittitas County, Wash- 

 ington, July 14, Henshaw (same); Spokane, Washington, July 21, 22, 

 Henshaw (same) ; Loon Lake, Colville Valley, Washington, July 25, 

 Henshaw (same); Camp Urnatilla, Washington, June 27, Henshaw 

 (same); British Columbia, Crotch (same). 



Bruner in an unpublished account of this species gives its habitat as 

 "in the mountains near Ogden,Utah, among the low trees and bushes, 

 at an elevation slightly above the highest of the ancient shore lines of 

 Salt Lake; also among the foothills of the Big Horn Mountains, near 

 Fort McKinney, Wyoming." 



In the same manuscript, Bruner compares the present species with 

 M. atlanis, as follows : 



Closely related to M. atlanis in many respects ; from which it is to be distinguished 

 by its somewhat larger size and more robust form, also by its larger head and more 

 prominent eyes. The last ventral segment [subgeuital plate] of the male is shorter 

 and the male cerci are narrower than in the typical atlanis. The color of the hind 

 tibiae is pale glaucous as in intermed'tus instead of red, as is usually the case in 

 typical specimens of atlanix. 



23. MELANOPLUS INTERMEDIUS, new species. 



(Plate XII, figs. 3,4.) 

 Melanoplus intermedium BKUNER!, MS. 

 [Some of the synonymy given under M. atlanis almost certainly belongs here.] 



A medium-sized or rather small species, of slender form, brownish 

 fuscous, dull testaceous beneath. Head slightly prominent, rufo- or fusco- 

 testaceous, more or less heavily flecked with fuscous above, or wholly 

 infuscated, with a broad piceous or fuscous postocular band; vertex 

 gently tumid, a little (sometimes considerably) elevated above the level 

 of the pronotum, the interspace between the eyes fully half as broad 

 again as the first antenna! joint, slightly broader in the female than in 



