194 PROCEEDINGS OF THE NATIONAL 



outer face largely blackish fuscous, rnesially interrupted narrowly with 

 a very oblique luteo-testaceous cloud, giving it a broadly and very 

 obliquely bifasciate appearance, intensified by the bifasciation of the 

 upper surface and upper portion of the inner face 5 beneath luteo-rufes- 

 cent or pale carmine; hind tibiae bright red, or less frequently greenish 

 glaucous, with a subpatellar fuscous spot, the spines black except at 

 base, ten to twelve in number in the outer series. Extremity of male 

 abdomen feebly clavate, a little upturned, the supraanal plate trian- 

 gular, acutangulate at tip, the sides full at base, throughout tilted 

 upward, the median sulcus percurrent, deep, rather broad, the sharply 

 tectate walls fading apically ; furcula consisting of a pair of slight and 

 delicate, divergent, acuminate fingers, not depressed, rarely reaching a 

 third way across the supraanal plate ; cerci rather small, hardly more 

 than three times as long as broad, tapering gently in the basal half, 

 beyond equal, and this portion bent a little inward and feebly sulcate 

 externally, the apex well rounded; subgenital plate rather small, broad 

 at base, apically as broad as long, the apical margin abruptly and 

 slightly elevated but not prolonged, a little compressed and notched. 



Length of body, male, 19.5 mm., female, 19 mm. ; antennae, male, 8 

 mm., female, 6 mm.; teginina, male, 13.5 mm., female, 12.5 mm.; hind 

 femora, male, 10 mm., female, 10.5 mm. 



Twenty-eight males, 23 females. Mountains near Lake Tahoe, Placer 

 County, California, September, October, Heushaw, Wheeler's Expe- 

 dition, 1876; Placer County, California, September (U.S.X.M. Eiley 

 collection) ; Truckee, Nevada County, California, October 10. 

 . 



31. MELANOPLUS ATER, new species. 

 (Plate XIII, fig. 2.) 



Very dark brownish fuscous with a feeble ferruginous tinge. Head 

 not prominent, dull fusco-olivaceous, delicately blotched with fuscous, 

 above wholly fuscous, with a broad, piceous, postocular baud ; vertex 

 gently tumid, feebly elevated above the pronotum, the interspace 

 between the eyes slightly (male) or considerably (female) broader than 

 the first antennal joint; fastigium very declivent, rather (female) or 

 very (male) sulcate throughout; frontal costa hardly percurrent, espe- 

 cially in the male, a little contracted above, below broader than (male) 

 or fully as broad as (female) the interspace between the eyes, shallowly 

 sulcate at and, in the male, below the ocellus, punctate throughout ; 

 eyes moderately large, not very prominent, distinctly longer than the 

 infraocular portion of the geuae; antennae rufo-testaceous, in the male 

 about two- thirds as long as the hind femora. Prouotum rather short, 

 feebly expanding posteriorly, the lower part of the lateral lobes more 

 or less tinged with luteous, the upper half of the prozona with an 

 obscure fusco-piceous or fuscous baud, the disk nearly plane but 

 slightly tectate on the prozona, the median cariua percurrent but 



