306 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



sides, laterally compressed just before the apex and the margin a little 

 tortuous, the apex itself strongly acutangulate but blunt, the median 

 sulcus percurrent, but nearly effaced at the constriction; furcula con- 

 sisting of a pair of slender, subcylindrical, pretty strongly divergent, 

 arcuate, regularly tapering, acuminate fingers, not a third as long as the 

 supraanal plate; cerci consisting of spatulate incurved pads, hardly 

 three times as long as the basal breadth, gently and slightly tapering 

 from base to middle, beyond well rounded, nearly as broad as at base, 

 exteriorly hollowed, and reaching only to the compressed part of the 

 supraaual plate; irifracercal plates forming broad tapering cushions 

 for the cerci to rest upon, as long as the supraanal plate; subgenital 

 plate forming a feebly flaring quadratic scoop, the apical margin feebly 

 elevated laterally and between these elevations feebly notched. 



Length of body, male, 20 mm., female, 22.5 mm.; antennae, male, 10 

 mm., female, 8.75 mm.; tegmina, male, 1C mm., female, 16.5mm.; hind 

 femora, male, 11.5 mm., female, 13 mm. 



Three males, 3 females. Fort Eobinson, Dawes County, Nebraska, 

 August (L. Bruner); West Point, Cuming County, Nebraska, July 

 (U.S.N.M. Eiley collection); Yellowstone, Montana, August (L. 

 Bruner). Since description, Mr. W. S. Blatchley has sent me speci- 

 mens from Lake County, Indiana. 



Bruner states that this species feeds on Artemisia and prefers u to 

 jump from plant to plant rather than to alight upon the ground." " It 

 occurs both on high and low lauds, but appears to be somewhat partial 

 to old breakings and well-fed pastures of many years' use.' 7 



I suspect that the insect from Minnesota, described by Thomas 1 as a 

 variety of Caloptenus occidentalis, may belong to this species. 



95. MELANOPLUS IMPIGER, new species. 

 (Plate XX, figs. 7, 8.) 



Of moderately large size, above rather light brownish fuscous with 

 a ferruginous tinge, below luteo-testaceous. Head slightly prominent, 

 dull luteo-testaceous, often punctate with olivaceous, with a postocular 

 piceous band, and above much mottled or marmorate with fuscous; 

 vertex gently tumid, considerably elevated above the level of the pro- 

 notuin, the interspace between the eyes fully half as broad again (male) 

 or fully twice as broad (female) as the first antennal joint; fastigium 

 steeply declivent, shallowly and broadly sulcate, sometimes feebly 

 in the female; frontal costa percurrent (male) or scarcely percurrent 

 (female), feebly contracted above but otherwise subequal, as broad as 

 the interspace between the eyes, and so distinctly broader in the female 

 than in the male, feebly but variably sulcate at and a little below the 

 ocellus, punctate throughout; eyes rather large, not very prominent, 

 distinctly longer than the infraocular portion of the genae; antennae 



Rep. U. S. Geol. & Geogr. Surv., V., p. 162. 



