168 PROCEEDINGS OF THE NATIONAL MUSEUM. 



narrowed above the ocellus, as broad as the interspace between the 

 eyes, feebly depressed at the ocellus, punctate throughout; eyes rather 

 large, not very prominent, as long as the intraocular portion of the 

 genae; antennae testaceous. Pronotum gently widening posteriorly, 

 the front margin scarcely convex and feebly and roundly emarginate 

 in the middle, the hind margin obtusely angulate, the angle rounded, 

 the median carina distinct and rather sharp on the metazona, feeble on 

 the prozona and obsolete between the snlci; disk of prozona plano- 

 convex, passing almost insensibly but with a broadly rounded angle 

 into the sub vertical lateral lobes, the lateral carinae feebly indicated 

 on the metazona; mesial half of the disk of the prozona very dark 

 fusco-olivaceous, bordered on either side by luteous; lateral lobes and 

 metazona luteo-testaceous with an olivaceous tinge, the upper half of 

 the lateral lobes of the prozona occupied by a broad fusco-fuliginous 

 glistening band, failing to reach the anterior border and broader on 

 the posterior than on the anterior section; prozona smooth, quadrate, 

 a very little longer than the closely punctate metazona. Prosternal 

 spine long, slightly appressed cylindrical, blunt-tipped, very feebly 

 retrorse; interspace between niesosternal lobes of male about half as 

 long again as broad, ths metasternal lobes attingent. Tegmina scarcely 

 attaining the tips of the hind femora, moderately broad at base, dis- 

 tinctly tapering, the tip narrow and strongly rounded, brownish testa- 

 ceous without markings; wings pellucid, the main veins testaceous, 

 the others blackish fuscous. Femora yellowish brown, the hind pair 

 much iufuscated on the outer face, especially above, the upper surface 

 broadly marked with fuscous near base at tip, and with two other 

 nearly confluent belts between, the inner face feebly and the lower face 

 distinctly reddened ; genicular arc black ; hind tibiae uniformly red, the 

 spines black nearly to the base, eleven in number in the outer series. 

 Extremity of male abdomen broadly clavate, strongly upturned, the 

 supraanal plate rather long, triangular, with rounded sides, acutangu- 

 late apex, the basal two thirds of the lateral margins broadly elevated, 

 the median sulcus narrow and deep, extending over two-thirds of the 

 plate, bounded by moderate walls; furcula consisting of a pair of very 

 broad, parallel, elongated, strongly flattened pads with rounded tips, 

 almost reaching the middle of the supraanal plate, their outer margins 

 broadly rounded; cerci consisting of coarse and broad, punctate 

 laminae, feebly narrowing in the basal half, beyond a little upturned, 

 equal, very broadly rounded at apex, straight or feebly outcurved 

 apically, not so long as the supraanal plate; infracercal plates visible 

 only at extreme base; subgenital plate enormously produced and 

 elevated (more abruptly elevated than represented in the figure), the 

 apical margin deeply emarginate laterally, and well rounded and entire 

 mesially. 



Length of body, male, 27 mm. ; tegmina, 18 mm. ; hind femora, 14 mm. 



One male. Salt Lake, Utah, August 30, L. Bruner (U.S.N.M. 

 Kiley collection). 



