374 



PROCEEDINGS OF THE ACADEMY OF 



[Aug., 



and in having the mediastine vein by no means as well marked as in 

 the major-peruviana group it occupies a rather intermediate position. 



Size medium; form elongate, slender, somewhat compressed. Head 

 distinctly broader than the pronotum, the occiput rounded, vertex 

 declivent, fastigium narrow, longitudinally sulcate, apex l^lunt and in 

 contact with the blunt apex of the facial fastigium; eyes subovate, 

 strongly exserted; antenna? elongate, proximal joint as broad as the 

 eye. Pronotum with the dorsum deplanate, slightly sellate; lateral 



Hypcrophora gracilis n. sp. Lateral view of male type. (X 2J.) 



margins subparallel, angulate, subcarinate, the breadth of the disk 

 contained about once and a half in the length, cephalic margin very 

 slightly emarginate, caudal margin arcuate, a distinct but low median 

 carina present on the extreme caudal section of the disk, cephalad of 

 this there is an indication of the same but no carina, rectangulate 

 impressed pattern slightly caudad of the middle; lateral lobes with 

 the greatest depth contained nearly twice in the length, caudal margin 

 subsinuate with a faint trace of a supra-coxal emargination, humeral 

 sinus distinct, rectangulate, the remainder of the caudal margin 

 slightly arcuate and the ventro-caudal angle rather narrowly rounded. 

 Tegmina exceeding the length of the body l^y al^out that of the pro- 

 notum, the greatest width contained about seven times in the length, 

 margins approximating little, except in the apical fifth where the costal 

 margin arches distinctly to the narrowly rounded apex; discoidal vein 

 with four rami, all of which are distinctly sublongitudinal in their 

 middle course, diagonal in the remainder; anterior ulnar vein with no 

 distinct rami in the male, one to two in the female, the vein itself being 

 connected by a short vein with the proximal rami of the discoidal vein. 

 Wings exceeding the tegmina by nearly twice the length of the pronotum, 

 the apex tapering and acute. Terminal dorsal abdominal segment of 

 the male with a short acute process over the base of each cercus and a 



