1918.] NATURAL SCIENCES OF PHILADELPHIA, 173 



ventrad: eyes prominent, distinctly elevated dorsad of the vertex, 

 in outline broad ovate, in length twice as long as the infra-ocular 

 portion of the gense: antennae almost twice as long as the combined 

 length of the head and pronotum. Pronotum subsellate, greatest 

 width (caudad) of the disk contained one and one-half times in the 

 greatest length; cephalic margin of disk gently arcuate with a shallow 

 median emargination, caudal margin obtuse-angulate with the 

 immediate angle narrowly emarginate; prozona about one and 

 one-half times as long as the metazona, the latter closely cribroso- 

 punctate, transverse sulci deeply impressed; median carina faintly 

 indicated on the prozona, severed by all the transverse sulci, distinct 

 but low and not sharply defined on the metazona, lateral angles 

 rounded, faintly more evident on the metazona than on the prozona; 

 lateral lobes with their greatest depth contained one and one-quarter 

 times in their greatest dorsal length; cephalic margin straight oblique, 

 ventro-cephalic angle rounded obtuse-angulate; ventral margin 

 arcuato-emarginate cephalad, obtuse-angulate mesad, straight 

 oblique ascending caudad, ventro-caudal angle rounded; caudal 

 margin moderatel}^ concave. Tegmina reaching to the tips of the 

 caudal femora, apex rounded. Wings reaching to the tegminal 

 tips. Prosternal spine erect, conical, acute; interspace between the 

 mesosternal lobes quadrate, internal margins of the lobes straight, 

 interno-caudal angles rounded; metasternal lobes very narrowly 

 separated caudad. Furcula present as short spiniform points, 

 between which and the cereal bases are placed on each side a single 

 similar point, the abdominal segment bearing the same sublamellate 

 expanded over the cereal base: supra-anal plate elongate trigonal, 

 slightly arcuate-emarginate on each side mesad, apex broadly rounded, 

 margins moderately elevated, the median line of the plate finely 

 sulcate proximad, carinate distad: cerci thick at the base, thence 

 tapering to the subequal distal half, moderately arcuate in form, 

 apex blunt, moderately incurved: subgenital plate considerably 

 produced, distal portion strongly compressed with the apex faintly 

 bulbous, this faintly elevated when seen from the lateral aspect. 

 Cephalic limbs as usual in the genus. Median femora with the 

 dorsal genicular teeth short and blunt, the genicular lobes not strongly 

 developed. Caudal femora slightly more than twice as long as the 

 head and pronotum together, rather robust, not surpassing the tips 

 of the tegmina, genicular lobes acute, pattern of the paginse regular, 

 moderately impressed : caudal tibiae slightly shorter than the femora, 

 distal two-thirds expanded, margins there distinctly lamellate, 



