1918.] NATURAL SCIENCES OF PHILADELPHIA. 223 



bristles which are directed ventro-cephalad; inter-antennal pro- 

 tuberance equal to about one-half the least width of the inter-ocular 

 region: eyes very prominent when seen from the dorsum, their con- 

 vexity directed cephalo-laterad, when seen from the side their basal 

 outline is reniform-ovoid, the narrower portion ventrad: antennae 

 reaching at least to the apices of the wings, the proximal joint enlarged 

 but simple : palpi slender, the third and fifth joints subequal in length, 

 the third joint slightly arcuate; fourth joint about two-thirds as 

 long as the third joint; fifth joint trumpet-shaped, the distal margin 

 very faintly oblique-truncate. Pronotum transverse, strongly and 

 regularly narrowing cephalad, the width at the caudal margin about 

 one-third greater than the length of the pronotum, the dorsum broadly 

 and regularly rounding into the lateral lobes; surface of the dorsum 

 and lateral lobes with scattered curved bristles, the margins, but 

 particularly the cephalic, with a regularly placed series of smaller 

 bristles; cephalic margin of the disk faintly arcuate, the caudal mar- 

 gin more distinctly but weakly arcuate; medio-longitudinal impres- 

 sion distinctly but not deeply indicated on the greater portion of the 

 disk, transverse impression distinct, median, arcuate: lateral lobes 

 distinctly longer than deep, subrectangular; cephalic margin oblique, 

 the ventro-cephalic angle rounded obtuse, ventral and caudal margins 

 each straight, the ventro-caudal angle narrowly rounded rectangu- 

 late, the lobes well inbent ventro-caudad. Tegmina broad, distinctly 

 broader than the body, in length slightly surpassing the apex of the 

 body: lateral field broad, subequal in depth; costal margin in 

 greater portion straight, very faint intimation of an emargination 

 mesad, arcuate distad; mediastine vein arcuate proximad and dis- 

 tad, straight for the greater portion of its length, little distant from 

 and subparallel to the humeral vein in the proximal half, the area 

 between these veins crossed by numerous straight transverse nervures ; 

 costal section of the marginal field with three incomplete veins, the 

 third of which is a ramus of the mediastine vein: humeral and dis- 

 coidal veins closely placed, subparallel; median vein parallel to the 

 other veins of the humeral trunk, sUghtly weaker; stridulating vein 

 regularly arcuate; ulnar vein regularly sigmoid; axillary veins three 

 in number of which the third is strumose ; post-axillary veins three in 

 number; speculum roughly diamond-shaped, but slightly longer 

 than broad, the sutural angle the only one of the four which is dis- 

 tinctly rounded, the figure within the speculum complete, ovoid- 

 subcordiform, its area coriaceo-rugulose ; apex of the dorsal field of 

 the tegmina slightly acute-angulate. Wings strongly caudate, pro- 



