1918.] NATURAL SCIENCES OF PHILADELPHIA. 205 



elongate and recurved, hook-like, acute styles, in the smaller general 

 proportions, but actually longer tegmina and wings, in the fewer 

 spines on the ventral margin of the caudal femora, in the restriction 

 of the infuscation of the head to the occiput and fastigium, and in the 

 pronotum being broadly bivittate with fuscous. 



Type: cf ; Para, State of Para, Brazil. (C. F. Baker.) [Acad. 

 Nat. Sci. Phila., Tj^e no. 5323.] 



Size medium: form as usual in the genus, with greatly developed 

 tegmina and wings: surface moderately polished. Head broad, 

 strongly transverse, the face markedly flattened, in fact slightly 

 impressed: occiput strongly arcuate transversely, in side view regu- 

 larly rouncUng over the vertex into the face: vertex broad, about 

 one and one-half times as wide as proximal antennal joint, lateral 

 margins subparallel; lateral ocelli ovate, rather small, median ocellus 

 large, elliptical: eyes rather prominent, weakly projecting dorsad, in 

 basal outline elongate-ovoid: antennse imperfect, at least surpassing 

 the apices of the tegmina and wings, heavy, brittle: third palpal 

 Joint moderately arcuate when seen from the side; fourth joint 

 slightly longer than the third joint, straight, tapering proximad in the 

 proximal half, distal half subequal in width, rather narrow; fifth 

 joint slightly longer than the fourth joint, faintly enlarging distad. 

 Pronotum transverse, in general form strongly rounded transversely: 

 cephalic margin of dorsum faintly arcuate produced mesad; caudal 

 margin arcuate laterad, shallowly and broadly arcuato-emarginate 

 mesad; all margins more or less distinctly cingulate: transverse sulci 

 two in number, the cephalic one placed close to the cephalic margin, 

 being intermarginal and deeply impressed on the lateral lobes, the 

 caudal one placed a short distance cephalad of the caudal margin, 

 on the dorsal surface being broadly obtuse-angulate in form, on the 

 lateral lobes carried regularly and straight ventro-cephalad, joining 

 the cephalic transverse sulcus; intervening area, area of humeral 

 shoulders and caudal section of lateral lobes moderately bullate; a 

 medio-longitudinal impressed area is indicated on the middle of the 

 dorsum: lateral lobes of the pronotum subrectangulate in general 

 form, cephalic margin of the lobes straight dorsad, curving through 

 the rounded ventro-cephalic angle into the weakly oblique cephalic 

 two-thirds of the ventral margin, this rounding into the reversed 

 oblique, short caudal third of the same margin, ventro-caudal angle 

 obtuse, caudal margin straight, no humeral sinus present. Tegmina 

 distad becoming coriaceous and pilose, about one and two-thirds times 

 as long as the body, broad, the greatest width at distal fourth and con- 



