1905.] NATURAL SCIENCES OF PHILADELPHIA. 815 



of spines on the median femora and the larger size, and from hrevistylus 

 in the form of the lateral lobes of the pronotmn, the number of femoral 

 spines and the curved ovipositor. 



Size medium; form robust. Head with the occiput arched; fasti- 

 gium declivent, slightly produced, acuminate, the margins elevated 

 and the apex an acute horizontally directed process; facial fastigium 

 touching the fastigium of the vertex; eyes subovate, the greatest 

 length dorso- ventral, very prominent when viewed from the dorsum; 

 antennae with the proximal joint large, cylindrical, margins of the 

 insertion of the antennae placed close together, the facial fastigium 

 being narrow, joints of the antennae slightly nodose distad. Pronotum 

 saddle-shaped, depressed mesad, elevated cephalad and caudad; ce- 

 phalic margin arcuato-truncate, elevated mesad at an angle of about 

 45°; caudal section slightly elevated into a rather flattened transverse 

 structure with the surface lineato-rugose and the outline strongly 

 constricted cephalad with the cephalic angles rounded, caudal margin 

 subtruncate; dorsal section between the first and second transverse 

 sulci with a pair of erect rather blunt diverging processes w^hich 

 form part of the rather broken lateral margins of the dorsal surface; 

 lateral lobes nearly quadrate, the margins nearly straight, transverse 

 sulci distinct and carried well down on the lobes. ]\Iesosternal lobes 

 with a pair of lateral erect trigonal processes. Tegmina about two and 

 a half times the length of the head and pronotum, lanceolate, the 

 greatest width contained four times in the length; costal margin 

 straight except for a strong proximal arcuation, sutural margin evenly 

 arcuate, apex rather blunt, rounded; costal field with the mediastine 

 vein short and soon lost in the general caudo-ventral trend of the veins, 

 median vein issuing slightly distad of the middle of the tegmen, l^ifur- 

 cate, the principal branch reaching the sutural margin near the apex, 

 ulnar vein with one ramus, anal vein with a ramus on the dorsal field. 

 Ovipositor equal to the length of the pronotum and twice the length 

 of the head, acuminate, the proximal half straight and subequal, the 

 distal pronotum moderately bent arcuate and tapering, with the dorsal 

 margin nearly straight distad of the curve, apex acute, ventral margin 

 of the apex serrulate; subgenital plate transverse, the margin with a 

 deep brace-shaped emargination, the lateral processes acute. Cephalic 

 femora slightly more than twice the length of the head, the distal portion 

 with a very slight curve, genicular lobes acute, dorsal margins unarmed, 

 cephalo- ventral margin with four dentate lobes ; cephalic tibiae slightly 

 shorter than the femora, dorsal margins each with three trigonal lobes, 

 ventral margins with five to six spines; terminal joint of the cephalic 



