828 PROCEEDINGS OF THE ACADEMY OF [Nov., 



arched and bearing a narrow longitudinal median carina extending 

 down to the base of the fastigium; fastigium compressed, depressed 

 with the outline arcuate, constricted proximad, bearing a very shallow 

 longitudinal median sulcus, and carrying the paired ocelli on its lateral 

 faces; facial fastigium touching the fastigium of the vertex; eyes 

 reniform in basal outline, the greatest diameter dorso- ventral and nearly 

 twice the greatest width, quite prominent when viewed from the dor- 

 sum; mouth-parts produced ventrad, in depth equal to the remainder 

 of the head, maxillar palpi with the distal joint elongate, slender, with 

 the apex slightly expanded into a crudely trumpet-shaped structure, 

 penultimate joint strongly compressed; antennae apparently exceeding 

 the tips of the tegmina when in perfect condition, insertion of the 

 antennae broad and occupying all the section between the facial fasti- 

 gium and the eyes. Pronotum faintly saddle-shaped, dorsum arched 

 except for a semicircular caudal section which is deplanate; cephalic 

 margin sinuato-truncate, caudal margin gently arcuate, lateral angles 

 obsolete cephalad, distinct, but not sharp, caudad, and diverted ventro- 

 cephalic on the lobes caudad of the last transverse sulcus; distinct 

 transverse sulci two in number, the cephalic situated immediately 

 caudad of the cephalic margin, and the caudal situated in its usual place 

 laterad, but on the dorsum extending caudad and crudely following the 

 outline of the caudal margin; lateral lobes longer than deep, the ventral 

 margin evenly arcuate, cephalic margin very slightly arcuate with the 

 ventro-cephalic angle obtuse, caudal margin arcuato-emarginate, the 

 ventro-caudal angle subrectanguiate, surface depressed along the line 

 of the sulci and on the ventro-caudal section, the deflected angle being 

 roundly arched. Prosternum unarmed; mesosternum with a pair of 

 erect blunt spines; metasternum with a pair of broad flat trigonal 

 diverging spines. Tegmina long, nearly reaching to the tips of the 

 caudal femora, greatest width contained about three times in the length 

 (apexes damaged); costal margin arcuate proximad; mediastine vein 

 straight, humeral vein with three rami, discoidal with two rami, 

 median with two, the dorsal of which again divides, ulnar vein undivided. 

 Wings equal to the tegmina in length. Ovipositor slightly longer 

 than the pronotum, regularly arched and falciform, apex acute, mar- 

 gins unarmed; subgenital plate produced mesad into an elongate 

 sagittate process with needle-like apex, and a deep median sulcus 

 through the greater part of its length. Cephalic femora equal to the 

 head and pronotum in length, ventro-cephalic margin with three small 

 spines, ventro-caudal margin unarmed; cephalic tibiae about equal to 

 the femora in length, armed with long slender spines, four apical, one 



