286 PROCEEDINGS OF THE ACADEMY OF [May, 



about twice the length of the body, the third joint slightly longer than 

 the proximal and second joint together. ]\Iandibles, clypeus and lab- 

 rum large and produced as is usual in the genus ; palpi large, with the 

 first and second joints subequal, the third slightly longer than the others 

 and distinctly longer than the labrum. Pronotum hardly arched 

 longitudinally, distinctly arched transversely ; cephalic margin truncate, 

 caudal margin arcuato-truncate ; lateral lobes very greatly longer than 

 deep, the greatest depth in the cephalic section ; no median carina pre- 

 sent, but an extremely fine median sulcus extends the whole length of 

 the pronotum; distinct transverse sulci two in number, one near the 

 cephalic margin, the other slightly caudad of the middle and extend- 

 ing cephalo-laterad of the axis of the pronotum and forming oblique 

 broad depressed areas on the lateral lobes. Tegmina very minute, 

 not half as long as the exposed lateral portion of mesonotum, pad-like. 

 Mesonotum, metanotum and abdominal segments provided dorsad 

 with a slight but distinct median carina, laterad the distal section of 

 each segment is provided with a number of short welt-like ridges. 

 Supra-anal plate small, trigonal, depressed with the margins elevated ; 

 ovipositor rather short and weak, slightly arcuate, tapering, apex 

 moderately acute, margins unarmed. Prosternum with a pair of very 

 long spines, nearly erect, the tips needle-like; mesosternum with a 

 pair of similar spines, which, however, are shorter and broader than 

 those on the prosternum ; metasternum with a pair of blunt triangular 

 lobes. Cephalic femora moderately compressed, slightly longer than 

 the pronotum, margins and genicular lobes unarmed; cephalic tibiae 

 slightly longer than the femora, dorsal margins each with a distal^ spine 

 and the cephalic with one median one, ventral margins each with five 

 spines, the proximo-caudal small, as is also the proximo-dorsal; 

 cephalic tarsi very slightly more than half the length of the tibiae, 

 arolia absent. Median femora equal to the cephalic in length and 

 unarmed ; median tibiae very slightly longer than the femora, armed on 

 the dorso-cephalic margin with three spines and on the dorso-caudal 

 with four spines, the ventral margins each armed with five spines. 

 Caudal femora slightly shorter than the length of the body, strongly 

 inflated in the proximal two-thirds, the distal third subequal, pagina 

 sculptured with a regular series of clear-cut oblique lines, caudo- 

 ventral margin with five to seven short spines on the distal section; 

 caudal tibiae about as long as the femora, dorsal margins each armed 

 with^ten fixed spines, ventral margins armed wdth three short mobile 

 spines on the cephalic margin and one on the caudal margin, while 

 three pairs of distal spurs are present, the proximal being very large 



