1918.] NATURAL SCIENCES OF PHILADELPHIA. 203 



cephalic angle into the oblique, but more nearly horizontal, weakly 

 sinuate ventral margin, ventro-caudal angle roundly obtuse, caudal 

 margin oblique, in general straight, with a broad though shallow 

 humeral sinus; surface of lateral lobes moderately undulate, having 

 one center of elevation or "boss" on the prozona, the other in the 

 position of similar structures in the Conocephalinffi. Tegmina 

 slightly surpassing the apices of the caudal femora, subequal in mdth, 

 the greatest width contained nearly six times in the length: costal 

 margin straight except for short arcuations proximad and distad, 

 sutural margin straight, apex rounded: principal venation simple; 

 mecUan vein diverging distad of the middle of the cliscoidal vein; 

 reticulations in general irregular, the transverse nervures clearly 

 defined only in the proximal portions of the marginal and discoidal 

 fields. Wings reaching to the apices of the tegmina. Prosternal 

 spines elongate, aciculate, Aveakly recurved, parallel: mesosternal 

 lobes narrow, very acute, the apices weakly spiniform: metasternal 

 lobes weakly obtuse-angulate, the angle briefly spiniform. Disto- 

 dorsal abdominal segment with an impressed, medio-longitudinal 

 crease, the free margin being produced each side of this into subspini- 

 form projections, supra-coxal sections of the margin broadly and 

 shallowly arcuato-emarginate: cerdi tapering, with the apices rather 

 sharply aciculate, gently arcuate when seen from the side: ovipositor 

 moderately falcate, in length almost equal to twice the length of the 

 pronotal disk, greatest depth of the ovipositor inesad ; dorsal margin 

 of ovipositor very faintly curved in distal two-thirds, ventral margin of 

 same regularly arcuate, apex acute: subgenital plate in general tri- 

 gonal, the margin having a distinct angulate sinuation each side of 

 the median V-emargination. Cephalic femora subequal to the pro- 

 notum in length, the ventro-cephalic margin with two spines distad: 

 median femora with three to four spines in the same position on the 

 same margin; all genicular lobes spined excepting the caudal ones of 

 the cephalic femora. Caudal femora about three-fourths as long as 

 the tegmina, robust proximad, narrowed distad, ventro-external 

 margin with eight spines. 



General coloration clay color to ochraceous-buff, the abdomen 

 approaching buckthorn brown, the dorsal aspect of the head and 

 pronotum tinted with the same. Head with a large, solid facial area 

 of moderately shining black, which dorsad involves all of the fastigium 

 excepting its dorsal surface, the proximal antennal joint and the entire 

 face, the black area expanding ventrad from as wide as the space 

 between the ventro-cephalic section of the eyes to wider than that 

 15 



