1920.] NATURAL SCIENCES OF PHILADELPHIA. 22T 



greatest width, dorsal mai-gin of shield in general obtuse-angulate, 

 slightly emarginate ventrad of the antennae; lateral margins slightly 

 diverging dorsad; ventral margin faintly emarginate: eyes moderately 

 prominent, not extending caudad of the general line of the head, in 

 basal outline broad ovoid: antennae elongate, joint moniliform. 



Pronotum moderately elongate, the greatest width across the ex- 

 pansion contained nearly four times in the length of the same: collar 

 occupying about two-fifths of the pronotal length, the collar margins 

 regularly diverging caudad to the moderately indicated expansion, 

 the cephalic extremity of the pronotum regularly, but relatively 

 narrowly, rounded ; shaft of the pronotum ajDpreciably broader than 

 the collar, the margins almost subparallel, faintly diverging caudad, 

 caudal margin subtruncate, all lateral margins sparsely but dis- 

 tinctly denticulate, expansion rounded; median carina distinct^ 

 weak cephalad on the collar; transverse sulcus well indicated: collar 

 with lateral impressed areas throwing an elongate-elliptical dorsal 

 medio-longitudinal area into relief. 



Tegmina in length equal to about three times that of the pro- 

 notum: costal margin distinctly and regularly fringed with rela- 

 tively short hairs, strongly rounding to the narrowly rounded but 

 acute-angulate apex: marginal field narrow, proximal section weakly 

 expanded, the field having in the broader proximal section a false 

 longitudinal vein which forms a biseriate row of areolets: discoidal 

 vein bifurcate at distal third, median vein biramose, ulnar vein 

 biramose proximad; stigma nearly longitudinal, involving both distal 

 rami of the ulnar vein and the proximal ramus of the median vein; 

 axillary veins two in number, the distal one strongly sigmoid ; inter- 

 spaces between the veins of the discoidal field with false longitudinal 

 veins, which make a biseriate disposition of the subrectangulate 

 areolets. Wings surpassing the closed tegmina by about the length 

 of the shaft of the pronotum, the apex slightly acute. Surface of 

 the tegmina and of the exposed portion of the wings covei-ed with 

 short, plush-like, microscopic pile. Abdomen with the distal por- 

 tion missing. 



Cephalic coxae subequal to the pronotum in length, slender^ 

 strongly carinate, the margins unspined: cephalic femora equal 

 to one and one-fourth the length of the coxae, slender, the depth 

 hardly more than one-sixth of the length; ventro-external mar- 

 gin with five spines, one of which is genicular in position; ventro- 

 internal margin with thirteen spines, which are arranged in the 

 following formula (reading from the distal extremity) ilililililili, 



