1921] NATURAL SCIENCES OF PHILADELPHIA. 199 



claws and arolia, Leuropeltis differs very strikingly from the Nycti- 

 borine genus Pseudischnopter-a in the even more decidedly flattened 

 and shorter head, eyes which are more decidedly developed laterad 

 and extend ventrad well beyond the antennal sockets, more trans- 

 verse, oval pronotum with greatest width mesad and lateral portions 

 not at all deflexed, broader tegmina with longer anal field, spurious 

 veins absent and discoidal sectors decidedly oblique, broader wings 

 with area of costal veins much wider and ulnar vein with all branches 

 complete, unspecialized median segment but specialized sixth 

 abdominal tergite of male, very distinctive genitalic development 

 in this sex, ventro-cephalic margin of cephalic femora with two 

 heavier terminal spines and both cephalic and caudal ventral mar- 

 gins of other limbs armed, the caudal margins less heavily than in 

 Pseudischnoptera . 



In linear arrangement, the genus can not be satisfactorily assigned, 

 due to the fact that many aberrant genera of the Group Blattellae 

 exist, radiating away from the normal toward other totally different 

 types. We place Leuropeltis after Liosilpha Stal, from which genus, 

 however, it is very widely separated. 



Genotype. — Leuropeltis atopa new species. 



Generic Description. Genus known only from the male sex. 

 Head flattened, eyes large, widely sepai-ated and prominent, 

 antennae coarse and well supplied with short hairs. Pronotum 

 rectangularly oval, moderately transverse, greatest width mesad, 

 surface flat, the disk showing two pairs of oblique impressions. Teg- 

 mina long and broad, anal field elongate, discoidal sections strongly 

 oblique. Wings fully developed, marginal field extending over half 

 distance to apex, scapular field very broad in distal half, costal 

 veins thickening but not clubbed distad, ulnar vein with branches 

 complete, intercalated triangle subobsolete. Abdomen with latero- 

 caudal angles of five proximal tergites sharp, rectangulate, weakly 

 produced, tergites decidedly narrower after sixth, sixth tergite 

 specialized mesad. Cephalic femora with ventro-cephalic margin 

 unarmed except in distal third, where it is supplied with short, stout 

 spines, terminating in two heavier elongate distal spines, of which 

 the more distal is slightly the more elongate ; ventro-caudal margin 

 unarmed except in distal third, where it is supplied with a few mod- 

 erately large, elongate spines. Other ventral femoral margins 

 moderately supplied with similar spines, which, particularly on the 

 cephalic margins, are not as heavy or as large as those often 

 developed in the Pseudomopinae. Caudal metatarsus armed 

 ventrad with two rows of minute spinulae and supplied distad with 

 a moderately large pul villus, three succeeding tarsal joints supplied 

 with similar pulvilli, occupying their entire ventral surfaces. Large 



