l6o ENTOMOLOGICAL NEWS. [April, 'l6 



Pronotum with disk very weakly raised, the whole surface in nearly 

 the same plane; cephalic margin moderately truncate, weakly convex; 

 angles broadly rounded, the cephalic more so than the caudal; caudal 

 margin truncate, very weakly convex. 



Tegmina very delicate; with seven longitudinal discoidal sectors (this 

 including the median vein, all its branches and the production of the 

 ulnar vein); cross veinlets very weak; wings very delicate; six of the 

 costal veins rather heavily clubbed distad, ulnar vein with four 

 branches, intercalated triangle small, axillary vein with three branches 

 which are directed away from the costal margin. 



Abdomen with dorsal surface little modified ; sixth segment more pro- 

 duced than the others, with distal margin broadly and weakly convex 

 lateral and broadly and more decidedly concave mesad; seventh segment 

 somewhat narrower, with distal margin sinuous; eighth segment still 



Fig. i. Lateral outline of subgenital plate of Fig 2. Ventral outline of subgenital 



type. <f. (Greatly enlarged). plate of type. <f. (Greatly enlarged). 



narrower and normally almost completely concealed, broadly cleft 

 mesad; ninth segment very much narrower, very little produced; 

 tenth segment (supra-anal plate) distinctly transverse, triangularly 

 weakly produced with blunt apex. Subgenital plate with lateral mar- 

 gins weakly elevated and declivent distad forming small and narrow 

 emarginations at their juncture with the mesal portion, within which 

 emarginations are situated the styles which are minute almost micro- 

 scopic pegs with apices acute; the remaining mesal portion of the plate 

 is produced latero-distad in acute-angulate weakly divergent thin 

 plates, the remaining very brief mesal portion of the margin between 

 these transverse. 



Limbs very delicate with delicate spines; ventro-cephalic margin of 

 cephalic femora with long, slender, widely spaced spines in a little more 

 than proximal half, which slightly decrease in size distad, remaining 

 distal portion with very much smaller and more closely set spines. 



Allotype: Same data as type. [Acad. Nat. Sci. Phila.] 



Agrees with male except in following features. Dorsal abdominal 

 segments not differing greatly in outline, supra-anal plate very small, 

 strongly transverse, weakly triangularly produced, with lateral margins 

 weakly convex and apex briefly and very shallowly notched. Subgeni- 



