Z PEOCEEDINGS OF THE NATIONAL MUSEUM tod. 72 



Pronotum dark clove brown, the lateral margins paler, the scutel- 

 lum brighter, narrowly margined anteriorly with black. Mesonotal 

 praescutum brown with four barely evident brighter brown stripes, 

 the posterior sclerites of the mesonotum generally of this same bright 

 brown. Pleura brown, the dorso-pleural region extensively and con- 

 spicuously pale ochreous; ventral sclerite of the pleurotergite pro- 

 duced laterad into a conspicuous triangular flattened lobe, the cephalic 

 face of which is densely covered with a cream-colored velvety pile. 

 Halteres brownish yellow, the knobs dark brown. Legs with the 

 coxae and trochanters dark cinnamon brown ; femora yellow, the tips 

 rather broadly (2 mm.) and conspicuously blackened; tibiae brown- 

 ish yellow, the tips narrowly inf uscated ; tarsi light brown, the outer 

 segments darker. Wings of the usual Brithura type, the membrane 

 yellowish, extensively variegated with darker, or brown, sparsely 

 variegated with yellow; prearcular region largely pale; cell O 

 darker brown, So more yellowish; stigma relatively pale, with 

 brighter yellow markings before and beyond it ; a small darker brown 

 spot at origin of i?s, preceded and followed by the yellow markings 

 described; anterior cord a little seamed with darker; a small yellow 

 area near outer end of cell R^ ; similar yellow marginal areas in cells 

 i?g to 1^4, inclusive, with two similar markings in the first anal and 

 another in the second anal cells, these latter areas lying not far from 

 the veins ; a small brown cloud in cell Gu not far from midlength ; a 

 pale yelloAV, gently arcuated transverse area across the outer end of 

 cell M ; vein Gu^ beyond this mark, as well as mfh-cu conspicuously 

 seamed with dusky ; outer end of cell -fiTst M^^ fork of M and marginal 

 spots at the ends of the veins, as well as the wing apex in the radial 

 field, and the posterior margin of the wing in the anal cells, more 

 dusky. Venation (fig. 1) : So-^ lacking; Sg^ ending just before r, the 

 latter close to the fork of ^2+3 5 ^'-'^ reduced ; cell first M^ pentagonal ; 

 petiole of cell M-^ a little longer than Ttv; mr-cu strongly arcuated, 

 longer than the distal section of Gu-^ inserted on M^^ shortly beyond its 

 origin; Gu^ attaining the margin at the end of '6'^«l; cell second A 

 wide. 



Abdomen rich cinnamon brown, the lateral region of the tergites 

 broadly darker brown; caudal margins of the segments narrowly 

 and obscurely, the extreme caudo-lateral angles more brightly yel- 

 lowish, most conspicuous on segments two and three; sternites 

 somewhat darker brown, the caudal margins more sooty brown, the 

 extreme lateral angles of the segments again with yellow triangles. 

 Dorsal shield of ovipositor obscure yellow, the conspicuous tergal 

 valves dark chestnut horn color. 



Habitat. — China (Szechuen). Eolotype, female, Shin Kai Si, 

 Mount Omei, altitude 4,400 feet, September 10, 1922 (D. C. Graham). 



ry^e.— Female, Cat. No. 40317, U.S.N.M. 



