PROCEEDINGS OF THE XATIOyAL MVSEVil. 



caudal margin narrowly confluent with the inner branch. The space 

 inclosed by the fork of this stripe, at its cephahc end, is ghstening, 

 mirror-hke; beliind this oval, ghstening spot, a small cloud of chest- 

 nut-brown; a row of long hairs extencUng along the lateral branch and 

 its fork, these hairs dark basally, paler brown at their tips; scutum 

 dull blackish-gray; from both forks of the lateral pragscutal stripes 

 extends backward a narrow, velvety-black stripe, wliich meet in a 

 triangle at the outer margin of the sclerite. Caudo-Iateral margin of 

 the sclerite produced mto a blunt protuberance ; scutellum and j)ost- 

 notum light graj^ brown on the lateral margin above the base of the 

 halteres. Pleurse dull bluish-gray with indistinct black marks on 

 some of the epipleural and sternal sclerites. Halteres light yellowish- 

 bro\vn, knob brown. Fore legs, coxas yellow witli a shght gray 

 bloom on its external face; trochanter yellow; femur narrow ut the 

 base, soon thickened, clavate, its distal half •with, long outspread 

 hairs; basal half of the femur pale whitish-yellow with Ught yellow 

 hairs; a post-median brown rmg with black hairs; a broail, bright 

 yellow, sub-apical ring, and an apical ring with black hairs; tibia 

 about uniform in diameter throughout its length, densely clothed 

 with long prominent hairs, a broad basal rmg dark bI■o^v]^ with black 

 hairs; a narrower, white, sub-basal ring with wiiite hair.s; a very 

 broad, browTi, median portion with black hairs; a broad white sub- 

 apical ring with white hairs; a narrow apical ring with black hairs; 

 tarsi with prominent hairs, first segment brown with brown hairs 

 except at the tip, which is white with white hairs; segments two and 

 most of thi-ee, wiiitc with white hairs; tip of three, and four and five, 

 brown. Lower aspect of extreme tip of segment one, and extreme 

 base of segment two, jet black, denticulate. Middle legs similar to 

 fore, but post-median brown band on femur smaller and yellow sub- 

 apical ring broader. Hind legs similar to fore, but the hairs even 

 more conspicuous and show}-; claws long, extended, smooth, or with 

 mere indentations on the inner margui. 



Wings: hyaline with bro^vn veins; pale browTi markings on the 

 wing as follows : a large blotch at the origm of Rs, continuing across 

 cell 11; a large row of markings at the tip of 11, and along the cord; 

 along the second deflection of M3 and cross-vein m; at tip of Rj, apex 

 of the wing, and a faint mark extending from the tip of second anal 

 across cells second A and Cu. Venation (see fig. 42) : Sc verj'- long 

 as in the genus; Sc, separated from R, at the tip by a space equal 

 to tlie' cross-vein r-m. Rs strongly arcuated at its origin, almost 

 parallel with R„ in a direct hnc with R,; R, leaves Rj shortlj- after 

 the fork of Rs and is very strongly curved toward eosta at its lip; 

 R<+5 strongly arcuated on its deflection; basal deflection of M,+j about 

 four times as long as the basal deflection of M3; Mj-f-Cu, longer than 

 the basal deflection of Cu,; Cuj equal to the basal deflection of Cu,. 



