322 Tll'ULTD^E. 



consisting; of a large, square, black, slightly curved, dorsal 

 plate, with bright yello^^" hair on the posterior margin, except 

 just in the very centre ; the outer side of the large basal joint of 

 the claspers has almost the appearance of a side-plate ; the second 

 joint is a hook-like pointed reddish yellow piece, slightly curved ;, 

 a pair of broad, thin, pale yellow processes issuing apparently from 

 the lower part of the genital chamber, curving upwards side by 

 side, closing up (so to speak) the geuital chamber. Inside, below 

 them, a narrow penis is observable ; a ventral plate is present. 

 Leqs brownish yello^^', coxse slightly dusted with grey, femora and 

 tibias each\\ith a narrow black apical ring, tarsi blackish towards the 

 tip. Wings pale grey, with nearly clear streaks and spots, placed 

 as follows : — one, of irregular width, from the 5th longitudinal 

 vein to the hind border of the wing, ending just behind the tip 

 of the 7th vein ; one across the middle of the 2nd basal and the 

 anal cells, zigzag in nature : a narrow clear streak, here and there 

 less distinct, around the inner margin of the distal half of the 2nd 

 basal cell ; over the base of the discal and 4th posterior cells ; 

 beyond the stigma and, to a less degree, more or less distinctly 

 before it ; in the tips of the submarginal and 1st posterior cells 

 (less distinctly), and a distinct semicircular spot on the wing- 

 margin in the 2nd, 3rd, 4th, and 5th posterior cells; and finally 

 two on the margin of the axillary cell. A little blackish suffusion 

 over the base of the 2nd longitudinal vein ; another forming the 

 ill-defined stigma ; another over the basal veins of the discal cell 

 and the posterior cross-vein and about the middle of the anal cell. 

 Halteres yellow, clubs blackish, tips yellowish. 

 Length 16 millim. 



Described from two perfect males from Badrinath, 10,200 ft., 

 Garhwal district, 27. v. 10 (Imms). 

 Tijpe in the Indian Museum. 



A very distinct species, though closely allied to those of the 

 T. himalayensis group, being nearest to T. tessellatipennis ; yet 

 when a couple of specimens of each are placed side by side, their 

 specific distinctness is obvious at a glance. Still it is difficult to 

 define the differences exactly, beyond noting that in T. tesscUati- 

 pennis the \a iiigs have a very distinct yelloiu appearance whilst 

 in T. griseipennis they are as distinctly ^jrtZt' grey, especially if 

 viewed upon a dark background. The same applies to the colour 

 of the thorax, which is yellowish in the former, grey in the latter 

 species. Another difference, of perhaps less A^alue, is that the two 

 clear streaks in the middle of the wing extend forward in T. tes- 

 sellatipennis up to the 1st longitudinal -vein, but in the present 

 species the first streak only extends forward to the 5th longi- 

 tudinal vein, and the 2nd streak as far forward as the 4th vein. 

 That they are quite distinct is certain. 



