64 Orthorrhapha brachycera. 



and hypopleura are very strong, black, sometimes a few yellow. 

 Abdomen with the three first segments black, the rest bright yellow 

 on account of a dense pruinosity; at the lateral hind margm of the 

 second segment a grey pruinose spot and on the third a similar, but 

 yellow spot ; on the side margins of the yellow segments longitudinal, 

 brown spots. The first three segments are clothed with black hairs 

 which are short on the dorsum, longer at the side margins and here 

 whitish at the hind corners; the yellow segments are clothed with 

 short, yellow hairs, at the lateral hind corners of the first of them 

 there are black hairs; the hairs are slightly longer at the hind margins, 

 but there are no bristles. On the venter the first four segments are 

 brown, the rest brownish yellow, the first segments clothed with 

 long, yellowish hairs, on the other segments the hairs are short and 

 there are short, black hairs along the middle of the venter. The 

 genitalia small, ferrugineous, with yellow hairs ; the base of the lower 

 forceps bears bristles ; the arms of the upper forceps are curved slightly 

 downwards, rounded at the end ; the ventral lamella brownish yellow, 

 not shining. Legs ferrugineous, the tibiæ a llttle lighter and the tarsi 

 reddish yellow; coxæ brownish pruinose, the anterior with long, yel- 

 lowish hairs on the front side, the posterior with black and yellow 

 spine-like bristles on the outer side and towards the apex; the legs 

 clothed with somewhat longish, depressed hairs which are chiefly 

 yellowish on the dorsal side of the femora, black on the ventral side 

 and on the anterior side of the front femora; they are yellowish on 

 the tibiæ, only black on the ventral side of the hind tibiæ and to a 

 less degree on the ventral side of the middle tibiæ; long and thin 

 hairs are found on the ventral side of the front femora and tibiæ, 

 they are chiefly black on the femora, yellow on the tibiæ; spine-like 

 bsistles are present on the ventral and on the postero-dorsal sides of 

 the front femora, on the ventral and anterior sides of the posterior 

 femora and a few dorsally at the apex of the posterior femora; on 

 the front tibiæ they are found on the dorsal and posterior sides, on 

 the posterior tibiæ on various sides; they are generally black on the 

 ventral side of the posterior femora; the rest including all on the 

 tibiæ yellow. The spine-like bristles on the tarsi are yellow, the 

 shorter ones on the lower surface black. Wings brownish yellow, the 

 axillary and all posterior cells have the centre darkened, the discai 

 and the apices of the cubital cells are like-wise darkened but to a 

 slighter degree; veins yellowish brown. Halteres yellowish with a 

 d arker knob. 



Female. Quite agreeing with the male, the ovipositor brownish, 

 black at the apex. 



