108 Orthorrhapha brachycera. 



the third joint elongated conical. Thorax more or less densely covered 

 with golden and silvery, scaly hairs; moreover it is clothed with erect, 

 black or brownish hairs; at the front end the hairs are reddish yellow 

 and form a dense fringe; along the lateral margin there are reddish 

 hairs, and on the postalar callus white hairs; the notopleural and 

 postalar bristles are yellow or whitish. The pleura have long, yellow 

 hairs, there is a tuft of snow-white hairs in front of the wing-root 

 below; the metapleura have a vertical tuft of hairs which are white 

 above, yellow below. Scutellum with the ground colour red, black at 

 the base, covered with silvery, scaly hairs, at the base in the middle 

 a spot of black scales ; the marginal bristles yellowish red. The ground 

 colour of abdomen black, at the sides of the second and third seg- 

 ments a red spot; it is covered with black, scaly hairs, at the front 

 margin of the second and at the hind margin of the fourth, fifth and 

 sixth segments there are yellow or golden, scaly hairs, and also other- 

 wise on the second and third segments there are some yellow hairs, 

 especially in the middle; on the third and fourth segments there are 

 white, transverse bands which are narrowed or interrupted in the 

 middle, the posterior band most broadly interrupted; the sixth seg- 

 ment has a spot of white hairs in the middle, and the seventh has 

 long, white hairs at the hind margin ; besides, abdomen is clothed with 

 erect, black hairs which form a fringe at the lateral margin, at the 

 sides of the first segment there are white hairs, and likewise at the 

 sides of the fourth segment; the hairs towards the apex of abdomen 

 are somewhat strong and bristly. Venter black with the hind margins 

 of the segments more or less broadly reddish ; it is clothed with long, 

 pale yellowish, towards the end more or less black, hairs, and with 

 depressed hairs of the same colour or more yellow, on the sides of 

 the third and fourth segments the hairs are whitish or white. Legs 

 with the femora blackish at the basal part, the apical part and the 

 tibiæ yellowish brown or brown, the tarsi black or brownish; the 

 hairs and bristles black, the covering of scaly hairs yellow or golden; 

 the front tibiæ smooth. Wings with the basal part brown, the boun- 

 dary line stretching from the apex of the mediastinal vein in a sinuous 

 course backwards about to the alula, leaving the apical part and the 

 whole hind margin hyaline; there are three transverse, hyaline spots 

 in the brown part, going out from the subcostal vein, one down over 

 the medial cross-vein, the second over and inwards to the basal corner 

 of the discai cell, and the third from the basal cross-vein to the alula; 

 also round the base of the postical fork there is a clearer spot, 

 Costa is black haired at the base on the margin and has black and 



