Doros. 361 



brown. Thorax black or brownish black, shining, punctate and clothed 

 with short, decumbent, brownish yellow hairs; on the postalar calli 

 longer, pale hairs; there is a yellow line along the side margin, nar- 

 rowed behind, and sometimes indistinct behind the transverse furrow. 

 Scutellum brownish or yellowish brown, with somewhat long, pale 

 hairs. Pleura black, shining, with a more or less distinct, yellow spot 

 above the front coxæ and at the upper margin of the sternopleura ; 

 the hairs are longish, whitish, only present on meso- and on the 

 anterior part of pteropleura. Abdomen narrow, constricted on the 

 basal part; it is black, a little shining, with a pair of basal spots and 

 three narrow, yellow bands; the basal spots are linear, beginning at 

 the basal corners and stretching obliquely backwards and inwards 

 about to the middle, but broadly separated; the bands lie close to 

 the front margins of the segments, the middle band is the narrowest ; 

 the last is somewhat curved, and it is partly formed of the yellow 

 hind margin of the fourth segment and this margin is a little triangularly 

 produced in the middle; the basal band of fifth segment may be quite 

 hidden mider the yellow hind margin of the fourth, so that the third 

 band is formed only of this margin ; the hind margin of the fifth seg- 

 ment is narrowly yellow. All the bands go over the side margin. 

 The hairs on abdomen are short and mainly foUowing the ground 

 colour, but partly brown on the black parts and mainly black at the 

 yellow hind margin of fourth segment; at the base and basal corners 

 they are longer and pale, and likewise along the sides of second seg- 

 ment. Venter mainly coloured as dorsum, but with four bands as 

 the hind margin of the first segment is yellow but second segment 

 without spots; it is clothed with short hairs, pale on the basal half, 

 dark towards apex; just at the base they are long. Legs reddish yel- 

 low, femora black at the base, on the posterior side the black colour 

 often stretching towards the apex, hind femora a little pale at the 

 base; tibiæ with more or less complete. blackish rings below the 

 middle, most distinct on hind tibiæ: tarsi with the last two or three 

 joints brownish or blackish. The legs are short-haired, only behind 

 the anterior femora the hairs are a little longer; they are all pale. 

 Wings relatively long, somewhat brownish tinged, the whole anterior 

 margin strongly brown, the brown space bounded behind from the 

 base to the medlal cross-vein by the discai vein, and outwards by the 

 cubital vein. Squamulæ greyish or blackish yellow with a brown 

 fringe. Halteres orange with a darker peduncle. 



Female. Vertex narrow, black; frons rapidly widening to the 

 antennæ, yellow with a black middle stripe from vertex to antennæ, 

 widening evenly downwards so that only the side margins of the 



