120 Orthorrhapha brachycera. 



propleura with fine, pale hairs and a black prothoracic bristle. Ab- 

 domen green with golden or coppery reflexes, sometimes almost quite 

 coppery, with very narrow or almost wanting dark liind margins to 

 tlie segments; it is distinctly whitish pruinose, most down the sides; 

 it is clothed with short, black hairs and has hindmarginal bristles, a 

 little longer on the first segment. Venter greyish, pale-haired. Hypo- 

 pygium somewhat large, black or æneous black, greyish pruinose; 

 eighth segment with black hairs; there are broad, rounded posterior 

 ventral lobes with a little upwards turned point, and a long hair on 

 the outer side near the base; they project only slightly beyond the 

 end of the hypopygium; there are also a little projecting middle lobes; 

 the inner lamellæ are somewhat short, the median thin, angularly 

 bent and pointed, the lateral dilated, with a dilatation at the apex, 

 and a spine at the upper margin near the base; the outer lamellæ 

 are nearly ovate, whitish with a narrow, blackish margin; at the end 

 there are a number of teeth with black, curved hairs; the most 

 dorsally placed tooth is somewhat long, and dorsally to it is a small 

 tooth with two strong hairs; the teeth decrease evenly into the serra- 

 tion of the ventral margin, with its shorter hairs, and on the inner 

 side are inwards curved, pale hairs. Legs yellow, front coxæ grey at 

 the base, whitish pruinose anteriorly; posterior coxæ grey, yellow 

 just at the apex; anterior tarsi with the apex of metatarsus and the 

 four folio wing joints blackish; hind tibiæ blackish or brownish at the 

 apex, sometimes slightly or almost not, hind tarsi blackish. The legs 

 have short, black hairs; the anterior coxæ are white-haired except 

 for the black bristles; the hind femora have longer hairs above to- 

 wards the base, they are slightly pale-haired below and have here a 



Fig. 34. Wing of D. griseipennis d". 



fringe of long black cilia in about the apical half; the posterior femora 

 have one preapical bristle; front tibiæ with bristles above and one or 

 two postero-ventral bristles; there is a long, thin hair at the tip on 

 the ventral side; middle tibiæ with three to four antero-dorsal, one 



