Chilosia. 141 



is very slightly or not descending, it is grey pruinose below the antennæ, 

 especially on a triangular spot at each side, for the rest it is slightly 

 pruinose, the central knob shining, especially above. Eye-margins very 

 narrow, grey pruinose, with short, whitish hairs. Occiput greyish 

 pruinose, with longish, white hairs below beconiing shorter to quite 

 short above and here yellovv ; besides some long, black hairs above. 

 Antennæ not large, third joint longer than broad; the basal joints 



Fig. 64. Antenna of C. scutellata c?, from the inside. X 75. 



blackish, the third paler or darker brownish ; arista distinctly pubescent, 

 longest above. Thorax æneous black, shining, finely punctate; it is 

 clothed with longish, erect, yellow hairs, among which often more or 

 fewer black, especially at both ends and also towards the sides ; there 

 -are somewhat short notopleural and long postalar and scutellar marginal 

 bristles, the latter numerous and often pale at the apex; supraalar 

 bristles inconspicuous ; the fringe below scutellum long. Pleura with 

 longish, greyish hairs, generally black above. Abdomen black, the 

 second segment and the third except the basal parts towards the sides 

 duU; it is clothed with somewhat long, yellow hairs, longest at the 

 sides and towards the base ; in the middle line sometimes black hairs 

 and at the apex some black hairs and also often at the apical corners 

 of the third segment. Venter black, shining, with long, pale hairs. 

 Genitalia not large, grey pruinose. Legs with the femora black with 

 yellow apical part, tibiæ yellow with a black ring in the middle, 

 broadest on hind tibiæ ; tarsi yellow with the two or three last joints 

 black, hind tarsi also with the basal joints black above. Femora 

 somewhat long-haired. the hairs pale, but the bristly hairs on the 

 posterior side of the front femora black; hind femora black setulose 

 beneath only in the apical half, the bristles not short ; tibiæ with short, 

 pale hairs, hind tibiæ with a dorsal fringe which is long and dark on 

 the black part; hind metatarsus thickened. Wings a little yellowish 



