72 Syrphidae. 



it is clothed with quite short, black hairs, a little longer and yellowish 

 on the side-elevations, and also longer but dark at the side-margin. 

 Venter black, shining, a little translucent at the base; it has short, 

 cliiefly black hairs. Legs black or dark piceous, anterior knees pale, 

 front tibiæ slightly pale at the apex and front tarsi yellow except the 

 last or two last joints; middle metatarsi generally pale on the basal 

 part. The middle coxæ have a straight downwards directed spine 

 anteriorly; the hind coxæ have a short spine at the apex outwards, 



Fig. 21. Antenna of C. fulvimanus c?, from the inside. X 80. 



and the trochanters a long spine at the apex on the front side; this 

 latter has a dilatation somewhat before the apex on the posterior 

 side, the apical part is flattened and slightly excised between the 

 dilatation and the apex; the spines are black or more or less pale. 

 especially on the apical parts. The front tibiæ have a small dilata- 

 tion on the posterior side; the middle tibiæ are somewhat dilated, 

 with a keel along the anterior side which stops about one third from 

 apex and here forms like a small knob; it is inconspicuously serrated; 

 the front metatarsus is a little compressed, middle metatarsus likewise 

 and a little arched; hind metatarsus somewhat thickened, The legs 

 are chiefly dark-haired, the hairs are long on posterior side of the 

 anterior femora and anteriorly on the hind femora; the hind tibiæ 

 have a fringe above, and anteriorly to this there is a row of some- 

 what distant, fine spines, which are observed only with difficulty; for the 

 rest the legs are short-haired. Wings a little tinged. Stigma brown 

 or light brownish; upper marginal cross-vein with a distinct angular 

 bend. Squamulæ smoky or of a dirtily whitish or greyish colour, 

 with a yellowish or brownish fringe. Balteres whitish or yellow. 



Female. Vertex and frons black, black-haired, the depression 

 across the middle yellow-haired, and likewise the ocellar triangle. 

 Epistoma yellow-haired and likewise occiput, the latter greyish pruinose 

 downwards. Antennæ short as in the male, the third joint larger. 



