74 Syrphidae. 



below, bul the jowls chiefly dark-haired. Antennæ short, third joint 

 slightly longer than broad; they are black, third joint more or less 

 yellowish al the base beneath; arisla as long as the antennæ. Eyes 

 brown- or pale-hairy. Thorax æneous black, finely punctate; il is 

 densely clothed with long, white or whitish hairs, only dark at the 

 margin of sculellum, and somelimes just at the front of thorax. Pleura 

 dark-haired. Abdomen duU black, shining just at the side-margin, at 

 the hind margin of fourth segment and on the side-elevations of third 

 and fourth segments. Il is clothed with quite short, black hairs, on 

 the side-elevations the hairs are pale and a little longer, and at the side- 

 margin they are pale and long, longest at Ihe basal corners. Venter 

 black, shining, a little paler at the base, with fine, chiefly brown hairs. 

 Legs shapcd and armed quite as in fnlvimatms, but they are rela- 

 tively stronger; they are black or dark piceous, the anterior knees 

 somewhat broadly yellow, the apical part of the front tibiæ and the 

 tarsi except the last or two last joints yellow, the middle metatarsus 

 likewise more or less yellow. The legs are haired as in fulvimanus, 

 but the hairs are more or less whitish on the hind femora and on the 

 front side and at the base on the posterior side of the middle femora ; 

 the fringe on hind tibiæ longer than in fnlvimanus. Wings yellowish 

 tinged. Stigma yellow; upper marginal cross-vein less angularly bent 

 than in fulvimanus, though the difference may be slight. Squamulæ 

 smoky, with a pale fringe. Halteres yellow. 



Female. Vertex and frons black or bluish black, with blackish 

 or dark brownish hairs, the depression across the middle and the 

 ocellar Iriangle yellow-haired ; epistoma and occiput whitish-haired, 

 the latter greyish pruinose below. Antennæ larger than in the male, 

 third joint distinctly longer than broad. Eyes quite short-haired. 

 Thorax and sculellum black or often bluish black, with short, white 

 hairs; pleura with longer, likewise white hairs. Abdomen black, but 

 often somewhat translucently brownish or rufescent; il is more coarsely 

 punctate than in fulvimanus and not much shining, clothed with quite 

 short, whitish hairs, longer at the basal corners. Legs simple, front 

 tarsi darker, generally only the metatarsus pale; the legs are quite 

 white-haired, the fringe on hind tibiæ conspicuous, longer than in 

 fulvimanus. 



Length 5,8 —7 mm. 



This species is much like the preceding, especially as the shape 

 and armalure of the legs of the male is quite the same; in the male 

 il is distinguished by the paler pubescence on thorax, sculellum and 

 the abdominal side-margin, and also parlly on the legs, and in the 

 female by the distinctly longer third antennal joint and the whiter 



