102 51R. E. E. .vrSTEX ox XEAV DIPTEROUS IXSECTS. [Jnil. 17, 



ceous rufous, third joint rather hroad (actual]}' Inrger than in 

 tS. virgata, aUhough tt e insect itself is smaller), rounded at the tip ; 

 arista dark brown ; the black stripes on the dorsum of the thorax 

 consist of a Aerv narrow median one, and a broader one on each 

 side of it : the stripes converge posteriorly, and apparently fuse a 

 short distance before the scutellum, which they do not reach ; 

 each of the broader black stripes is separated from the narrow 

 median one by a stripe of the ground-colour rather broader than 

 itself ; there is an indication of a faint brown stripe on each side 

 of the dorsum, \\\i\) a conspicuous dark brown spot behind the 

 suture, where it is joined by the brown stripe of tlie pleurre, which 

 curves round the front of the base of tho wing; there is also a 

 dark brown spot beneath the shining yellow post-alar callosities. 



Brazil, Para (Bates) : one specimen. 



This sjiccics is disiinr/iiisJied, hij the marlcings of the dorsum of the 

 thorax, from any other Salpingogaster yet descrihed. 



B R A c H T o p 1 >' I, Williston. 

 Synopsis X. Amer. Syrphida?, Bull. 31, U.S. Xat. Mus. p. xxii. 



EiiixGiA, Scop. 

 Ehixgia SEiii-c.ERrLEA, sp. n. (Plate V. figs. 1, 2, cJ.) 



c? . Length 11 g mm. 



Dorsum of thora.v deep metallichlue round the side!^, greenish hronze 

 on the central area ; scutellum metallic hhie, darlcish hronze at the, 

 base in the centre ; pectus and pleura; metallic plum-purpde, some of 

 the divisions with ochraceous undertints ; ahdom,en brassy ochraceous, 

 pale yelloivish at the base, hind margins of the segments narroivly 

 blacic ; tuings u:ith a very faint ochreovs tinge, nearly hyaline, the 

 subcostal cell not darker ; halteres yellow ; legs yelloiv, the last four 

 joints of the posterior tarsi brown. 



Face, epistoma, and frontal triangle shining ferruginous ; vertical 

 triangle dark blue; antennce ferruginous, rather more than the 

 basal half of the arista yellow, the rest brown ; thora.v nnd scutellum 

 finely punctate, clothed with short dark pile : post-alar tubercles 

 ochraceous rufous, with a purplish blotch on the outside. Abdo- 

 men: first segment pale yellowish, Avith the black hind-margin 

 confined to a very narrow streak on each side of the median line, 

 not reaching to the sides ; second segment yellowish on the basal 

 two-thirds, then brassy ochraceous, like the remainder of the 

 abdomen ; the shining black hind-margins of this and the two 

 following segments are very sharply defined ; the second segment 

 has a fringe of pale yellow pile on each side, longer towards the 

 base ; third and fourth segments thinly clothed with pale yellow- 

 pile, which is longer on the fourth segment. 



Sierra Leone (Fo.vcroft) : one specimen. 



This species is alhed to Wi. caridescns, Lw. (' Dipterenfauna 

 Siidafrika's,' p. 302 [374], from Caffrai-ia, but is distinguished at 

 once bv the colour of the thorax and abdomen. 



