Dolichopodidse of St. Vincent {West Indies). 331 



shaped, in its vertical diameter very large, on the apical side near 

 the middle suddenly drawn out into a long, narrow point ; arista 

 inserted just before, or in some cases almost exactly at, the apex 

 of the prolongation, moderately long, pubescent ; the whole inner 

 and lower surface of the third joint is light pilose. Cilia of the 

 inferior orbit white, a considerable amount of long white hair 

 behind them. Thorax golden-green on the middle, more or less 

 covered with pollen, around the margins more pollinose ; acrosti- 

 chal bristles few, in two rows ; the small humeral bristles number 

 only about half-a-dozen on a side ; about the base of each large 

 bristle is a black dot. Pleurae greenish-black, dusted with white. 

 Tegulae and halteres light yellow, cilia of the former whitish. 

 Abdomen dark green, more or less thickly dusted, sometimes with 

 a bronze reflection. Seen from above, the first segment is very 

 broad with parallel sides ; the rest are successively narrower, 

 rapidly tapering. The green colour ends with the fifth segment, 

 the following one is black. From the side, the abdomen is slender 

 the dorsum, and venter nearly parallel to the fifth segment. The 

 following two are somewhat excavated on the under side, but only 

 the tips of one or two small organs are visible. Coxae black, 

 about the apex sometimes slightly yellowish. The front and 

 middle ones with a few black hairs and bristles on the front side ; 

 hind ones with one lateral bristle. Front and middle femora 

 yellow, with more or less of a blackish tinge along the upper side. 

 The middle ones are lighter-coloured than the front ones. Hind 

 femora wholly greenish-black. All the tibi^-yellow, tarsi-yellow, 

 gradually infuscated from the tip of the first joint. Pulvilli of 

 ordinary size. In one single specimen out of fifty examined there 

 is, on the middle of the lower surface of one of the hind 

 metatarsi, a slender erect bristle. This is probably abnormal. 

 Venation normal, the same as figured by Loew for C. obliquus 

 (Mon., N.A. DoL, PI. VI., 31). 



2 . Face rather wide, not narrowed in the middle ; this and the 

 front often with a steel-blue reflection, somewhat dusted with 

 white or yellowish. Below the middle of the face the contour is 

 interrupted by a suture, except in the middle ; below this the face 

 is more prominent. The oral cavity and the proboscis are much 

 larger than in the male. Palpi large, flat, yellow, sometimes 

 brownish, with white or yellow pollen. Proboscis projecting 

 below the head, black. Antennae as in the male, but the third 

 joint not at all drawn out, simply crescent -shaped, at most a little 

 triangular. Arista apparently apical. Behind the orbital cilia 

 but a few hairs. Colour of thorax and abdomen more opaque than 



