250 BULLETIN lie, UNITED STATES NATIONAL MUSEUM. 



pointed at the tip. Lateral and inferior orbital cilia yellowish white, 

 about seven of the upper cilia on each side black. 



Thorax green, dorsum a little dulled with pollen, which is gray 

 along the front, becoming more brownish on the disk; and with a 

 median coppery vitta, whicli i^ divided by a fine green line; pleurae 

 dulled with gra}' pollen. Abdomen green with narrow black inci- 

 sures, in front of which there are coppery reflections; the white pollen 

 on its sides abundant and extending upon the dorsum. Hypopygium 

 black, rather short; its lamellae (fig. lS3a) small, triangular, but 

 rounded at apex, yellowish with a broad black apical border, a little 

 jagged and bristly at lower corner, otherwise fringed with little black 

 hairs on apical and upper margins, and hairy on the disk. 



Fore coxae wholly yellow, their anterior surface covered with 

 minute black hairs; there are only a few pale hairs at upper outer 

 corner. Middle and hind coxae black with yellow tips. Femora 

 and tibiae yellow. Middle and hind femora each with one preapical 

 bristle, the latter nearly bare below, but with a row of minute yellow 

 hairs on lower inner edge. Posterior tibiae scarcely thickened. 

 Middle tibiae with a pair of bristles at basal third below and one 

 large and two small bristles before them on the lower edge; their 

 basi tarsi with one large bristle near apical third of upper edge. Fore 

 and middle tarsi about one and one third times as long as their tibiae, 

 black from the tip of the first joint; fore tarsi with the fifth joint as 

 long as third and a little longef than fourth, a very little compressed, 

 first joint as long as the three following joints taken together, second 

 a little longer than third. Hind tarsi black from the tip of the first 

 joint, which is pale yellow. Calypteres and halteress yellow, cilia of 

 the former yellowish. 



Wings (fig. 183) grayish; costa without an enlargement at tip of 

 first vein; last section of fourth vein bent beyond its basal third; 

 third vein nearly parallel with fourth; hind margin of wing scarcely 

 indented at tip of fifth vein; anal angle prominent but roimded. 



Female. —Face a little wider than in the male, yellowish gray; 

 cilia of the calypters, anterior coxae, antennae and wings about as 

 in the male; fore and middle tarsi a little shorter, fifth joint of the 

 former not at all compressed, as long as third, the fourth being 

 shorter as in the male; middle basitarsi without a bristle above, but 

 it has a very small one below (the bristle on upper side may have 

 been broken off, but I do not think so). 



Described from 1 pair taken at Little River, Newfoundland, July 

 18, by P. G. Bolster. 



HvlvUjpe and allotype. — In the collection of C, W. Johnson, 



