64 BULLETIN 116, UNITED STATES NATIONAL MUSEUM. 



Thorax green with coppery reflections; pleurae dulled with grayish 

 pollen. Abdomen green with coppery reflections and black incisures, 

 somewhat dulled with white pollen, which forms large spots on the 

 sides of the segments. Hypopygium black; its lamellae large, round- 

 ed apically, sordid whitish with broad black apical border, a little 

 jagged and bristly at apex, fringed with delicate hairs on upper edge. 



Coxae black with grayish pollen; anterior pair with small black 

 hairs on anterior surface, the usual row of bristles at tip rather small. 

 Femora black, fore and middle pairs becoming yellowish on apical 

 third, the yellow extending farther toward the base on the sides of 

 the middle pair, which have a shining black spot at base on posterior 

 surface. ^Middle and hind femora each with one preapical bristle, 

 the latter without cilia below. Fore and middle tibiae yellow, some- 

 times a little darkened; hind tibiae and tarsi black, the former with 

 a narrow glabrous stripe above, just inside of the inner row of large 

 bristles, very slightly swollen at basal third on inner side and at tip; 

 fore and middle tarsi a little longer than their tibiae, black from the 

 ti]) of the first joint. Calypters and halteres yellow, the former with 

 black cilia and the latter with their stems darkened. 



Wings grajnsh (fig. 26), tinged with brown in front, which color 

 fades out at the fourth vein; costa with a small knotlike enlargement 

 at tip of first vein; last section of fourth vein shghtly bent just before 

 its middle; tip of third vein bent backward, but not very close to tip 

 of fourth vein at the wing margin; hind margin of wing scarcely 

 indented at tip of fifth vein; anal angle prominent. 



Described from 1 male taken by me at Brawn's Mills Junction, 

 New York, June 9, 1907. 



Type.—MaXe, Cat. No. 22989, U.S.N.M. 



No. 2GA. DOLICHOPUS BURNESI, new species. 



Male. — ^Length 4 mm. ; of wing 5.4 mm. Face narrow, silvery white, 

 a little yellowish above. Front dark shiidng green. Antennae 

 wholly black; third joint scarcely longer than wide, obtusely pointed 

 at tip. Lateral and inferior orbital cilia whitish, about nine of the 

 upper cilia on each side black. Proboscis and palpi black, the latter 

 with a little white pollen. 



Thorax and abdomen dark green or blue-green, very shining. 

 Pleurae dulled with white pollen. The white pollen on the abdomen 

 forms spots on the sides of the segments and extends upon the dorsum. 

 Hypopygium black, its lamellae rather large, somewhat triangular, 

 but a little rounded on apical margin; yellowish white, more yellow 

 near the edges, with a broad black apical border, which shades into 

 the yellow color extending along its inner edge; apical margin jagged, 

 with one or two branched bristles at the lower corner, and long bristle- 

 like hairs above them. 



