104 BULLETIl^ 116, UNITED STATES NATIONAL MUSEUM. 



No. 60. DOLICHOPUS SOLIDUS. new species. 



Male. — Length 4.75 mm. ; of wing 4.5 mm. Face wide, covered 

 with white pollen, which has a slight yellowish tinge. Front shining^ 

 green. Antennae black, normal; third joint a little longer than 

 wide, somewhat pointed at tip. Lateral and inferior orbital cilia 

 whitish, about seven of the upper cilia on each side black. 



Thorax dark green, somewhat dulled with brown pollen on the 

 dorsum; pleurae dulled with white pollen. Abdomen green with 

 coppery reflections, black incisures and white pollen; the latter 

 forms large spots on the sides on the segments. Hypopygium black; 

 its lamellae of moderate size, oval but narrowing into the stem, 

 whitish with a black border, which is rather broad on apical margin, 

 very narrow on upper and lower edges, but extending to the stem, 

 somewhat jagged and bristly at apex, fringed above with delicate 

 hairs. 



Coxae black with their extreme tips yellowisji; anterior surface of 

 fore coxae with white pollen and little hairs which appear to be 

 partly black and partly white. Fore femora black with their tips 

 broadly yellow. Middle femora yellow with a blackish line below on 

 basal two-thirds. Hind femora yellow with their upper surface black 

 nearly to the tip. Middle and hind femora each with one preapical 

 bristle, the latter ciliate on lower inner edge with yellow hairs which 

 have a blackish appearance in certain lights and are scarcely as long 

 as the width of the femora. Fore and middle tibiae yellow. Hind 

 tibiae yellow at base becoming black at tip, the apical half being 

 mostly black. Fore and middle tarsi black from the tip of the first 

 joint (the apical joints of both are missing in the type). Hind basi- 

 tarsi black (other joints missing). Calypters and halteres yellow, the 

 former with black cilia. 



Wings (fig. 60) tinged with brownish; costa with an elongate, but 

 small enlargement at tip of first vein; last section of fourth vein 

 bent at its middle; hind margin of wing scarcely indented at tip of 

 fifth vein; anal angle rather prominent. 



Described from 1 male taken on the Alaska- Yukon boundary, lon- 

 gitude 141°; latitude 69° 10', August 14-17, 1912, by J, M. Jessup. 



r;/2)e.— Male, Cat. No. 23008, U.S.N.M. 



No. 61. DOLICHOPUS BRYANT!, new species. 



Male. — Length 4.2 mm.; of wing 3.7 mm. Face wide, narrower 

 below, silvery white. Front dark shining green. Antennae wholly 

 black; third joint about as long as wide, conical in outline; arista 

 rather short. Lower half of the orbital cilia white, upper half mostly 

 black. 



Thorax dark green, somewhat dulled with brown pollen on the 

 dorsum. Abdomen green, the white pollen of the sides extends over 



