THE DIPTEROUS GENUS DOLICHOPUS IN NORTH AMERICA. 41 



Bear Lake, British Columbia, July 20, by R. P. Currie, in the United 

 States National Museum collection. 



Type and allotype in the National Museum, from Mount Constitu- 

 tion, Washington. 



Type.— Ma,\e, Cat. No. 22977, U.S.N.M. 



No. 3. DOLICHOPUS BARBARICUS, new species. 



Male.— I jength, 4 mm.; of wing the same. Face rather wide, white 

 a little tinged with brownish below the antennae. Front green, not 

 very shining. Antennae (fig. So) wholly black; third joint small, 

 nearly round, but a little flattened in outline at tip. Proboscis and 

 palpi dark yellowish brown. Orbital cilia wholly black. 



Thorax green with bronze reflections, not very shining. Pleurae 

 more blackish, dulled with gray pollen. Abdomen green with cop- 

 pery reflections. Hypopygium black; its lamellae not very large, 

 somewhat triangular in outline, but rounded on lower and apical 

 edges, black, fringed on apical edge with black hairs, not or but little 

 jagged on apical border. 



Coxae, femora, tibiae and tarsi black, knees very slightly yellowish. 

 Fore coxae with white pollen and black hairs on their anterior sur- 

 face, these hairs longer than in many species. Middle and hind 

 femora each with two preapical bristles, placed one before the other; 

 the latter not ciliate, but with a row of delicate hairs on lower inner 

 edge, which become longer toward the tip of the femora. Hind 

 tibiae gradually a little thickened toward their tips, middle of their 

 inner side yehowish and with very short hair. Fore tarsi a little 

 longer than their tibiae; first joint nearly as long as the remaining 

 four joints taken together; fifth joint fully as long as the fourth. 

 Middle and hind tarsi each about one and a fourth times as long as 

 their tibiae. Calypters and halteres 3^ellow, the former with black 

 cilia. 



Wings (fig. 3) grayish; costa scarcely enlarged at tip of first vein: 

 last section of fourth vein bent near its basal third; hind margin of 

 wing scarcely indented at tip of fifth vein, nearly evenly rounded. 

 Taut the anal angle a little prominent. 



Described from 2 males from Colorado. 



Type in United States National Museum. Paratype in the Cornell 

 University collection. 



Tirpc. —Male, Cat. No. 22978, U.S.N.M. 



No. 4. DOLICHOPUS SORDIDATUS, new species. 



Male. — Length 4.5 mm. Face very broad, its pollen grayish white, 

 the black ground color showing through a little in the type specimen. 

 Front green with blue reflections. Antennae wholly black; third 

 joint a little longer than wide, obtusely pointed at tip; arista a little 

 longer than the antennae, lower half of the orbital cilia pale. 



