THE DIPTEROUS GENUS DOLICHOPUS IX XOETH AMERICA. 285 



bare below. Middle tibiae with one large bristle below, their basitarsi 

 with one rather large bristle above near apical third. Posterior tibiae 

 very little thicker than the others; the usual glabrous stripe on upper 

 surface not conspicuous, their inner surface with a narrov>' glabrous 

 streak at basal third which may be easily overlooked. Fore tarsi (fig. 

 2096) about one and a half times as long as their tibiae; the first 

 two joints being nearly as long as the tibia; three first joints brown- 

 ish yellow, last two black; second joint three-fourths as long as 

 first, third two- thirds as long as second, slightly widened at tip; 

 fourth joint one- third as long as third, somewhat triangular, about as 

 wide at tip as it is long; fifth joint much compressed, about as long 

 as third and nearly as wide, somewhat oval; fourth and fifth joints 

 fringed above with little black hairs. Middle tarsi one and a fourth 

 times as long as their tibiae, black from the tip of the second joint^ 

 still the second joint is often brownish. Hind tarsi blackened from 

 the tip of the first joint, their basitarsi with two large bristles above. 

 Calypters and halteres yellow, the former with black cilia. 



Wings (fig. 209) grayish; costa not enlarged at tip of first vein; 

 last section of fourth vein bent at its middle; hind margin of wing; 

 indented at tip of fifth vein, rather evenly rounded, the anal angle 

 being rounded, not prominent. 



FeTnale. — Face wider than in the male; antennae, coxae and wings 

 as in the male, except that the wing of the female is more tinged 

 with brown, especially in front of third vein; the middle tibiae have 

 three bristles below, two near apical third and one near basal third, 

 their basitarsi without a bristle above; hind basitarsi with one large 

 bristle above; fore tarsi plain, a little infuscated toward their tips, 

 sometimes quite brownish from their base on upper edge, a little 

 longer than their tibiae, fourth and fifth joints of about equal length. 



Redescribed from 11 males and 3 females from the collection of 

 J. M. Aldrich. Two were taken at Keyport, Washington, August 7; 

 3 at Seattle, Washington; 5 at Moscow, Idaho; 2 at Viola, Idaho; 

 and 2 at Horseshoe Bend, Idaho, June 24. There is a specimen in the 

 United States National Museum taken on the campus at Stanford 

 University, California, September 26, 1909. A. L. Melander took a 

 female at Thompson, Montana, Augnst 25. 



Type locality. — ^Washington. 



Type. — In the collection of the Universit}^ of Kansas. 



No. 210. DOLICHOPUS GRANDIS Aldrich. 



Dolichopus grandis AhBRicn, Kansas Univ. Quart., vol. 2, 1893, p. 21, pi. 1, fig. 22. 



Male. — Length 6.8-7.8 mm.; of wing 7-7.3 nam. Face rather 

 wide, white, yellowish above. Front shming gi'een with slight bronze 

 reflections. Antennae yellow; third joint a little infuscated at tip^ 

 187329—21 ^19 



