THE DIPTEPtOUS GENUS DOLICHOPUS IX NORTH A:\IEHICA. 287 



and a fourth times as long as their tibiae. Calypters and halteres 

 yellow, the former with black cilia. 



Wings (fig. 210) tinged with yellowish brown ; costa a little enlarged 

 at tip of first vein, tapering to its tip; second and third veins con- 

 siderably arcuated and bent backward at tip; last section of fourth 

 vein bent before its middle; beyond this bend it is a little arched; 

 hind margin of wing notched at tip of fifth vein; anal angle cut off 

 nearly parallel with sixth vein, not rounded, the wing being narrowed 

 at its base. 



Female. — Face wide, grayish; hind femora without cilia; fore tarsi 

 plain, one and a fourth times as long as their ti])iae, black from the 

 tip of the first joint; fifth joint as long as third, fourth shorter; wings 

 with the veins less arcuated and the anal angle slightly more rounded. 



Redescribed from the type which was taken in California; 2 males 

 and 2 females taken at Corvallis, Oregon, July (Aldrich) ; 2 males 

 taken at Salem, Oregon, July 4 ; and 1 female taken at Fieldbrook, 

 California, May 31. 



The male and female both sometimes have a second bristle on 

 upper edge of middle basitarsi before the middle, which is smaller 

 than the one near basal third. 



Types. — University of Kansas and in Aldrich collection. 



No. 211. DOLICHOPUS SUPERBUS, new species. 



Male. — ^Length 5.5-7 mm.; of wing 6-7 mm. General color, pol- 

 len of thorax, face and front, bristles of middle tibiae and basitarsi, 

 and form of wing, the same as in grandis Aldrich, except that the 

 bend on the last section of fourth vein is at or very near basal third 

 and the anal angle of wing is shghtly more rounded (fig. 211). The 

 hypopygial lamellae (fig. 2116) are long and narrow, being four times 

 as long as wide; they taper abruptly and nearly evenly at tip into a 

 rather long and acute point ; are white with a moderately wide black 

 border around the apical end ; there are one or two branched bristles 

 below the point at tip; this point is black and fringed with long, 

 delicate yellowish hairs, both above and below as well as at tip; 

 some of these hairs may have a brownish color, upper edge fringed 

 with black hairs and lower edge with little pale hairs. Middle and 

 hind femora each with one preapical bristle, the latter with a few 

 yellowish hairs on lower inner edge near apical third, the longest 

 being nearly half as long as width of femora; they become shorter 

 rapidly both toward base and tip, although continued the whole length 

 of the femora by minute yellow hairs ; there are scarcely enough of 

 these hairs to call them cilia. Hind tibiae as in grandis. Fore tarsi 

 (fig. 211a) one and two- thirds times as long as their tibiae; first three 

 joints yellow, still the third is sometimes almost black, second and 

 third very thin, glabrous on the sides, second fringed on edges with 



