THE DIPTEKOUS GENUS DOLICHOPUS IN NORTH AMERICA. 179 



Redescribed from many specimens from the following localities; 

 Toledo, Ohio; Lafayette, Indiana, June 20-Juiy 4; Erie County, 

 New York, June 18-August 8; Niagara County, New York, August 4; 

 Fort Erie, Ontario, June 20-July 13; Black Creek, Ontario, July 24; 

 Niagara Falls, Ontario, July 31. 



Type locality. — Douglas County, Kansas, June 24. 



Type. — In the collection of the University of Kansas. 



No. 125. DOLICHOPUS FLAGELLITENENS Wheeler. 



DoUchopus flagelKtenens Wheeler, Psyche, vol. 5,' 1890, p. 339. — Aldrich, 

 Kansas Univ. Quart., vol. 2, 1893, p. 13, pi. 1, fig. 11.— Melander and 

 Brues, Biol. Bull., vol. 1, 1900, p. 148. 



Male. — Length 4.5-5.5 mm.; of wing 4.2-4.75 mm. Face moder- 

 ately wide, pale golden yellow, sometimes more yellowish white. 

 Front green, often with bronze reflections. First antennal joint 

 yellow; second yellow on lower half, black above, sometimes only 

 the upper edge black; third joint black, somewhat oval, a little longer 

 than wide. Proboscis black; palpi yellow. Lateral and inferior 

 orbital ciha yellow, about eight of the upper cilia on each side black. 



Thorax green, sometimes with coppery reflections, which often 

 form a median vitta on the dorsum, the front and central portion of 

 which has rather thick gray pollen; pleurae duUed with white pollen. 

 Abdomen green with coppery reflections; the white poUen on its 

 sides forming spots on the lower edges of the segments. Hypo- 

 pygium black; lamellae (fig. 125a) rather large, somewhat oval in 

 outline, twice as long as wide, whitish with rather wide apical and 

 narrow upper border of black, jagged and bristly at apex, fringed 

 above with little black hairs and below with a few delicate yellow 

 ones. 



Fore coxae yellow, with the extreme base a little blackened, their 

 anterior surface covered with black hairs. Middle and hind coxae 

 black, with broad yellow tips. Femora and tibiae yellow. Middle 

 and hind femora each with one preapical bristle, the latter Vv-^ithout 

 cilia below, but with the black hairs on the sides reaching the lower 

 edge. Posterior tibiae thickened, their apical haK black, still the 

 yellow often extends to the tip on the lower surface; the glabrous 

 stripe on upper surface distinct and reaches their entire length but 

 is a little broken by a few hairs. Middle tibiae with four bristles on 

 lower surface, one pair near apical third and two at equal distances 

 toward their base. Fore tarsi (fig. 125&) nearly one and a third 

 times as long as their tibiae, the first four joints taken together 

 about equal to the tibia in length; second joint half as long as first 

 and a little more slender; first three and most of fourth yellow, some- 

 times mostly black; third and fourth taken together but little more 

 than half as long as second, fourth slightly shorter than third, as 



