268 BULLETIN 116, UNITED STATES NATIONAL MUSEUM. 



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

 and Brues report it from Idaho and Vancouver Island. 



No. 196. DOLICHOPUS TALUS, new species. 



Male .— ladngih 4-6 mm.; of wing 4.5-5 mm. P'ace rather wide, 

 yellowish gray, nearly white below. Front shining green with 

 bronze reflections. Antennae bL*ick, first joint yellow except the 

 upper edge; third joint somewhat orbicular in outline, but the tip 

 slightly pointed. I^ateral and inferior orbital cilia yellow^ish, about 

 five of the upper cilia on each side black. 



Thorax green; the dorsum in one male has blue, in the other cop- 

 pery reflections, it is dulled with rather thin yellowish gray poUen, 

 pleurae with gray pollen. Abdomen green with coppery reflections; 

 the white pollen on its sides abundant. H^^opygium black; its 

 lamellae large, somewhat elliptical in outline, but narrowing into 

 the stem, twice as long as wide, whitish with a broad black border 

 on apical and upper margins, jagged and bristly on lower apical 

 corner, otherwise fringed with little black hairs. 



Fore coxae yellow, a little darker at base, their anterior surface 

 covered with white pollen and stifl" black hairs. Middle and hind 

 coxae black with yellow tips. Femora and tibiae yellow. Middle 

 and hind femora each with one preapical bristle, the latter without 

 cilia, but their lower edge with minute yellow hairs. Posterior 

 tibiae only a little thickened; the glabrous stripe on upper surface 

 distinct, but a little broken by a few hairs. Fore tarsi (fig. 196a), 

 about one and three-fourths times as long as their tibiae; first three 

 joints a little compressed but not widened except at tip of third, 

 glabrous on the sides, which are covered with white pollen; first 

 joint yellow with extreme tip and a line on upper and lower edges 

 black; last four joints black; second joint fully two-thirds as long 

 as first, third two-thirds as long as second; fomth somewhat trian- 

 gular, nearly as wide at tip as long, scarcely one-third as long as 

 third; fifth joint nmch compressed, as long as third and three-fourths 

 as wide as long, somewhat oval, fringed above with little black 

 hairs. Middle tarsi a little longer than their tibiae, black from the 

 tip of the first joint, which has a large bristle near apical third. 

 Hind tarsi blackened from the tip of the first joint. Calypters and 

 halteres yellow, the former with black cilia. 



Wings (fig. 196) grayish, sometimes tinged with yellowish brown 

 in front of third vein; costa not enlarged at tip of first vein; last 

 section of fourth vein bent before its middle; tiind margin of M'ing a 

 little indented at tip of filth vein and with a shallow sinus between 

 the tips of fifth and sixth veins; anal angle prominent, the wing 

 being of nearly equal width. 



Female. — Face wider than in the male but not very wide for a 

 female, grayish white; fore tarsi plain, black from the tip of the 



