THE DIPTEROUS GENUS DOLICHOPUS IN NORTH AMERICA. 83 



Described from 2 males taken by A. L. Melander in Washington; 

 1 at Seattle, August 2, 1908, the other at Tacoma, August 27, 1911. 



Type.- — In the collection of A. L, Melander, and taken at Tacoma, 

 Washington. 



No. 43. DOLICHOPUS PACKARDI, new species. 



Male. — Length 4 mm.; of wing the same. Face quite wide, a 

 little narrowed below, silvery white. Front blue green, dulled with 

 gray pollen. Antennae wholly black; third joint only a little longer 

 than wide, conical in outline with the apex a little rounded. Orbital 

 cilia black, but back of these, near the proboscis are several small 

 and one or two large yellowish bristles. Proboscis and palpi black. 



Thorax bronze brown with green reflections, dorsum dulled with 

 grayish pollen, which forms indistinct vittae, this pollen is more 

 white along the anterior and lateral margins of the dorsum; pleurae 

 dulled with gray pollen. Abdomen green with coppery reflections; 

 hind margins of the segments black; the white pollen on the sides 

 abundant and extending over the dorsum. Hypopygium black; its 

 lamellae moderately large, somewhat elliptical in outline with a 

 slight sinus below, white with a broad black border on apical margin, 

 which extends narrowly along the upper and lower edges, jagged and 

 bristly at apex, fringed above with blackish hairs. 



Coxae and femora black, with their extreme tips a little yellowish. 

 Fore coxae thickly covered with white pollen and little black hairs 

 on their anterior surface. Middle and hind femora each with one 

 preapical bristle, the latter ciliate on lower inner edge with a few 

 long pale hairs which appear more black at their base; the longest 

 of these hairs are near the middle of the femora and are as long as 

 the width of the femora; these cilia are continued nearly to the base 

 of the femora by short brownish hairs. Tibiae yellow; middle pair 

 a little infuscated at tip and with five bristles on lower surface; 

 posterior pair a little thickened, black at tip, the black shading into 

 the yellow; the glabrous stripe on upper side can be seen as a shining 

 line between the rows of large bristles ; there is also a glabrous space 

 on inner surface, wide at base of tibiae and tapering to a shining 

 line just inside of the inner row of bristles and extending to the tip. 

 Fore tarsi nearly one and a half times as long as their tibiae, black 

 almost to their base, which is a little yellowish brown, the joints of 

 regularly decreasing length. Middle tarsi blackish, one and a half 

 times as long as their tibiae, their basitarsi with a bristle above and 

 several small ones below. Hind tarsi black, nearly twice as long as 

 their tibiae, their basitarsus two-thirds as long as the tibia. Calyp- 

 ters and halteres yellow, the former with black cilia. 



Wings (fig. 43) dark grayish, slightly tinged with brown in front and 

 along the veins; costa a very little thickened at tip of first vein, 



