THE DIPTEROUS GENUS DOLICHOPUS IN NORTH AMERICA. 105 



tte dorsum. Hypopygium black; its lamellae rather small, some- 

 what triangular in outline but rounded at tip, whitish with black 

 apical border, not much longer than wide. 



Coxae black, scarcely yellow at tip. Fore femora black with their 

 tips broadly yellow. Middle and hind femora yellow, each with one 

 preapical bristle; middle pair narrowly black on the lower edge of 

 their basal half or more; posterior pair black at tip for a considerable 

 distance, but the yellow extending nearly to their tips on lower edge 

 and ciliated on lower inner edge with short yellow hairs (some- 

 times appearing blackish), which are about one-third as long as the 

 width of the femora. Fore and middle tibiae yellowish; posterior 

 tibiae black, a little yellowish at base, the black shading into the 

 yellow, slightly thickened. Fore tarsi one and a fourth times as 

 long as their tibiae ; fore and middle tarsi blackened from the tip of the 

 first joint; middle basitarsi without a bristle above. Hind tarsi 

 wholly black. Calypters and halteres yellow, the former with black 

 cilia. 



Wings (fig. 61) grayish; costa with a small knot-like enlargement 

 at tip of first vein; last section of fourth vein very slightly bent near 

 its middle; hind margin of wing evenly rounded, the anal angle 

 being only slightly developed. 



Described from 2 males from Labrador taken by Owen Bryant; 

 1 at Great Caribou Island, July 27; the other at Nain, July 18; 1 

 female at Ungava Bay, Labrador, July 29; and 1 pair at Hopedale, 

 Labrador, taken by Packard. 



Holotype in the collection of C. W. Johnson, taken on Great Caribou 

 Island, Labrador. 



Alloti/pe.—FemaXe, Cat. No. 23009, U.S.N.M., from Ungava Bay 

 (L. M. Turner). 



No. 62. DOUCHOPUS AMNICOLA Melander and Brues. 



Hygroceleuthits amnicola Melander and Brues, Biol. Bull., vol 1, p. 130, fig. 



Male. — ^Length 4.5-5 mm.; of wing 4.5 nun. Face rather wide, 

 pale golden yellow, long and rounded below. Front green with 

 bronze reflections in the center. Antennae long; first joint long, 

 yellow, usually black above; second joint black on upper half or two- 

 thirds, yellow below; third joint black, longer than wide, somewhat 

 oval but a little pointed at tip. Proboscis black. Palpi yellow with 

 black hairs. Lateral and inferior orbital cilia yellow, about twelve of 

 the upper cilia on each side black. 



Thorax black with bronze reflections, which sometimes form narrow 

 vittae on the dorsum, the anterior portion of which has considerable 

 yellowish gray pollen; pelurae dulled with white pollen. Abdomen 

 green with coppery reflections, tergum with white pollen which is 

 scarcely thicker on the sides. Hypopygium black; its lamellae of 



