AMERICAN DIPTERA. 257 



of the wings simple; discal cell emitting three posterior veins; anal 

 vein (at least in our species) distinct beyond the anal cell. 



Notwithstanding the fact that I have at hand no specimens of 

 Mr. Coquillett's species, added to the superficial character of his de- 

 scriptions, yet, without great hesitation, I have placed his species in 

 this European genus. 



Black, the legs largely yellow flavipilosa Coquillett. 



Yellow, a median vitta brown crocata Coquillett, 



Eutliyueura flavipilosa Coquillett. 

 Microphorus flavipilosus Coq., Proc. Wash. Acad. Sci., 1900, p. 413. 



Male. — Black, the hairs, stems of halteres, femora and tihise, yellow, knobs of 

 halteres and the tarsi brown ; eyes of male contiguous, third joint of antenna' 

 sublanceolate, only slightly tapering to the apex, over four times as long as the 

 style, proboscis noticeably shorter than height of head, mesonotum highly pol- 

 ished, scutellum bearing about ten marginal bristles, abdomen slightly polished, 

 hairs of legs sparse and rather short, first joint of hind tarsi slightly tliicker than 

 that of any of the others; wings hyaline, stigma smoky hrowu, veins yellowish 

 brown, last section of fifth vein one-fourth as long as the preceding section, sixth 

 vein reaching almost to the wing margin. 2 mm. 



British Columbia. 



Euthyneura croeata Coquillett. 

 Microphones crocatus Coq., Proc. Wash. Acad. Sci., 1900, p. 413. 



Female. Yellow, the head and its members, a median vitta on mesonotum. 

 dorsum of abdomen and apices of tarsi dark brown, third joint of antennae sub- 

 lanceolate, only slightl.v tapering to the apex, about twice as long as wide, five 

 times as long as the style ; proboscis about as long as height of head ; hairs of 

 body sparse and rather short, yellow; mesonotum polished, scutellum bearing 

 about eight bristles, abdomen polished ; hairs of legs very short, first joint of hind 

 tarsi slightly thicker than that of any of the other tarsi ; wings hyaline, veins 

 yellowish brown, stigma almost obsolete, last section of fifth vein nearly half as 

 long as the preceding section, sixth vein ending a short distance fron^ the wing 

 margin. 2 mm. 



Alaska. 



liEPTOFEZA Macquart. 

 Rather small, almost glabrous species of shining black or reddish 

 color, with very slender abdomen. Antennse shorter than the head, 

 three jointed, the third joint elongate-oval, with a long terminal 

 bristle. Otherwise as in Ocydromia. There is indication of a vein 

 arising from the front of the discal cell and extending towards the 

 margin. 



Black ; wings light brown flaTJpes Meigen. 



Wings hyaline 2. 



TRANS. AM. ENT. SOC, XXVIII. (33) AUGUST, 1902. 



