AMERICAN 1>IPTERA. 257 



of the wings simple; diseal 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 Cnquillett. 



Yellow, a median vitta brown crocala Coquillett. 



Eutliyneura flavipilosa Coquillett. 

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



Male. — Black, the hairs, stems of halteres, femora and tibise, 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 liead, mesonotuni 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 thicker than 

 that of any of the others; wings hyaline, stigma smoky brown, 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. 



Eiitliynetira crooata Coquillett. 

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



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

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

 lanceolate, only slightly 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; mesonotuni 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 from the wing 

 margin. 2 mm. 



Alaska. 



L.EPTOFEZA Macquart. 



Rather small, almost glabrous species of shining black or reddish 

 color, with very slender abdomen. Antennae 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 diseal cell and extending towards the 

 margin. 



Black ; wings light brown flavipes Meigei' . 



Wings hyaline 2. 



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



