206 ERNEST A. BACK. 



more deeply tinged with yellow; the bristles of the body are 

 more golden. There are other specimens in the collection of 

 Prof. C. W. Johnson from Boulder Canon, Col., which are 

 doubtless latipennis. See note under consangineus. 



Steiiopogon ijumilus. 



Stenopogon pumilus Coquillett, Jour. N. Y. Ent. Soc, XII, 1904. 



(^ 9 • — Length 14 mm. — -Near consanguineiis but smaller, not reddish, 

 but blackish and clothed quite uniformly with a grayish bloom. 



Black, the upper side of the front and middle femora, their tibiae and 

 tarsi reddish-yellow, all the claws yellowish at base, pulvilli pale. 

 Head, thorax and abdomen clothed with a rather dense brownish-gray 

 bloom; the thoracic dorsum with two narrow median dark-brown 

 stripes abbreviated posteriorly. Proboscis, palpi and antennae black; 

 the third antennal segment elongate, thin, about ten times as long as 

 the very short style. Mesopleurse bare, sternopleurae with a patch of 

 inconspicuous white short pile, hypopleurae with very inconspicuous 

 pile, but without well-developed hair or bristles. Bristles of face and 

 coxae white, those of the front, occiput, lateral margins of thoracic 

 dorsum, scutellum and sides of the first abdominal segment more 

 sordid yellowish-white; hair of the front in part black. Hair of all 

 the legs sordid white, the bristles of the front and middle pairs largely 

 white, the remainder and nearly all of those of the hind pair black. 

 Halteres yellowish. The wings reach but little beyond the tip of the 

 fifth abdominal segment, dark brown along the broad hind margin 

 and apex, elsewhere largely tinged with yellowish; veins brown and 

 yellowish, narrowly bordered with grayish; first posterior cell scarcely 

 narrowed toward margin, the fourth closed at varying distances from 

 the margin. 



Type. — Two male specimens, at least one being at the 

 Brooklyn Institute. 



Habitat. — Brownsville, Tex. (Apr. and May, type) ; Clark 

 Co., Ks. (June, elev. 1,962 ft., F. H. Snow). 



The extreme base and tip of the abdominal segments are 

 yellowish in greased specimens. One female has the sides of 

 the prothorax, the front and middle coxae, and a narrow line 

 on the hind femora reddish; the last two abdominal segments, 

 as usual, are polished. 



Stenoi>os«>ii tenebrosus. 



Stenopogon tenebrosus Coquillett, Jour. N. Y. Ent. Soc, XII, 

 33, 1904. 

 " c^. — Length 22 mm. — Near consanguineiis, but much darker, the 

 wings brown and without any yellow coloring. Black; the halteres. 



