316 DIPTERA FROM SOUTHWESTERN UNITED STATES 



Hylemyia substriata Stein 



1897. Chorlophila suhsiriaia Stein, Berl. Ent. Zeit., xlii, 233. 



One male which agrees in all particulars with the type, which is 

 before me, bears data as follows: Berkelej'^ Hills, Alameda County, 

 California, March 22, 1908. 



There are also two females which belong to this species from 

 Cloudcroft, New Mexico, May 26, 1902. 



Hylemyia sp. 



This species closelj' resembles substriata Stein, but there are 

 only one male and two females in poor condition in the collection, 

 so that it is impossible to identif}' it accurately. 



Locality; Bright Angel, Arizona, rim of Grand Canon, 6880 

 feet, July 29 to August 2, .1906, (P. P. Calvert). 



Hylemyia sp.? 



One male, similar in appearance to the last one except that there 

 is no strong pair of presutural acrostichal bristles. The hind 

 tibiae in both of these species are rufous. 



This species has the fore and mid legs glued to the point on 

 which it is mounted, so that it is impossible to satisfactorily 

 identify it. 



Locality; Beulah, New ]\Iexico, June 28, 1902, top of range. 



Hylemyia curvipes sp. n. 



Male. — Black, densely graj' pruinose. Head black, frons, face, orbits, 

 and cheeks with silvery pruinescence; antennae and palpi black. Thorax 

 with three or five brown vittae. Abdomen with a black dorso-central stripe 

 and the anterior margin of each segment narrowly black; hypopygium glossy 

 black. Legs black. Wings clear, veins black. Calyptra white. Halteres 

 dull yellow. 



Eyes separated by a little more than width of anterior ocellus; parafacial 

 in profile over half as wide as third antennal joint, width of the latter over 

 half as great as height of cheek, marginal bristles of cheek in a single series 

 anteriorly where they are upwardly curved; face vertical or almost so, one to 

 two short hairs above vibrissa. Three pairs of presutural acrostichals present; 

 prealar bristle less than half as long as the bristle behind it. Abdomen de- 

 pressed, narrow; fifth sternite with a few, long, backwardly directed bristles 

 on disc, each process rounded at apex, slightly chitinous, glossy, and with a 

 stout, blunt, downwardly directed spine near apex on ventral surface. Legs 

 slender, the hind femora very much curved; fore tibia with one to three pos- 

 tero-ventral bristles; mid femur with six to eight long bristles on basal half 

 of postero-ventral surface; mid tibia with one antero-dorsal, two to three 



