Sept,i902.] COQUILLETT : NeW OrTHORRHAPHOUS DIPTERA. 139 



and face black, tomentum of the two latter black mixed with yellowish, proboscis not 

 projecting beyond the oral margin ; mesonotum thinly grayish pruinose, its hairs chiefly 

 black, those at the ends and sides, also on upper edge of pleura pale yellow, on re- 

 mainder of pleura and on breast black ; hairs of abdomen pale yellowish mixed with 

 black ones on the sides and dorsum of the last two segments ; tomentum of abdomen 

 black, that on the last segment white, hairs and tomentum of venter black ; front 

 tibice bearing a few bristles, front tarsal claws well developed, pulvilli wanting ; wings 

 hyaline, the base brown, the outline of this color extending from apex of auxiliary 

 vein obliquely to first submarginal cell near its base, then transversely to discal cell, 

 then obliquely nearly to base of this cell, then curving through base of fourth posterior 

 cell and obliquely through anal cell and upper basal angle of the axillary cell ; 

 cross-veins within the brown area not bordered with subhyaline ; length, 9 to il mm. 



Habitat : Sierra Madre, Chihuahua, Mexico (head of Rio Pedras 

 Verdas, altitude about 7,300 feet). 



Type: Cat. No. 6312, U. S. N. M. 

 Fourteen specimens collected August 11 to 29. 



Family Asilid.e. 

 Saropogon dispar, sp. nov. 



Male. — Black, the halteres yellow, femora with a reddish-yellow vitta on the 

 front side connected at the apex with a shorter one on the posterior side, hairs and 

 bristles whitish or pale yellow, the short bristly hairs of mesonotum largely black, 

 the hairs of abdomen and of last two pairs of tibise largely black ; head, thorax and 

 upper side of scutellum densely yellowish-gray pruinose, mesonotum marked with 

 three blackish vittse, the median one divided by a gray line ; abdomen tmged with 

 blue, the sides of the first segment and hind angles of the following three gray prui- 

 nose ; wings brown, darkest along the costa and at the apex. 



Female. — Antennse and legs reddish-yellow, a black vitta on upper side of all 

 femora and also on under side of the middle and hind ones, short bristly hairs of 

 mesonotum and hairs of tibiae yellow, wings smoky, the costal cell brownish-yellow, 

 apex of wings blackish, otherwise as in the male ; length, 20-23 "^^• 



Habitat : Cuero (June 6), and Columbus (E. A. Schwarz), Texas. 

 Type : Cat. No. 6313, U. S. N. M. 

 Seven males and seven females. 



Pycnopogon divisus, sp. nov. 



Male. — Black, the knob of the halteres yellow ; hairs of occiput pale yellowish, 

 a transverse row of black bristles on the upper part, hairs of front pale yellow, those 

 next the eyes black, hairs of middle of face sparse, pale yellow, those on the sides 

 and the very dense fringe above the mouth black ; thorax somewhat polished, its 

 hairs and those of the scutellum pale yellow ; abdpmen polished, the broad bases of 

 segments two to six opaque, hairs of dorsum very short, sparse, depressed, black, 

 those of the sides and venter very long, dense, yellow ; hairs of femora yellow, many 

 black ones at apices of the front and hind ones and a fringe of black ones on the 

 upper and under sides of the apical third of the middle femora ; hairs and bristles of 



