184 ENTOMOLOGICAL SOCIETY 



bases of tarsi and extreme apices of femora, reddish yellow. Hairs of 

 front and on upper edge of occiput black, on remainder of occiput white; 

 third joint of antennae slightly longer than the first two joints taken 

 together, greatly widening medially, two and one-third times as long as 

 the rather slender arista ; face strongly gibbous. Mesonotum gray prui- 

 nose, marked with a pair of submedian brown vittae not extending on the 

 posterior portion, and on either side with a pair of large brown spots 

 separated by the suture, hairs sparse and rather short, bristles black, 

 mesopleura and sternopleura hairy, pteropleura bare, hairs of hypopleura 

 whitish, scutellum gray pruinose on the upper surface, sparsely covered 

 with rather long black hairs most abundant around the margin, devoid of 

 stout bristles. Abdomen polished, with a bluish tinge on the first five 

 segments, a gray pruinose fascia on hind part of the first six segments, 

 that on the first and sixth broadly interrupted in the middle. Hairs of 

 coxae and femora white, bristles of tibiae and tarsi black, tarsal claws 

 whitish, their apical third black. Wings hyaline, small cross-vein near 

 one-third length of discal cell. Length 9.5 to n mm. 



Arizona. Three females collected by H. K. Morrison. 

 Type. No. 7957, U. S. National Museum. 



Cyrtopogon maculosus, n. sp. 



Near rejectus, but the wings distinctly spotted, thorax with a crest of 

 hairs, etc. Black, including the halteres. Face strongly gibbous, mystax 

 black, rather dense, mounting nearly to the antenna?; third joint of 

 antennae one and one-fourth times as long as the first two taken together, 

 gradually tapering to the apex, three times as long as the robust style; 

 hairs of front and on upper edge of occiput chiefly black, on remainder of 

 occiput whitish. Thorax with the usual brown markings, a median crest 

 of rather long black hairs, bristles black and rather slender; mesopleura 

 and sternopleura hairy, pteropleura bare, hairs of hypopleura whitish ; 

 scutellum strongly convex, yellowish gray pruinose, rather densely cov 

 ered with long white hairs and with a row of slender black bristles around 

 the margin. Abdomen polished, the lateral margins narrowly gray prui 

 nose, produced inward a short distance at the hind angles of each segment. 

 Hairs and bristles of legs chiefly whitish, tarsal claws black. Wings 

 hyaline, a distinct brown cloud on veins and cross-veins at bases of the 

 submarginal, discal and posterior cells, small cross-vein near middle of 

 discal cell. Length 10 mm. 



Pullman, Washington. A female specimen collected April 

 29, 1902, by Prof. C. V. Piper. 



Type. No. 7958, U. S. National Museum. 



Cyrtopogon varipennis, n. sp. 



Near nebulo, but the first basal cell marked with two black spots near 

 the middle, etc. Black, the halteres dull yellow. Face rather strongly 



