522 CALIFORNIA ACADEMY OF SCIENCES. 



and femora, rest of legs pale yellowish, with black bris- 

 tles, abdomen marked with brown and yellowish in the 

 usual pattern, pruinose beneath; antennas much shorter 

 than wings, yellowish, tips of joints fuscous, club pale 

 brownish ; pterostigma of fore wings cream white, of hind 

 wings more fuscous; a curved dark cloud below pteros- 

 tigma of hind wings in some specimens. Venation like 

 U. hyalina. 



Several specimens from San Jose del Cabo, September, 

 and Sierra El Taste, Baja California. Differs from U. 

 hyalina principally in the shorter antennae and light col- 

 ored pterostigma. 



