52 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



Another male from Paradise Valley (Mt. Rainier 5500 ft.), 

 July 28, 1919, collected by C. L. Fox, in author's collection. 



This species is near aiiricaudata Will, and aurinota Hine, but 

 the wholly black legs and pile distinguish it. 



2. Xylota bivittata, new species 



In size, general appearance, and abdominal markings similar to analis. 

 Legs without spur on hind coxae. Antennse lighter in color, third segment 

 yellow, arista black, longer than with analis. Face brown, light yellowish 

 brown on lower half, pile white; contour of face similar to analis, more 

 deeply concave in profile, oral margin more pronounced. 



Thorax with a pair of indistinct longitudinal vittse not reaching the 

 scutellum. Pile of thorax shorter, more golden than in analis, crossband 

 of black evident only in certain lights. Opaque black of second and third 

 abdominal segments narrower, margined with brown ; yellow areas larger, 

 quadrate, more as in stcbfasciata. 



Legs without spur on hind coxae, color markings similar to analis, the 

 lighter areas more extended and honey-yellow ; front and middle tibiae 

 except for brown ring, all tarsi except apical segments, honey-yellow. 

 Wings similar to analis, apical cross-vein curved backward for a shorter 

 distance and less abruptly ; halteres honey-yellow. 



Type, male (No. 735), in Museum of California Academy 

 of Sciences, Huntington Lake, California, July 21, 1919; E. P. 

 Van Duzee, collector. 



Paratype, male, in author's collection. 



Superficial characters throughout very similar to analis, 

 abdominal markings resemble sitbfasciata. Light brown face, 

 light antennae and absence of spur serve to differentiate it, and 

 minor characters are specific. 



