42 C. H. TYLER TOWNSEND. 



Guanajuato, Mexico (A. Duges). Two nudes; abdomen of a 

 pale bronzy purplish color. 



Baja California (Cal. Acad. Sci. ). Numerous specimens from 

 San Jose del Cabo, and other localities. 



San Francisco Mt., Arizona. This species was found fr(im the 

 base to the summit, July 15. It was most numerous at base on a 

 large yellow composite ; was found on same flower in spruce zone 

 (see Merriam's definition of zones); on beds of low yellow flowers 

 below summit, and last of all on the bare volcanic rocks of the sum- 

 mit itself Ten specimens (two taken by Mr. Cordley), four females 

 and six males. These are all var. riolacea Say (formerly known as 

 mexicana Mcq.), distinguished by the strong purplish reflections 

 instead of brownish color. It is recorded from California, Arizona, 

 Texas, Florida, Mexico (Mcc^.) and New Granada (^Mcq.). 



30. Volueella evecta Walker, var. mmin.inen Willistou. 



Dixie Lauding, Va. (near Washington, D. C. ), May 25 ; one male. 

 Length 14 mm. Frontal triangle yellow pilose, eyes black pilose. 

 Third abdominal segment wholly black pilose ; the fourtii shining 

 bluish black, and wholly orange pilose, except narrowly black pilose 

 on hind border and continued on hypopygium. The brown sjjot of 

 wings is streaked with hyaline. 



31. "Volucella facialis Williston. 



Fort Collins, Colorado (Gillette). One male I refer here. The 

 pile of dorsum of thorax is black, but that of pleurae, sides of thorax, 

 and all of scutellum is yellow. The pile of abdomen also is wholly 

 yellow, that of third segment having a tinge of reddish. The third 

 segment bears a pair of large, quite distinct yellowish brown spots, 

 concolorous with posterior margin of second segment ; extra hyaline 

 portions of wing brownish yellow, darker opposite termination of 

 auxiliary vein ; otherwise agrees with Williston's descrijjtions. 

 Length 13 mm. 



.32. Volucella fax n. sp. 



Leui^tli 11.5 mm. — Comes nearest to V. nvidn O. Sack. Differs as follows: 

 Arista thickly plumose above, and a little on apex below, frontal triangle of 

 male shining black, thinly black pilose ; face straight below antennte. Thorax 

 shining black, lateral borders and scutellum pale honey-yellow ; i)ile of thorax 

 more yellowish, of scutellum more blackish; second abdominal segment with 

 the black posterior margin narrow, but that of third segment very wide ; narrow 

 black hind border of second segment does not reach sides of abdomen, but becomes 

 obsolete at outer fourth or fifth of width of segment. The yellow of second and 



