I40 ENTOMOLOGICAL NEWS. [May, '05 



Arctophila flagrans O. S. 



Four specimens, three males and one female, of this beauti- 

 ful insect were taken at a spring in the mountains. The 

 specimens were all taken one noon and no more were seen 

 during the rest of our stay there. The spring is situated 

 high up above the canon of the Big Popo Agie River at an 

 altitude of 7,200 feet and issues from the side of Prospect 

 Peak. The insects captured were shy and diflficult to take. 

 This species has been reported from Colorado, New Mexico 

 and British Columbia (Osburn). 



Baccha lemur O. S. 



One specimen taken in August on flowers of the Cleome 

 integrifolia with other small Diptera and Hymenoptera. Osten 

 Sacken records this species from California, Nevada, Fort 

 Bridger, Wyoming and N. Mex. (Western Diptera, p. 334). 



Gatabomba pyrastri. 



Two specimens of this species were taken hovering in the 

 air under juniper trees, at an altitude of 6,000 feet, during 

 July, near L,ander. 



Eristalis bronsi Will. 



Two male and four female specimens agree very well with 

 the descriptions and with specimens in the Kansas University 

 collection. In one of the males the mid-dorsal band of the 

 abdomen occupies rather less than a third of the second seg- 

 ment, while in the other male specimen the band occupies 

 more than a third. In the latter specimen the sides of the 

 band are not straight but rather strongly curved. All of the 

 females lack entirely the opaque spots on the third and fourth 

 segments. The female specimens differ also considerably in 

 size from specimens collected in Colorado. The Wyoming speci- 

 mens measure 14 mm. and the Colorado ones less than 11 mm. 



Eristalis hirtns Loew. 



Five males and four females of this species show scarcely 

 any variation except in one case, that of a rather diminutive 

 female, which lacks entirely the yellow of the second segment. 

 This species is very closely related to E. laiifrons, but may 

 readily be distinguished by the plumose arista in E. hirtus 

 and the bare arista in E. latifrons. 



