THE CANADIAN ENTOMOLOGIST. 2.1 



THE BEE FAUNA OF CALGARY, ALBERTA. 



BV T. D. A. COCKERELL, UNIVERSITY OF COLORADO. 



I am indebted to Mr. F. H. Wolley Dod for a small but interesting 

 collection of bees, which he obtained this year at Calgary. While there 

 is nothing new to science, the collection is worth recording on account of 

 the light it throws on the bee fauna of that region. The fauna is a com- 

 posite one, with elements which seem to have been derived from different 

 directions. It may be roughly divided into groups as follows : 



1. Alaskan type. 



Botiibui Jiavifroiis difuidiatus, Ashm. — Three females, June 15-21. 

 The connection of this insect with Jlavi/rons was discovered by Mr. 

 Franklin, who will give full particulars in his forthcoming monograph. 



2. Pacific Coast type. 



Bombus Calif ornicus^ Cresson. — Four females, June 14-20, one at 

 flowers of purple columbine in garden. These show variable indications 

 of pale hair on the scutellum, and are thus transitional to the Rocky 

 Mountain B. dubius. 



3. Types characteristic of the North eastern Slates. 



Bombus consiinilis, Cresson. — One female, July 14. 



Bombus ierrico/a, Kirby. — Two females, June 2 and July 14. 

 Originally described from 65" n. lat. 



Halictus Provancheri, D. T., and Halidtis albipenjiis, Rob. — Females 

 of each, June 14. 



4. Types characteristic of the Rocky Mountains, though some are more 



widely distributed. 



Psithyrus insularis, Smith. — Goes west to Vancouver Island. 



Bombus bi/arius, Cresson. — Five females, May 25, at bearberry. 

 Very finely coloured specimens. 



B. Edwardsii Cooky i, Morrill. — One female. May 27, at bearberry. 

 The relationship to Edwardsii was made out by Mr. Franklin, though I 

 believe he does not employ the varietal name. 



B. Jlavi/rons, Cresson. — Six females, June 13 to 21. One at purple 

 columbine in garden. 



B. Nevadefisis, Cresson. — Two females, June 22. 



B. ru/ocinctus phacelia, Ckll. — One female, June 15. 



B. ru/ocinctus astragali^ Ckll. — One female, June 14. 



January, 1910 



