THE CANADIAN ENT0MO1.0GIST. 33 



SOME BEES FROM WESTERN CANADA. 



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



I am indebted to Dr. C. Gordon Hewitt for the loan of a small 

 •collection of bees obtained by Mr. T. N. Willing, of Regina, Saskatche- 

 wan. Although the number of species is not large, several are new to the 

 Canadian fauna, or otherwise of interest. It is in this region that the arid 

 transition zone enters Canada, and consequently, any one who will collect 

 •diligently ther^ is sure to find a considerable number of species not 

 ■otherrs'ise known as Canadian. I have omitted from the list three species 

 of Afidrena, two from Regina and one from Mortlach. I do not recognize 

 these at once, and it may be that some or all are new, but it does not seem 

 worth while to spend time on them until Mr. Viereck's paper on the genus 

 •has been published. 



Colletes salUicola geranii QXW. — i (^ , Pincher, Alta., July to, 1904. 



Halictus lerotcxii ruboriim Ckll. — % , Mortlach, Sask., May 31. 



Halictus trizo7iatus Cress. — $ , Mortlach, May 31. 



Agapostemon texatuis Cress. — $ , Mortlach, May 31, 1909. 



Aiidrena cockerelli Gr^en. — 9 1 Lipton, Sask., June 5, 1907. 



Halictoides ??iaurus Cress. — $ , Kinistino, Sask., July 26, 1907. 



Coelioxys ribis Ckll. — ^ , Prince Albert, Sask., July 27, 1907. Like 

 the male of C. ribis kincaidi^ but hair a purer white, and scutellum 

 subangulate in middle, with the lateral teeth short as in ribis $ . 



Osmia novo7Jiexicana Ckll.— Medicine Hat, Alta.^ one 9 > May 30, 

 1904. 



Anthidium tenuiflorcB Ckll. — $ , Radisson, July 29, 1907 ; $, , Suks- 

 town, July 18, 1909. 



Megachile calogaster Ckll. — 9, Meota, Sask., July 8, 1906; 9» 

 Swarthmore, July 15, 1910; (^ , Macleod, July 2, 1904. 



Megachile manifesta Cress. — ^, Davidson, Aug. 21, 1907. 



Megachile ( Sayaphis) pug?iata Say. — ^, Radisson, July 29. 



Megachile (Anthemois) in/ragilis Cress. — ^, Regina, July 11, 1909. 

 A form v/ith the light hair yellowish-white. Anterior coxae with no spines. 



Megachile relativa Cress. — Four 9 's, three from Regina, Aug. 24, 

 Sept. 4 and 7, one from Davidson, Aug. 21. Peculiar for having the hair 

 on last dorsal abdominal segment partly or mainly black instead of orange. 



Megachile latimanus Say. — 9 > Regina, Aug. 15. 



Melissodes confusa Cress.- — Males from Meota, Sask., July 8;Macleod) 

 July 8 ; Radisson, July 29 ; Prince Albert, July 28. 



January, 1911 



