Number 71 August 29, 1Q19 



OCCASIONAL PAPERS OF THE MUSEUM OF 

 ZOOLOGY 



UNIVERSITY OF MICHIGAN 



Ann Arbor, Michigan Published by the University 



ON SOME HEMIPTERA FROM WESTERN CANADA 

 By H. M. ParshlEy 



Investigation of the origin and present distribution of the 

 hemipterous fauna of northern America has been greatly im- 

 peded by the meagreness of collections from the Northwest, 

 for a knowledge of the species occurring in this region is of 

 vital importance in connection with the inviting hypothesis 

 of migration hither from northeastern Asia. A step toward 

 filling this need is made in the present paper, which is based 

 on my study of a considerable collection of Heteroptera from 

 Alberta and British Columbia, and some light is thrown on the 

 general questions involved, although the list of species falls 

 far short of completeness. 



The collections have come to my hands through the good 

 offices of my friend John D. Tothill, of the Entomological 

 Laboratory at Fredericton, N. B., who in his travels through 

 the Dominion has not omitted to start in my direction such 

 hemipterous materials as he meets with in nature or in cab- 

 inets ; and through the kindness of Frederick M. Gaige, of the 



