6 University of Michigan 



for most of the conventional materials of such research. 

 Many species of Hemiptera exhibit such naturally occurring 

 varieties, e. g., Lygaeiis kahnii, Stirctnis anchorago, Pcrillns 

 exaptus, etc., and some are well adapted for rearing in confine- 

 ment, wherefore I would suggest that they present a promis- 

 ing field for the student having inclination and facilities for 

 protracted experimental breeding. It should be emphasized, 

 however, that much can be done by the study of extensive 

 series of these varieties collected and preserved with our newly 

 developed care for minuteness in recording data, as is strik- 

 ingly illustrated in Bateson's "Problems of Genetics," a work 

 full of suggestion for taxonomist and genetic experimentalist 

 alike. 



In his Catalogue of the North American Hemiptera, \'an 

 Duzee records 87 species of lleteroptera from Alberta and 

 British Columbia, a large majority of these records referring 

 to \^ancouver Island. The present report enumerates 144 

 species from these Provinces, of which 96 are recorded for the 

 first time. The figures given in the following table emphasize 

 the fragmentary nature of our present knowledge of distri- 

 bution and suggest opportunities open to those who are so 

 situated that they can make carefully annotated collections in 

 the many regions of the continent not yet fully explored en- 

 tomologically. 



Summary of XiDiicrical Data 



