DOMINION OF CANADA 



DEPARTMENT OF AGRICULTURE 



ENTOMOLOGICAL BRANCH 



C. GORDON HEWITT, DOMINION ENTOMOLOGIST 



CANADIAN BARK-BEETLES 



PART II 



A PRELIMINARY CLASSIFICATION, WITH AN ACCOUNT 

 OF THE HABITS AND MEANS OF CONTROL 



BY 



J. M. SWAINE, 



Assistant Entomologist in Clmrge of Forest Insect Investigations 



BULLETIN No. 14 



{Technical Bulletin) 



Published by direction of the Hon. T. A. Crerar, Minister of Agriculture, Ottawa 



OTTAWA 



J. DE LABROQUERIE TACHE 



PRINTER TO THE KING'S MOST EXCELLENT MAJESTY 



1918 



ISSUED SEPT. 6, 1918. 



