THE DOUGLAS FIR CHERMES. 1 73 



and while a few facts and suggestions on it are given the 

 forester will regret that further work in this direction was not 

 possible. 



The appendices to the Bulletin, while perhaps too technical 

 to appeal to the majority of the forestry public, cannot fail 

 to be useful to those who are engaged in or contemplate 

 further study of this group. The illustrated keys to the 

 identification of the species of the larch and Douglas fir 

 chermes, based on the work of Borner and Cholodkovsky, 

 provide for the first time a means of identifying our British 

 species in all their stages, and are in themselves a most useful 

 contribution to our entomological literature. The Bulletin, as 

 a whole, definitely extends our knowledge of the Chermesidae, 

 especially in their role as forest pests, and forms an important 

 basis for further work. 



In conclusion, a word must be said for Mr Fraser Story's 

 share in the preparation of the Bulletin for publication. It is 

 largely owing to his assistance in this respect that the study 

 of a difficult and highly technical problem appears in a form 

 which should appeal not only to the entomologist but also 

 to the practical silviculturist. J. W. M. 



