294 



FOREST ENTOMOLOGY. 



Cherme.s pice,e (Rtzb.) 



The bark - louse of the silver fir {die Tannenrinclenlaus of the 

 German) is very destructive to young silver firs, comparatively young 

 specimens of AJdes Norchnanniana, and even fairly old trees of Ahies 

 nohiliK. Y\" 279 is taken from the bark on a silver fir tree of aVxnit 



Fig. 277. — Terminal shoot of Scots pine 

 killed hy Chermes pini. 



thirty years of age. Specimens of young silver fir trees in nursery- 

 lines are often killed outright by this insect. It is considered that 

 the last three species have no intermediate host. 



It is to be hoped that the above account of the genus Cherme.^ will 

 show that they are of very great importance from an entomological 

 point of view, and that much subsequent study is required in order 



