424 WEST VIRGINIA EXPERIMENT STATION. 



All of these species show a decided preference for the living 

 bark of diseased, dying, and felled trees in which to excavate 

 their galleries and deposit eggs. Yet they may be all classed 

 as dangerous secondary destructive species; since they are 

 ever ready to complete the destruction of coniferious trees com- 

 menced by other insects, or prevent the recovery of trees injured 

 by storms, disease or other causes. 



It was my intention to include in this report brief accounts 

 of the history and habits of each of the principal pine infesting 

 Scolytids and other insects which infest the pine and spruce of 

 West Virginia, but since the report has about reached the 

 limit of pages alotted to it, I will close it with an appendix giv- 

 ing a list of the species, with brief notes on habits and distribu- 

 tion, which list is intended more for the entomologist than 

 the general reader. 



