URACANTHUS TIMBER BORERS. 69 



preventives. When the trees have been attacked, examine 

 the branches well, and cut off every affected limb, or at 

 least a portion of it, and, as I have before mentioned, a 

 little practice will soon enable any one to locate the larvae 

 at their work. In badly affected districts, a bright lamp 

 placed inside a tent will attract numbers of these night- 

 flying insects, when the captives can either be destroyed 

 or kept for the cabinet collection. 



