REPORTS BY THE HONORARY SCIENTISTS. 155 



too late to have ripened their sexual organs before the winter's 

 hibernation. Later on these will be joined by other beetles, 

 which will issue in the summer. Thus eggs, young larva;, fuller 

 grown larvse, puppe, young beetles and old beetles, may all be got 

 at the same time. 



Preventive and Remedial Measures. — Destroy the breeding- 

 places, if possible, by removal of stumps after felling. When it 

 is possible (and often it will not be) to grub up these they can 

 first be left for a time to serve as traps for egg-laying, so that 

 when grubbed up for destruction they will contain the brood. 



Sometimes pieces of fresh pine or spruce are laid a little below 

 the surface in marked places. Hylobius visits these and uses 

 them for egg-laying. 



A clean area may be protected by a steep-sided, narrow trench 

 10 to 12 inches deep. The beetles tumble into the trench, where 

 they can be destroyed or collected from branches which have 

 been strewed about the trench. 



An excellent plan for trapping is to lay here and there, in in- 

 fested places, pieces of freshly-stripped pine or spruce bark with 

 the under surface downwards. These traps must be regularly 

 visited and the " catch " destroyed ; the beetles "collect on the 

 under surface. I have caught hundreds of pine weevils thus. 



Wherever traps are used, or generally in proceeding against 

 Hylobius, it should never be forgotten that it is of the utmost 

 importance to proceed against the pest in its breeding-places, 

 and not wait till the beetles have started to feed on the young 

 plants. Traps here and there among the young growth are of 

 course not without value, but the beetles trapped or collected in 

 such circumstances will have done some harm, and, moreover, 

 will be such as are likely to have already proceeded to reproduc- 

 tion, and to have accomplished some of their egg-laying. 



From the life-history of Hylobius, seeing that stumps are the 

 favourite breeding-places, and young plants the food of the adults, 

 the forester will appreciate the importance of avoiding, as far as 

 possible, a practice which would mean the having side by side 

 recently felled and newly planted areas. 



Among other interesting specimens received, I may mention 

 a number of the galls of Retinia resinella from Colonel Bailey ; 

 as also, from Mr John D. Crozier, Durris, some spruce cones show- 

 ing attack by the caterpillars of the tiny moth, Phycis abietella. 



