260 



PINE. 



about in summer, and ^YOukl gradually wash off without 

 harming the surface to which it was applied. 



For general purposes, the only reasonably practical way of 

 preventing spread of Sirex-infestation appears to be as 

 previously mentioned, timely removal of infested timber, 

 whether in the form of standing or felled trees, or fallen trees, 

 or infested limbs. 



Pine Weevil. Ilijluhius ah'wtis, Linn. 



1, Pine Weevil, magnified : line showing nat. length (snout included) ; 

 2, 3, Larch twigs injured by weevils; 4, head, with snout and horn and fore 

 leg, magnified. 



The Pine Weevil is injurious to Scotch Fir, Spruce, Larch, 

 and some others of the Conifers?, by feeding on the tender 

 bark of the young shoots. It mainly attacks young trees, 

 especially plantations formed on ground from which a crop of 

 old Fir has recently been removed, and eats away the bark of 

 the stems, sometimes completely stripping them upwards. 

 It also eats the bark of the shoots, and destroys the bud ; and, 

 in the Larch, it gnaws at the base of the leaves so as to 

 render the shoots bare. 



The beetles appear early in the summer, sometimes in 

 May, but chiefly in June and July. In unfavourable weather 

 they remain under shelter of the leafage, but when it is warm 

 and sunny they are more active, and pairing then takes 

 place. 



The females deposit their eggs, which are transparent and 

 whitish, in rifts of the bark, in logs, root-stocks, stumps of 

 felled trees, and on exposed parts of roots. 



The maggot hatches in two or three weeks, and may be 

 found from June onwards throughout the winter. When full 

 grown it is about half an inch long, fleshy and white, with 

 a brown head, which, as well as some portions of the maggot, 



