Insecis, etc., Injurious to the Plum. 



375 



deposit fresli eggs which give rise to kw\-a:', and Irom tliese a, third 

 brood may and frei^uently does appear in Se].tembei' and Or.tolier. 



-PIAM LKAF SAW'KJA' (C/riilil 



The last brood are frequently, liki' the slugworni of the pear, the 

 most noticeable. This autumn brood of larva- fall to the ground 

 and remain in their silken cases until the following April or May 

 in the larval condition, when they 

 then pupate. 



Natueat, Enemies. 



Two parasites were reared from 

 this sawfly by Cameron, namely, 

 Ichnrntcs rciniitor, Xees, and Ti-i/- 

 lihon Incidnlns, Xees, both of which 

 attack the larva\ 



i'EEVENTION AND IlEiMEDlES. 



The ground beneath trees, which 

 have been infested, should be well 

 prong-hoed in the spring and well 

 trodden down afterwards. It would 

 bo better to remove a couple of 

 inches of surface soil during the 

 winter, burn it and replace it later 

 where a tree here and there has 

 lieen attacked, whicli, needless to 

 say, could not ]je done on a large 

 scale. 



