INSECTS. 



287 



larvjne in due course pupate, and then emerge from the 

 galls as winged females or wingless males, and a second 

 batch of eggs is laid. 



Eemedibs. — Cutting off and burning the galls in summer 

 is the only remedy. 



Willow Beetle (Phratora vitelhnea?).— This beetle 



V5 



GIANT SIREX OH WOOD WASP (SIREX GIGAS). 

 (Both natural size.) 



feeds on the leaves of willows and poplars, eating holes 

 therein. It is about one-sixth of an inch long, bronzy- 

 green in colour, .and more or less oval in shape. Eggs 

 are laid in patches invariably on the under sides of the 



