ROOT CROPS. 



65 



quassia, ammonia, etc. On a large scale the application is 

 costly ; and although it may pay for a crop of hops, it has 

 hitherto been impracticable for roots." (2) " When the 

 turnips are attacked near maturity, the folding of sheep 

 destroys the insects, and may prevent their reappearance 

 in the following season." 



The Turnip Gall Weevil {Ceutorhynchus sulci- 

 collis, Pig. 28) belongs to a group of beetles called the 



Fig. 28. — Turnip GaiiL Weevil (Geutorhynchiis mlcicollis). 



A. Gall-like excrescences on tnrmp-bulba. 



B. A gall with grab inside (nat. size). 



C. Turnip Grail Weevil (enlarged). 



Ehynchophora, whose snouts, as a rule, are very long. 

 The antennae are placed on each side (of snout), " elbowed " 

 or angulated in the middle and clubbed at the extremity. 

 The female turnip gall weevil punctures the " roots," and 

 deposits an egg in the wound. Within this domicile the 

 yellowish-coloured larva or maggot lives, feeds, and attains 

 its maturity. This beetle (Fig 28 0) is most injurious to 



F 



