THE CANADIAN ENTOMOLOGIST 



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of the disease are very slight, although the fibrous roots may at this time 

 be covered with the little swellings ; but if the attack is severe, the second 

 year the leaves assume a sickly yellowish cast, and the usual vigorous 

 yearly growth of cane is much reduced. Eventually the vine usually dies, 



Fig. 17. 



but before this takes place, the lice having little or no healthy tissue to 

 work on, leave the dying vine and seek for food elsewhere, either wander- 

 ing underground among the interlacing roots of adjacent vines, or crawling 

 over the surface ot the ground in search of more congenial quarters. 



