506 THE VINE PYRALIS. 



Several methods have been proposed to destroy 

 them, among which was this : to collect the leaves 

 upon which the eggs were deposited. But the method 

 which is generally practised is that discovered by 

 M. Raclet. Early in the spring, before the cater- 

 pillars have come forth from the bark, the whole 

 trunk of the vine is washed with hot water. This 

 effectually destroys them, and is found to be far 

 from injurious to the vine, provided it is done after 

 severe frosty weather is past ( Westwood). 



(6) Procris Amerciana. When in the caterpillar 

 state, these attack the leaves of the grape-vine, con- 

 suming all except the framework. The eggs are 

 laid in groups of about twenty, and the worms live 

 together. They are yellow, with black tufts on 

 each segment of the body. The eggs are laid upon 

 the under surface of the leaves. The moth depos- 

 its them during the first part of July (Harris). 



(7) Haltica chali/hea — Illiger. This is a beetle, 

 attacking the leaves and buds. It is, as its name 

 indicates, generally blue, but not always. It is 

 about one-seventh of an inch long. Two broods 

 make their appearance each year : one in May, and 

 the other the last of July. The eggs are deposited 

 upon the surface of the leaf, and the larva con- 

 sumes the interior soft part. Whenever this min- 

 ing of the foliage is observed, the leaf should be 

 plucked and burned. When they abound, if the 

 foliage is sprinkled with lime, or with soap-suds, 



