DISEASES AND INSECTS. 393 



that live on the vine have been placed in a 

 group by Harris, and called Pliilampelus, or 

 lovers of the vine. Fig. 157 is the larva of 

 one of these, of the natural size. Killing by 

 hand is the only remedy. 



Fig. 15T. 



The bluish brown caterpillar of the Eudryas 

 grata, which appears early in July, is a great 

 pest in some localities. It not only consumes 

 the entire foliage, but eats off the bunches of 

 fruit. They are so small at first as scarcely to 

 be seen, but grow fast. Lime and sulphur, as 

 well as a solution of whale-oil soap, or the 

 Gishurst compound, will destroy them ; but it 

 is difficult to make solutions reach them, and 

 hand-picking is tedious, as they conceal them- 

 selves on the under side of the leaf. Birds are 

 very fond of them ; hence in the cities, where 

 there are no birds, these caterpillars make sad 

 work with the vine. The lime and sulphur 

 remedy may drive them off, but we have not 

 tried it. 



