394 AMERICAN GRAPE CULTURE. 



The caterpillar of the Procris Americana is 

 also a pest, but less formidable than the pre- 

 ceding, since it is gregarious; the whole nest 

 keep together, feeding along side by side. It 

 first consumes the surface of the leaf. It is 

 yellow, with black tufts along its back. 



The caterpillar of the Selandria vitis, a spe- 

 cies of saw-fly, is also gregarious, feeding in 

 rows on the under side of the leaf. It is light 

 green, with a black head and tail. Both these 

 kinds of caterpillars should be looked for early ; 

 being in schools, they are easily killed. They 

 may be found in July and August. Better 

 still, look for the eggs on the under side of the 

 leaf, and destroy them. 



The leaves of the vine will sometimes be seen 

 rolled up. This is done by one of the leaf -roll- 

 ers, a lively little green caterpillar, which, on 

 being disturbed, will speedily roll itself out 

 and fall down, suspended by a fine web. They 

 may be crushed in the leaf. 



Early in the season, when the young shoots 

 have grown an inch or so, the young leaves will 

 be found drawn together so as to seriously in- 

 terfere with the upward growth. If the leaves 

 be drawn carefully apart, there will be found a 

 small, brownish -yellow caterpillar, covered with 



