236 



1. X SECTS INJURIOUS TO THE GRAPE. 



surface of the ground in search of more congenial quarters. 

 During the winter many of them remain torpid, and at that 

 season they assume a dull-brownish color, so like that of the 



FIG. 243. 



roots to which they are attached that they are difficult to 

 discover. They have then the appearance shown at b in Fig. 

 242. With the renewal of growth in the spring, the young 

 lice cast their coats, rapidly increase in size, and appear as 

 shown at e, /, g, in the figure ; soon they begin to deposit eggs ; 



