264 CULTURE OF THE CRAPE. 



disappear, and go into the chrysalis state three or four 

 inches deep in the ground, and re-appear in the beautiful 

 moth-form in the latter part of June following. Hand- 

 picking, or syringing with tobacco-water, is a remedy, 

 whenever they are so numerous as to be troublesome. 

 Among a group of caterpillars called Glaucopidians is one 



which produces the moth Procris Americana, representing 



/ 



the Procris vitis of Europe. This caterpillar is above half 

 an inch in length when fully grown, is of a yellow color, 

 with a transverse row of black, velvety tufts on each 

 ring, and a few conspicuous hairs on each extremity. 

 It is hatched from eggs, twenty or more in number, 

 laid on the lower side of the leaves early in July. 

 These caterpillars are gregarious, collecting side by side, 

 and eating every particle of the leaf except the ribs. 

 They have sixteen short feet, are rather sluggish in 

 their motions, and, when touched, curl their bodies side- 

 wise, and fall to the ground, or hang by a silken 

 thread. They continue for about a month, disappear- 

 ing in the latter part of August, and, in some shel- 

 tered spot, enclose themselves in a thin, tough, ob- 

 long-oval cocoon, and soon are transformed into shining 

 brown chrysalides, producing the moth in the latter part 

 of June following. It is evident, that, when numerous, 



