INSECTS INJURIOUS TO TOBACCO 



231 



FIG. 164. Hibernation of southern tobacco-worm; c, pupa in hibernating 

 cell in soil, at the depth of which pupation usually takes place in the 

 stiffer soils; a, cross-section of pupal cell viewed from below; b, pupal 

 cell showing entrance hole of larva two-third natural size. (After 

 A. C. Morgan, U. S. Dept. Agr.) 



