Bui. 50, Bureau of Entomology, U. S. Dept. of Agriculture. 



Plate XII. 



Pupation of the Bollworm. 



Fig. 1. Full-grown larva entering soil for pupation; fig. 2, three larvse. showing shrunken appear- 

 ance just before pupation; fig. 3, larva in cocoon as made in sandy soil; fig. 4, two bollworm 

 pupae — fig. 3 about natural size; figs. 1-2 enlarged one-half; fig. 4 enlarged three times (original). 



