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: tig. 2, tliree larvae, showing shrunken appear- 
ance just before pupation; tig. 3, larva in cocoon as made in sandy soil; fig. 4, two bollworm 
pupse— fig. 3 about natural size; tigs. 1-2 enlarged one-half; fig. 4 enlarged three times (original). 
