Bui. 51, Bureau of Entomology, U. S. Dept. of Agriculture. 



Plate IV. 



Fig. 14, Pupal cell broken open, exposing pupa within, enlarged to three diameters; figs. 15, 16, 

 side and ventral views of pupa, enlarged to four diameters (original). 



Fig. 17, Four pupal cells from bolls (on left) compared with four cotton seeds (on right)— 

 natural size (original). 



