Bui. 5 1 , Bureau of Entomology, U. S. Dept. of Agriculture. 



Plate I. 



Stages of Mexican Cotton Boll Weevil. 



Fig 1 Cotton boll weevil, back view of adult; fig. 2, .side view of adult; fig. 3, egg; fig. 4, 

 side view of larva; fig. 5, ventral view of pupa; lig. 6, adult, with wings spread— all 

 except fig. 3 enlarged to four diameters; fig. 3 enlarged to twelve diameters (original). 



