420 



THE BIOLOGY OF INSECTS 



of the New Orleans Cotton Exchange declares that ** national 

 prosperity is threatened by the ravages of this insect." 



Fig. 86 — a, Cotton Boll-weevil {Anthonomtis grandis), Mexico; b, 

 larva (side view); c, pupa (ventral view), X 5 ; d, cotton "square," 

 showing larva feeding. Natural size. From W. D. Hunter and 

 D. R. Coad (U.S. Dept. Agr. Farmers' Bull. No. 1329, 1923). 



