Bui. 344, U. S. Dep 



t. of Agriculture. PLATE II. 



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Fig. 1.— Caged Thurberia Plants Infested with Weevils. (Original.) 



Fig. 2.— Cages Over Cotton Plants Used in Studies on Weevil Activity. 



(Original.) 



TYPES OF REARING CAGES SIMULATING NATURAL CONDITIONS, 

 USED IN STUDIES ON THE BIOLOGY OF THE ARiZONA WILD 

 COTTON WEEVIL. 



