iureau of Entomology, U. S. Depf. of Agriculture. 



Plate IX. 



Effects of Weevil Feeding Upon Bolls. 



Fig. 36. Small boll showing 13 feeding punctures; fig. 37, section of medium-sized injured boll 

 a. Feeding puncture closed by woody growth. 6. gelatinized area resulting from feeding punc 

 tures; tig. 38, boll having two locks destroyed bv two feeding punctures made bv a male weevil 

 fig. 39, device used to test relative attractiveness of American and Egyptian squares— figs. 36 

 38, reduced to three-fourths natural diameter: fig. 39, one-fourth natural diameter (original). 



