Jul. 1066, U. S. Dept. of Agriculture. 



Plate IV. 



The Black-Walnut Cuhculio. 



ii<- beetle i i g chamber in roung black walnut 6 ■■■■ i lai 



ciing pupal cell in tl ■ ■ tun alnut; /, pupa; g, egg punctures 



Mill . 



