Bui. 491 , U. S. Dept. of Agriculture. 



Plate XVI 



Work of Larv/e of Melon Fly in Young Pumpkin. 



Cross section of two young pumpkin fruits. In these the larvae of the melon fly have reached full 

 growth, and have left by the only opening to the exterior, which is also, in both instances shown, the 

 point of original infestation. (Original.; 



