EXPLANATION OF PLATE XXXV. 



Fig. 1. Adult flea-beetlo, iJrepidodera (Epitrix) cucumeria 

 Harr. 



Fig. 2. One of the front pair of legs of the same. 



Fig. 3. One of the hind pair of legs, showing the powerful 

 femur (thigh) which enables the beetle to execute its character- 

 istic jumping movements. 



Fig. 4. The larva (grub). 



Fig. 5. A photomicrograph of a larva feeding on a potato root. 



Note. — Figures 1 to 4 are drawn to the same scale by means 

 of the camera lucida, the magnification being approximately 

 nineteen diameters; but the larva from which the drawing was 

 made was only about three-fourths grown. The full-grown larvae 

 measure about 4 millimeters. 



The hair lines by figures 1 and 4 represent the actual size of the 

 objects. 



All figures were made by Mr. F. A. Sirrine, , 



