Bui. 436, U. S. Dept. of Agriculture. 
Plate 
Fig. 1.— Laboratory Cages Used in Life-History Work on the Desert Corn 
Flea-Beetle. (Original.) 
Fig. 2.— Field Cages Used in Life-History Work on the Desert Corn 
Flea-Beetle. (Original.) 
Fig. 3.— Johnson Grass Along a Neglected Fence Row and Ditch Bank. 
A Deplorable Condition Favoring Insect Development and Affording 
a Place for Insects to Hibernate. (Original.) 
THE DESERT CORN FLEA-BEETLE (CHAETOCNEMA ECTYPA). 
