Bui. 123, Bureau of Entomology, U. S. Dept. of Agriculture. 
Plate VIII. 
Fig. 1 .— Sugar-Beet Wireworms in Petri Dish, Killed by Bacteria in 
Cultures of Agar. (Original.) 
Fig. 2. -a Root Cage Used in Rearing Young Wireworms. (Original.) 
