Bui. 50, Bureau of Entomology, U. S. Dept. of Agriculture. 



Plate XVIII. 



Predaceous Enemies of the Bollworm. 



Fig. 1, Polistes annularis, a wasp predator^r on the bollworm, and its nest, two-thirds natural size; 

 tig. 2. Lycosa riparia with captured bollworm moth, natural size: fig. 3, Beromyia angiistipennis, 

 a robber fly predatory on the bollworm moth, enlarged one-half: fig. 4, Mallophora orcina, 

 another robber fly which destroys moths, enlarged one-half; fig. 5, Metapodins femoratus, cT?, 

 known to attack bollworms, enlarged one-half (original). 



