Bui. 539, U. S. Dept. of Agriculture. 
Plate II. 
Feeding Tubes and Cocoons of the Lesser Corn Stalk-Borer. 
Tigs. 1, 2. — Feeding tubes attached at entrance to tunnels, at base of sorghum stalks. Fig. 3.— 
Cocoon opened, showing pupa in situ. Fig. 4.— Cocoons, with and without exit tubes. (Orig- 
inal.) 
