Bui. 50, Bureau of Entomology, U, S, Dept. of Agriculture. 
Plate VI. 
Variation in Color and Markings in the Bollworm. 
Fig. 1, Dark-colored bollworm resting on leaf of cotton plant; fig. 2, three larvse, seen from the 
side, showing color types — upper larva, green; middle, rose; and lower, dark-brown colored; 
fig. 3, five larvae, showing color variation, seen from above; fig. 4, dorsal pattern of markings 
of dark-brown colored larva— figs. 1-3 enlarged twice; fig. 4 four times (original). 
