Chilo simplex, But), 
The plate shows a young maize plant on which eggs were laid and the young cater- 
pillars bored down into the plant through the heart-leaf. One-half of the blade 
of the heart-leaf was destroyed and the leaf broke down when it issued out of 
the plant. 
Figs. 1 and 2 show eggmasses on leaf (natural size and magnified) ; 
Fig. 3, a young larva (much enlarged) ; 
Figs. 4, 5 and 6, the grown-up larve, the first inside the affected stem and the other 
two drawn enlarged. 
Figs. 7 and 8, show pup, inside the stem and enlarged 3 
Figs. 9, 10, 11 and 12, show the moths in resting and flying attitudes. 
Figures in outline show the natural sizes, 
