Figure 2.—- A, Egg masses of the European corn "borer 
deposited on the under side of fully formed leaves. 
The egg mass on the leaflet at right is 1 to U days 
old, and the eggs on the terminal leaflet are ahout 
to hatch after 5 to 7 days of incubation. B, Egg 
mass 1 to k days old (5 times natural size). £, Eggs 
5 to 7 days old, with "black heads of emhryo larvae 
showing through eggshells (5 times natural size). 
5TATE PLANT BOAtu> 
