THE PARASITES OF POPILLIA JAPONICA 
45 
In this locality one complete generation occurs each year, there being 
no evidence of larvae going over a second season; in fact, all reach 
the third instar by mid-September of the year in which the eggs are laid. 
At Koiwai (lat. 39.5° N., altitude 1,500 feet), a small village 
about 10 miles from Morioka and 300 miles north of Yokohama, the 
