The Life of the Weevil 
points of what the Pea-weevil showed us. 
Each grub digs itself a cell in the floury mass, 
while respecting the skin in the form of a pro- 
tective disk, which the adult will easily be 
able to push out at the moment of leaving. 
Towards the end of the larval phase, the 
cells show through on the surface of the bean 
asso many dark circles. At last the lid falls 
off, the insect leaves its cell and the haricot 
remains pierced with as many holes as it had 
grubs feeding on it. 
Very frugal, satisfied with a few floury 
scraps, the adults seem not at all anxious to 
abandon the heap so long as beans worth ex- 
ploiting remain. They mate in the inter- 
stices of the stack; the mothers scatter their 
eggs at random; the young grubs make them- 
selves at home, some in the untouched hari- 
cots, some in the beans that are holed but 
not yet exhausted; and the swarming is re- 
peated every five weeks throughout the sum- 
mer, after which the last generation, the one 
born in September or October, slumbers in 
its cells till the return of the warm weather. 
If ever the spoiler of the haricots became 
too ominously threatening, it would not be 
very difficult to wage a war of extermination 
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