THE INSECT WORLD. 
162 
maker, and weaver, arranges it in such a way as to form a 
hollow cone, which it only remains for it to shut. 
Réaumur 
calls this sort of cocoon, or shell, /a cogue en bateau, the boat- 
































































SSL SSS——= 
SS SSS SS SSS 
SSS — 

inch). 
2 
= 
22, 123.—Cocoon of Pyralis corticalis (magnified, proper size 
Figs. 1 
Some caterpillars 
form with pure silk. 
shaped cocoon. 
weave cocoons of the same 
, we will mention the industry 
To bring this subject to an end 
of the Puss Moth (Dicranura vinula 
and that of a small Tinea, 
i 
The larva of the puss moth employs in the construction of its 
shell the wood of the tree on which it has lived. It bites it 
up, and mixing it with a glutinous fluid which it secretes from 
which eats the barley stored away in our granaries. 
