98 
COCOONS, BUT NOT OF SILK. 
not wish to have the mischief it is doing found 
out, it weaves a thick mass all round the stem, of 
silk and fragments of hark together, thus fortify¬ 
ing its dwelling, and at the same time concealing 
it. Beneath this mass, which looks like an ex¬ 
crescence, the caterpillar makes a winding pas¬ 
sage, where it lies hidden while it gnaws. But 
liepialus lignivora moth, and nest. 
