26 
THE CATERPILLAR. 
soft membrane, covered with a slimy substance, 
that still further helps it to slide or crawl like a 
snail, for it can hardly be called walking. 
Caterpillar of Limacodes cippus. 
There is another foreign caterpillar* that does 
anything but crawl. It has legs, and makes good 
use of them, for it darts along so swiftly that it 
* Bombyx leporine. 
