218 INSTRUMENTS USED IN COLLECTING, &C. 



on which the caterpillar feeds, as larvae feed almost 

 unremittingly, consuming many times their own 

 weight of leaves every day. 



BRASS PLIARS. 



This instrument is indispensable in picking up 

 small insects, as by using them the entomologist is 

 less likely to remove the scaly powder from the 

 wings. 



A DIGGER. 



This instrument is made of steel or iron, some- 

 what about six inches in length, and fixed into a . 

 wooden handle. It is used for collecting the pupre 

 of lepidopterous insects, which lie concealed at the 

 roots of trees and bottoms of hedges. It is also used- 

 for stripping off the bark from trees, where the larvae 

 of many rare insects are to be found; it ought to be 

 aiTOw-pointed. 



