CHEYSALIDS. 



17 



the outer skin gradually hardens it forms a safe case 

 for the fly forming, in its pupa state, within. But 

 whether as a Beetle grub, or a Fly maggot, or a Moth 

 caterpillar, they, as a rule, seek or make use of some 

 kind of shelter ; and if we know what and where this 

 is, we can do much to lessen the great numbers of 

 crop insects which otherwise are sure to collect where 

 their food is to be found. 



CHAPTER 11. 



CHRYSALIS— PERFECT INSECT— ORDEES. 



Fig. 15. — 1, Corn Ground Beetle ; 2 and S, grub, nat. siy^e and mag- 

 nified ; 4, burrow of grub ; 5, chrysalis. 



In the preceding Chapter some amount of general 

 description is given of the early conditions of insect 

 life up to the stage when the maggot, or grub, or 

 caterpillar (or larva, to use the term which includes the 

 first stage of life of all insects), having completed this 

 first feeding period of its life, throws off its skin once 



