LOCUSTS, BUTTEKKLIES, BEES, WASPS 169 



these there hatch tiny green caterpillars. They eat raven- 

 ously, and grow very fast, shedding their hardened skins 

 from time to time so that their bodies ma}' stretch and 

 become larger. In a few weeks the caterpillars become 

 mature. Each one then passes through a great change 

 and becomes transformed into 

 a quiescent l^ody kno\vn as a _ 

 pu-pa. The pupa is encased Band- 

 in a hard, shiny covering and 

 the whole is called a chrysalis. 

 The chrysalids of some butter- 



_. , .. ,, , , Fig. lOS. — Pupa of butterfly. 



Hies are Deautiiull}^ spangled 



with gold and silver spots, but the chrysalis of the cabl)age 

 butterfly is modest in coloring. It is suspended from the 

 cabbage leaf by the tail and b}' a loose band about the 

 middle (Fig. 108). The pupa lies cjuietly, eats nothing, 

 and at the end of about ten or twelve days splits open 

 do^^^l the back and the adult butterfly craN^ds out, dries its 

 wings in the sun, and in a httle while fUes away in quest 

 of somethiag to eat. 



