THE INSECT RECORD FOR I9OO 1 9 



middle of which they remain until full grown. Many of them 

 at this time seem to care less for concealment than thev did 

 earlier, as their cottony coverings are more open. 



When the caterpillar finally becomes full grown it spins 

 a mass of silk against the upper part of its cell, in which 



Fig. 9. — Hunter's Butterfly and Empty Chrysalis. 



it entangles its hind legs and lets itself hang downward. 

 In a short time it wriggles off its caterpillar skin, chang- 

 ing to the chrysalis which thus hangs in the cell where it 

 remains unchanged for about a fortnight. Then the chrysalis 

 skin splits open and the butterfly drops out and catches hold 

 of the mass of leaves and blossoms with its legs, the body and 

 undeveloped wings hanging downward. In the course of the 

 next half hour the wings expand until they are full size, the 

 front pair being enclosed by the hind pair. Before long the 

 unused muscles acquire more strength, and the newly-fledged 

 butterfly walks up to the top of the flowers where it rests 



