igS 



NATURE-STUDY 



Fig. 58. Chrysalis of Milk- 

 weed Butteriiy — Greer 

 and Gold. 



malion of the chrysalis, and (lie emergence from it. Observe 



the way the calcrpiUar cuts away the edge of a leaf. See 

 how its jaws work. Observe the way 

 the butterfly uses his wings in flight and 

 rest. Note how the wings are held up 

 over the back and folded together when 

 at rest. Place some flowers or a dish of 

 sweetened water in the cage, and see 

 how the insect uses its long proboscis or 

 sucking tube. What does it do with 

 the tube when not in use ? 



The butterfly passes through four dis- 

 tinct stages: the egg, the larva or cater- 

 jiillar, the chrysalis or i)U])a, and the 



imago or the adult. This kind of growth is called indirect de- 

 velopment or, perhaps better, complete 



metamorphism. Compjare \\ ith the locust. 



Other insects besides the butterflies have 



this kind of development, where the difi^er- 



ent stages are strikingly dilTerent from each 



other, such as the fly, beetle, bee, and ant, 



for example. 



Moths and butterflies belong to the order 



of Lepidoptera (Scale-winged), so called 



because of the colored scales on the wings. 



These scales are arranged hke the shingles 



on a roof. The fitie mealy substance that 



rubs off on the fingers when a moth or 



butterfly is handled consists of these scales. 

 Moths are chiefly nocturnal insects, and 



Fig. 5q. Milkweed or 

 Monarch Bulterfly 

 Just Out of Chrysalis. 



may be distin- 

 guished from the butterflies by the fact that thev hold their 



