34 



INTRODUCTION TO ZOOLOGY. 



5. The material of which the cocoon is composed 

 is silk. Silk originates as a liquid in some glands in 

 the caterpillar, which open near the maxillse. It is 

 drawn out in a fine thread which hardens when ex- 

 posed to the air. 



6. Study the chrysalis. Note its size and shape. 

 Draw. 



7. Can you distinguish body divisions? Abdom- 

 inal segments? Spiracles? Wings? Antennae? 

 Sucking tube? 



8. Perhaps in the cocoon you can find the cast-off 

 skin of the catei'pillar. 



9. The chrysalis is the pupa of a butterfly or of a 

 moth. Butterflies do not make cocoons. 



THE MOTH. 



1. Study a moth as you did a butterfly. Note all 

 the differences you see in the antennae, size of the 

 body, position of the wings Avhen at rest. 



2. Make a table of differences between a butterfly 

 and a moth, according to the following form -.—^ 



Additional Facts. 



In the growth of a butterfly, or of a moth, there 

 are four stages : egg, caterpillar, chrysalis, and butter- 

 fly or moth. The caterpillar is called the larva ; the 

 chrysalis is called tlie pupa ; and the mature butterfly 

 or moth is called the imago. This kind of metamor- 



