FOREST LIFE. 



19s 



upper end of the cocoon there is a conical, valve- 

 like arrangement, which allows the adult to emerge 

 without the necessity of making a hole through 

 the cocoon. Cut one of your cocoons in two cross- 

 wise so as to see this valve. 



The Cecropia-MOTH, Samia cecropia {Sa'mua ce- 

 cro'pi-d). — This is the largest of our giant silkworm 



Fig. 159. — The Cecropia-moth. 



moths, the wings expanding from five to six inches 

 and a half. It can be recognized by Fig. 159. The 

 larva is known to feed on at least fifty species of 

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