54 



EMPEROR MOTH. 



douMe, a loose outer envelope enclosing an innei 

 cocoon made of stilfer hans. The ends of these 

 haiis converge over the opening, so that the Moth, 

 when it shakes off the pupal skin, can easily creep 

 out, while no other insect can creep in. The 



Emperor Moth— Cocoon. 



structure of the cocoon is shown in the accom- 

 panying illustration. The larva of the Emperor 

 Moth may generally he found upon the heath. 

 The form of the antennas is shown in cut G, 

 fig. 2, page 21. 



