THE AMERICAN SILK-WORMS 271 



botany than some people do, for it makes no mistake in distinguish- 

 ing a conmpoimd leaf from a simple one. WTien it uses a leaflet 

 of hickory for its cocoon, it fastens the leaflet to the mid stem 

 of the leaf and then fastens the stem to the twig. 



Tlie pupa. — The male pupa is much more slender than that of 

 the female. The moths do not issue until May or Jtme. 



Promethea moth, male 



The moth. — The moth works its way out through the valve at 

 the top of the cocoon. The female is a large, reddish-brown moth 

 with markings resembUng somewhat those of the cecropia. The 

 male is very different in appearance, as its front wings have very 

 graceful, prolonged tips, and both wings are almost black bor- 

 dered with ash color. The promethea moths differ somewhat in 

 habit from the other silk-worm moths in that they fly during the 

 late afternoon as well as at night. 



Angulipera Moth {Catlosatnia angulifera) 



This is very much like the promethea in appearance except 

 that the white markings of the wings are much more angular 

 in shape, and the males and females are nearly alike in form and 



