102 THE CANADIAN ENTOMOLOGIST. 



shown in the figure of a deep brown. The hind wings are pink with a 

 dark shade across the middle, a few still darker spots below, and with the 

 hind margin widely bordered with gray. 



The caterpillar (fig. 5) is a formidable looking creature, measuring 

 when full grown, if at rest, about three inches, but when in motion three 



a 



Fig. 5. 



and a half inches. They feed singly, and hence, when young, do not 

 attract much notice, but as they mature they consume enormous quantities 

 of food, so that a single specimen will in a short time render long branches 

 of the vine entirely leafless. This larva varies much in color ; when 

 young it is usually green, with a long, slender, reddish horn rising from 

 the last segment but one, and curving backward, but after each moult this 

 horn gradually lessens in size until, as it approaches maturity, it disappears 

 entirely, its place being occupied by a polished tubercle. When full 

 grown the general color is sometimes green, but more frequently a pale 

 straw or reddish-brown, deepening in color at the sides, and finally merg- 

 ing into a rich brown ; there is also a broken line of brown along the 

 back, and another unbroken, with its upper edge fading gradually along 

 each side. It has six scalloped, cream-colored spots on each side, and 

 the body is covered more or less with minute spots, which are dark on the 

 back, but light and annulated at the sides. There are also from six to 

 eight transverse wrinkles on all but the thoracic and caudal segments. 

 The head, anterior segments and spiracles incline to flesh color, the pro- 

 legs and caudal plate deep brown. The largest segment in the body of 

 the larva is the third behind the head, and into this, when at rest, is usually 

 withdrawn the head and two anterior segments as shown in the figure. 



When full grown and about to transform to a chrysalis, the color of the 

 caterpillar often changes to that of a beautiful pink or crimson. It then 

 descends to the ground and burrows underneath, and there undergoes its 

 transformation to the pupa state within a smooth cavity. 



