124 THE BOOK OF BRITISH BUTTERFLIES. 



brownish, and the claspers pale green, with a pinkish 

 circle round them near the body. The back and sides 

 of the caterpillar are sprinkled over with yellow warts. 

 There is a lateral yellowish spot on each segment, and 

 a whitish line below the spiracles, which are white. The 

 divisions between the segments of the body are distinct. 



When full-fed the larva suspends itself to a layer of 

 silk that it has already deposited on the midrib of a leaf. 

 After hanging for a day or two it changes into the very 

 singularly-shaped pupa shown in Fig. 127. It is very 

 angular indeed, the wing-cases project a great deal, and 

 the thorax bears in the centre a projecting keel. But 

 what most imparts the singular appearance to the larva, 

 is the large flat projection on the back behind the thorax. 



The processes on the head of the larva are reproduced 

 in the pupa. The anterior part of the body is dark 

 brownish-green, adorned with metallic stripes and spots ; 

 the horns on the head are brown, and so is the posterior 

 part of the body, except the dorsal surface of the 

 abdomen, which is bright green. 



The wings of the perfect insect (Fig. 129) are scalloped, 

 and the costal and hind margins of the fore-wings are 

 nearly straight. The upper surface is dark smoky-brown. 

 The fringe is white, except at the extremities of the 

 nervures. There is a band of about fifteen bluish-white 

 spots stretching across each pair of wings from the costal 

 margin of the fore-wings to the inner margin of the hind 

 ones. There are also four other white spots on the 

 fore-wings. The chief beauty of the insect, however, is 

 to be found on the under-surface (Fig. 128), where the 

 white spots are reproduced with a few additions to their 

 number ; but the ground-colour is a rich sienna-brown, 

 tinged here and there with a darker brown, and bearing 

 a number of black dots and bars. The base and inner 



