156 THE BOOK OF BRITISH BUTTERFLIES. 



little before hibernating. It recommences feeding in 

 early spring, and is full-fed at the beginning of June. 

 The chrysalis may be found during the same month, and 

 the imago is out during July and August. 



The larva (Fig. 168), which is of the form common to 

 this group of butterflies, is very pale brown in colour. 

 There is a medio-dorsal darker brown stripe, and the rest 

 of the dorsal surface is marked irregularly with the same 

 colour. The head, which is rough and hairy, bears three 

 faint brown stripes on each side. The skin-fold above 

 the legs and claspers is nearly white and edged with 

 hairs ; the spiracles are black. The segments are distinctly 

 divided into sections. 



The pupa (Fig. 169), which is suspended by the anal 

 extremity, has much the same ground-colour as the larva 

 pale brown. The cases of the wings and antennae are 

 nicely marked with darker brown, and the dorsal surface 

 is ornamented with spots, both large and small, of the 

 same colour. 



The imago (Figs. 170 and 171) has the costal margin 

 convex, and the hind-margin of the fore-wings slightly so ; 

 the hind-wings are scalloped, but not so distinctly as in 

 ianira. The ground-colour of the upper surface is an ex- 

 tremely uniform dark blackish-brown ; that of the under- 

 surface is brown also, but of a lighter and warmer tinge ; 

 the fringe is white. The only adornment is a series of 

 beautiful eye-spots, parallel to the hind-margin of the wings, 

 and most conspicuous on the under-surface (Fig. 171). 

 They are black, with white centres, and surrounded with a 

 very pale yellow ring. The usual number is two on the fore- 

 wings, and five on the hind ones ; but some or all may 

 be indistinct or absent. A third may often be found 

 below the other two on the fore-wings, and the second 

 one, reckoning from the costal margin on the hind-wings, 



