DUKE OF BURGUNDY FRITILLARY 
197 
is found to be covered with a very fine network of reddish 
reticulations, chiefly of hexagonal patterns, and close to the 
base are a number of perpendicular ribs with knobbed apices. 
The colour is a translucent greenish-yellow-pearl-white. The 
egg state lasts fourteen days. Upon hatching, the little larva 
eats away the entire crown of the egg and emerges. 
Larva. When fully grown, after the 
third moult, the larva is 15 9 mm. 
long. It is rather stout in proportion 
to its length, and tapers at each end ; 
the back is arched. It is covered with 
dark brown and light ochreous bristles, 
chiefly arranged in clusters, and others 
form a lateral projecting fringe, which 
is composed of four brown bristles, and 
a dense cluster of whitish bristles on 
each segment; along the side is a 
series of oblique drab-coloured mark¬ 
ings. The whole surface is densely 
clothed with very fine wavy white 
hairs. The head is light amber colour 
and covered with hairs ; the body is 
pale buff with a dark purplish-drab 
line down the back enclosing a black 
spot in the centre of each segment. 
The larval stage lasts forty-three days. 
The larva is very sluggish in its habits, 
often resting for hours at a time, 
mostly in a straight attitude on the 
under surface of the leaf of its food 
plant, either the Primrose or Cowslip. 
Pupa. The pupa is n mm. long ; 
in form it is stout and rounded. The 
head is rounded ; the thorax swollen ; the waist slightly 
sunken ; the abdomen swollen and rounded and strongly 
curved to the anal segment, which is furnished with long 
cremastral hooks. 
The ventral surface is flat and straight. The colouring is 
pale creamy-ochreous tinged with flesh colour over the head 
and wings. The dorsal surface is dotted with black, chiefly 
Duke of Burgundy Fritillary. 
Segment of larva just after 
hatching. 
