THE HOLLY BLUE 
255 
ground colour is a pale greenish-buff with all markings rich 
rose-colour, and cream-yellow sub-dorsal and lateral lines; 
(3) Entirely of a clear light green, without any pink markings, 
but with a light yellow lateral line. The larva attains full 
growth after the third moult and when twenty-five days old. 
After it has taken its last food, it turns a dull purplish-pink, 
and then becomes very restless, sometimes wandering about 
for two days before spinning up for pupation. Larvae from 
the first brood feed chiefly on the unripe green Holly berries, 
into which they bore, making small round holes. The second 
brood larvae that feed 
upon Ivy devour the buds 
and young berries, leaving 
only the stalks and cups of 
the buds. The larval stage 
lasts twenty-six days. 
Pupa. The pupa aver¬ 
ages 8 mm. in length and 
is of a stout, dumpy shape. 
The head is rounded ; the 
thorax swollen ; the ab¬ 
domen rounded and 
curved to the anal seg¬ 
ment, which is rounded 
and blunt; the wings are 
ample and swollen. To 
the naked eye the pupa 
looks smooth and rather ^ rr „ 
glossy, but under the Sketched from life, 
microscope it presents a finely reticulated surface, and is 
seen to be sprinkled all over (except for the wings) with 
minute warts bearing fine amber brown bristles. The anal 
segment is encircled with club-like cremastral hooks. On the 
seventh abdominal segment, the larval honey-gland is repre¬ 
sented by three incised scars. The ground colour is tawny-buff 
inclining to pinkish ; the wings are slightly ochreous. It is 
checkered with olive-brown and a dorsal blackish streak runs 
the entire length ; the thorax is blotched with deeper brown. 
The markings generally have a burnt purplish-black appear¬ 
ance. The pupa is attached to the surface of a leaf or other 
