THE MAZARINE BLUE 
241 
■VvO^ 
• * c i f-'rrr 
-s. 
hibernating and produced a fine male imago on June 7th, 
both the larva and pupa were pale in colour. The larval 
stage lasts between 270 and 280 days. The larvae-spun up 
on different parts of the plants. In each case a very slight 
cocoon of a few strands of silk was formed, and each larva 
was also attached by the hind claspers to a pad of silk, as 
well as being secured by a cincture round the waist. 
Pupa. The average length of the pupa is 10*50 mm. The 
head is rounded ; the thorax is convex ; the abdomen is 
slightly swollen and curves to the rounded anal segment; 
the ventral surface forms almost a straight line, in which 
formation it mainly differs from the 
pupa of M. avion. The colour is a pale 
ochreous-green, the wings being palest 
and inclining to whitish. The pupa is 
covered with very fine brown reticula¬ 
tions and is sprinkled with minute 
lenticles. The honey-gland of the 
larva is replaced by a slight suture 
with a brown central spot. It is 
attached by the cremastral hooks and 
a cinture round the waist, also by a 
few silk strands around it. The pupal 
period is about seventeen days. 
Imago. The sexual difference is 
very distinct. The wings average in 
expanse 36 mm. 
Male. (Upper Side.) Dull purple blue; both fore and 
hind wings are narrowly margined with bronze-black ; at 
the end of the discoidal cell is a fine black mark and the 
neuration is outlined with black. The fringes on the outer 
half are white, on the inner half, black. The eyes are clothed 
with very short hairs. ( Under Side.) This is a pale greyish- 
drab blending into pale silvery-blue over the base of the 
wings. There is a white-edged black discoidal mark in both 
fore and hind wings. A transverse series of six white-ringed 
black spots crosses the fore wing, and there is a series of eight 
on the hind wing, also one below the costa and a faint sub¬ 
marginal series of brownish spots. 
Female . (Upper Side.) Brown shot with lilac-bronze; 
Abdominal spiracle of the 
pupa of the Mazarine Blue 
(magnified) . 
B.B. 
0 
