44. SPOLIA ZEYLANICA. 
Microscopical examination-of the scales of the male has 
proved parrhasius to be distinct from argiades. 
Exceedingly plentiful all the year round at Haldummulla. 
Common at Galle and all over the southern half of the Island 
up to 6,000 feet at least. I have no records of its capture in 
the North. 
The male varies little, except in size; the female varies 
greatly, the ground colour being sometimes brown without a 
sign of blue, and at others pale grayish-blue with brown border 
at the apex and termen of the fore wing, and along the costa 
of the hind wing. 
Nacapusa.—This is one of the most difficult families to 
name, and apparently the more specimens one examines, 
the greater the difficulty becomes. During the last five or six 
years I have caught and examined many hundreds of specimens, 
and I now feel less competent to name them than ever. 
As a guide of sorts, I annex a table, mainly taken from 
Bingham :— 
Key to Forms of Ceylon Nacaduba. 
A.—Under side fore wing: basal area unmarked by white 
strigee : 
al.—White strigee very broad and diffuse = macropthalma. 
b1.— White strigee narrow, never ditfuse = pavana. 
B.—White strigz on basal area : 
a2.—Fore wing : apex very acute = viola. 
62.—Fore wing : apex not very acute : 
a3.—Basal strige not extended to vein 1 : 
a4.—Under side hind wing: small black spot in tornal 
angle, and larger one in interspace 2 = noreia. 
64.—Under side hind wing: small black spot in tornal 
angle, and equally small one in interspace 2 = dana. 
63.—Basal strige extended to vein 1: 
a5.—Expanse under 25 mm. = ardates, tailed and tailless. 
65.—Expanse over 25 mm.: 
a6.—¢ upper side : brownish-purple = atrata. 
bh6.—3 upper side: darker brownish-purple suffused 
with plumbeous = plumbeomicans. 
