146 SPOLIA ZEYLANICA. 
Var. ceylonica is very Common in the low-country of Uva 
and at Anuradhapura, but becomes scarcer further north. I 
have seen single specimens at Galle and Nuwara Eliya. It is 
not rare at Ohiya during the flights. Var. spiculifera is much 
rarer, and I have only seen it above 4,000 feet. 
PAPILIONINA. 
176. ORNITHOPTERA DARSIUS, M. & E.; Papilio darsius, 
B. ; Troides darsius, De N.—Peculiar to Ceylon. 
It differs from Indian species in having the yellow area on 
the lower wing more restricted. It varies to a certain extent 
in this respect, but all my specimens of both sexes have the 
apex of the cell yellow. One male in the Colombo Museum 
collection has the whole cell black, but I believe this variety 
is very rare. In a few cases the male has black spots in the 
yellow interspaces. One of mine has four of these spots, one 
each in interspaces 2, 3, 5, and 6, and the yellow in 7 is 
exceptionally smali, the reduction being apparently caused 
by a spot coalescing with the basal black area. I have two 
others with a spot in interspace 2, and the Colombo Museum 
has one with spots in 2 and 3. This variety has been named 
cambyses ; it is far from common. 
It flies all the year round at Haldummulla, and is apparently 
common everywhere up to 6,000 feet elevation at least, except 
in the Northern Province, the furthest north that I have taken 
it being at Puliyankulam resthouse. It usually flies very high, 
but frequently visits flowers, and it is then easy to catch. 
177. MenevaipEes HECTOR, M. & E.; Papilio hector, B. & 
De N.—Also found in India. 
It is very plentiful all over the low-country, but especially 
so in the drier districts. Single specimens visit the hills all the 
year round, but their flight is usually fast and straight, and 
they seldom settle. In the low-country they fly, as a rule, 
close to the ground, visiting flowers, and are very easy to catch. 
In November, 1914, I saw a fair number far out to sea, off the 
Indian and Ceylon coasts, several of which came on board the 
ship. At Kankesanturai, on the north coast, I have often 
noticed its gregarious habits when roosting for the night, a 
dozen or more settling on a single palmyra leaf. 
