THE BUTTERFLIES OF CEYLON 63 
It is a very local fly, and only found in the dry zone. It is 
very abundant at times on the bund of Tissamaharama tank, 
and on the sand dunes at Kirinda, in the Hambantota district. 
Also on the bund of Murunkan Tank, near Mannar. It is 
fairly common at Kankesanturai, on the North Coast, and 
at Fort Frederick, Trincomalie. It flies slowly close to the 
eround and settles frequently on flowers, so is easy to catch. 
108. SYNTARUCUS PLINIUS. 
Also found in Africa, India, Burma, Malaya and Australia. 
It is very plentiful at Haldummulla, and I have taken it 
in every month but December. Its range extends from sea 
level to over 6,000 feet. I have taken it at Jaffna, Mannar, 
Vavuniya, and Hambantota, but not in the wet zone. 
They are fond of flying round plants of Indigofera anil, 
which is apparently the chief food plant at Haldummulla, 
and the males frequently settle on wet roads. 
109. CASTALIUS ROSIMON. Alsoin India, Burma, Malaya, etc. 
Very plentiful all over the low-country of Ceylon, but 
becomes rarer above 3,000 feet. It is commonest at Haldum- 
mulla in the dry season, June-August. 
I have noticed it all over the low-country, from Galle to 
Jaffna. It prefers open country, and especially roadsides ; 
flies slowly, and is very easy to catch. It settles in numbers 
on wet patches on the roads. 
It varies a great deal in the amount of black on the upper 
surface, but the variation does not seem to depend much on 
climate. Several of my lightest-marked specimens are from 
Galle (wet zone), and my two darkest are from Haldummulla 
(medium) and Jaffna (dry zone). 
110. CASTALIUS ETHION. Alsoin India, Burma, Malaya, etc. 
Much more a jungle fly than the last and is fond of settling 
on a twig or leaf projecting over a jungle path. 
Is found nearly all the year round at Haldummulla, but 
is usually commonest in April and May. 
It is common in the south of the Island, especially in the 
wetter districts, and I have taken it up to 5,000 feet elevation 
