THE BUTTERFLIES OF CEYLON 29 
It differs from erymanthis as follows: ‘‘ Fore wing, discal 
band distinctly darker yellow, with its inner and outer margins 
much less sinuous and irregular, the black line defining 
the inner margin more slender; the spots on the band in 
interspaces I, 2, and 3 much smaller, especially the spot 
in interspace 1, which is no larger than the others, and is 
diffuse and ill-defined. The sub-apical yellow spots on the 
black area entirely wanting, or, if present, diffuse and 
indistinct ’’ (Bingham). In nearly all my specimens the 
spot in interspace 1 is far larger than those in 2 and 3 though 
not so large as in Bingham’s figure of erymanithis. 
Common wherever there is a fair rainfall. It always seems 
abundant at Watering Point, Galle, but is found at all eleva- 
tions, and apparently all the year round. I have never seen 
it north of Vavuniya. | 
It settles on bushes usually about 5 to 8 feet from the 
ground. If disturbed, it dives into the thickest growth, 
and is therefore very difficult to capture in first-class con- 
dition. 
50. CETHOSIA NIETNERI. 
Peculiar to Ceylon. It usually varies little except in 
size, but I have seen several males from Kandy, caught 
in July, August, viz., the wet season, in which the ochraceous 
patch on the upper side is almost, or quite, obsolete. 
I have records of its occurrence at Haldummulla in every 
month but January, but it is most numerous during the 
south-west monsoon. 
It is one of the easiest insects to catch, owing to its slow 
hovering flight; its wings are not so delicate as they look, 
and are seldom damaged in the net. 
Found all over the low-country from Galle to Vavuniya, 
and up to 6,000 feet (Ohiya) at least, but it seems to be most 
plentiful at a fair elevation, say 2,000 to 4,000 feet. 
51. CYNTHIA ASELA, M., De N., and B.; Cynthia erota 
asela, E.—-Peculiar to Ceylon. 
‘ s absolutely indistinguishable from the wet season form 
of C. ervota’’ (Bingham). The female differs in having the 
