134 SPOLIA ZEYLANICA. 
clearly only varieties of si/hetana, and the latter is described 
as having three spots in the cell. Also found in India, Burma, 
and Malaya. 
It is as common as the last in the hills, but less plentiful in 
the low-country. I have taken it all over the southern half 
of the Island, but not so far in the north. When Albizzia 
moluccana was first planted through the tea it became a pest, 
but latterly its natural enemies have kept it fairly well in 
check. The best way to get fine specimens and varieties is 
to find an Albizzia leaf of which all the soft part has been 
eaten, and the pup are hanging about an inch apart along 
the ribs. Thirty to forty pupz may be found on one leaf, and 
a fine series of varieties will probably hatch out, as the wet 
and dry season forms fly together. These pup on Albizzia 
leaves are always black, but a few larvee sometimes descend 
and pupate on the under side of tea leaves ; these pupe are 
usually green. 
It is extremely variable, and cream-coloured specimens 
are not at all rare. With one possible exception mentioned 
below, every specimen [ have seen had three spots in the 
basal half of the cell, but Manders mentioned one in his notes 
in which the basal spot was “almost obsolete.” There is a 
variety found in the wettest forests, the male of which was 
described by Moore as rotundalis 3, probably because it is 
usually found in company with that species. It differs from 
normal silhetana in the narrower and more intense black 
borders to both wings, that on the fore wing being usually 
continued to the base of the costa, and that on the hind wing 
being clearly defined, never diffase, as usual, in silhetana, 
The reddish-brown apical patch, when present, is a narrow 
streak from the costa to vein 4, asin hecabe. There are three 
basal spots in the cell. On the lower wing below there is a 
black streak across the angle at the base of vein 8, which I 
find in all my silhetana, but never in hecabe or rotundalis. 
Mr. A. C. Hayley has given me a specimen, which I believe 
to be an aberration of si/hetana. The spots in the basal half 
of the cell have coalesced into one large irregular figure, and the 
black streak across the angle of vein 8 on the hind wing is 
wanting. 
