CEYLON BUTTERFLIES. 135 
158. TERIAS ROTUNDALIS, M.—Occasionally plentiful in 
forests in the wettest zone, but rare elsewhere. Mr. Mackwood, 
who is by far the greatest authority on our butterflies, has 
always insisted on its claim to specific rank. See PI. 2, figs. 
7 and 8. 
At the first glance the upper side of the 3 is very like a 
variety of silhetana, but its rounded wings distinguish it. On 
the under side of the fore wing there is only one very dark 
streak in the basal half of the cell. It answers nearly to 
Bingham’s description of andersoni, but in the specimens I 
have examined the inner margin of the black border of the 
fore wing is very rarely angulated on vein 7, and the ground 
colour of the under side is not noticeably paler than that of 
the upper. Moore’s figures of the under side, and of what he 
calls the female, are fair. That of the male is, I believe, that 
of a variety of silhetana. The female resembles the male in 
the shape and markings of the fore wing, but is paler in colour. 
The border of the hind wing is a very fine black line, widening 
out into slightly diffuse triangular spots at the end of each 
vein. This border is sufficient to distinguish the female from 
any other Ceylon Trias. 
The reddish apical patch below is wanting, its place being 
sometimes taken by an indistinct patch of black scales. 
Judging from my specimens, this species varies less than any 
Terias in Ceylon. 
Evans writes : “ sari is recorded from Southern India and 
Ceylon ; the only specimens in the British Museum marked 
as such are two from Ceylon, which may be andersoni, but are 
certainly not sari.” It would be interesting to see if these 
are rotundalis. 
Pending a decision as to whether this is andersont, or a race 
thereof, I retain Moore’s name. 
I have taken it at Wellawaya and Buttala in the low- 
country of Uva, and have specimens from Kandy, but it is 
apparently only plentiful at Ratnapura and in other very 
wet forests. 
159. IxtAs crncGALENsis, M.; Iavias pyrene cingalensis, FE. ; 
Txias pyrene var. cingalensis, B.—Moore also gives pirenassi, 
under which name he describes the dry season form, 
