CEYLON BUTTERFLIES. Ww L 
184. CHILASA LANKESWARA, M. ; Papiliolankeswara, DeN. ; 
Papilio clytia lankeswara, B. ; Chilasa clytia, with var. lankes- 
wara and dimorph dissimilis, E.—Moore gives dissimilis and 
clytioides as separate species. 
I think it is certain that there is only one species in Ceylon, 
but I do not feel competent to express an opinion as to whether 
it is a variety of clytia, as given by Evans ; a race, as given by 
Bingham ; or a sub-species, as given by De Niceville. All 
the later writers agree that dissimilis is only a dimorph. 
Rothschild says that lankeswara “differs from P. ciytia 
in the umber brown colour of the wings, and in the small sub- 
marginal spots of the fore wings . . . . This sub-species 
has been described from slightly aberrant specimens, in which 
the sub-marginal spots of the fore wings are partly obliterated ; 
in most individuals the series of these spots 1s complete, and on 
such specimens Moore’s clytioides is based.” 
I have only a rather poor series, but they vary much in the 
number and size of these spots and of the discal sagittate spots 
on the hind wing. The umber brown colour seems constant. 
C. lankeswara is a mimic of the Hupleas, and it is curious 
that these, in Ceylon, differ from their corresponding Indian 
species in the same way that lankeswara differs from clytia. 
The form dissimilis mimics D. limniace and aglea, and is said 
to agree with Indian specimens. It varies greatly in size and 
the amount of the white markings. In both forms the females 
can be distinguished by their broader and more rounded fore 
wings. 
It has as rapid a flight as any Papilio in Ceylon, but does not 
always make use of its powers. When visiting flowers, or 
hovering over wet patches on the roads, its flight is slow, and 
so like that of a Danais or Euplea, that after thirty years’ 
experience I am still sometimes deceived by it. I imagine 
that protection is most needed by the female when laying 
her eggs ; she would then probably be hovering slowly over 
the cinnamon, &c., and her mimicry would be most advan- 
tageously displayed. The pupa is a most wonderful example 
of camouflage. Itis fixed to a branch so as to exactly resemble 
the end of a broken twig, and I have found it difficult to 
distinguish even in a breeding cage. 
