LYCANID. IRAOTA, 217 
traced. It will be observed that Mr. Moore describes the colouring of both sexes on the 
upperside as the same. As far as my experience goes, this is not usually the case. I possess 
a single female only from Bangalore which has the rich metallic blue so characteristic of the 
male, All the numerous specimens I possess of that sex from other localities have the upper- 
side shining (but not metallic) purple, and, instead of the hindwing being almost entirely of 
that colour,as in the Bangalore female, there is a small and obscure irrorated patch on the 
disc only. As this diversity in coloration occurs also in Z. ¢imoleon, I assume that the 
females of at any rate two species in this genus are dimorphic ; if this were not the case it 
would be necessary to describe two new species to which I should be unable to assign corres- 
ponding males. 
I have given above every locality that I can ascertain for this species. It will be observed 
that it occurs with Z. ¢imoleon in China, the Western Himalayas, Oudh, in Sikkim, Orissa, and 
Bombay. It occurs alone in Ceylon, Bangalore, Calcutta, and Bholahat. These localities are 
not numerous, and [I shall expect to find hereafter that in them Z. ¢/moleon is found. The only 
specimen of an /raota I possess from Ceylon is exactly intermediate betweer. 4moleon and 
mecenas, and goes far to confirm my opinion that these two supposed distinct species are 
in reality but one variable species. 
I append as a foot-note a description of 7raota [Zroata] nila, Distant. * If it is an Zraola 
at all, which I very much doubt, it belongs to this group, as it has two tails only to the 
hindwing, while the females of the other group have three tails, The name zd/a has already 
been used by Kollar for a butterfly of this genus. 
777. Traota rochana, Horsfield. 
Amblypodia rochana, Horsfield, Cat. Lep. E, I. C., p. 108, n. 40 (1829); id., Horsfield and Moore, Cat. 
Lep. Mus. E. I. C., vol. i, p. 44, n. 68, pl. 1a, fig. 10, weale (1857) ; Lraota rochana, Moore, Journ. Linn. Soc, 
Lond., Zoology, vol. xxi, p. 43 (1886); Zhecla timoleon, Boisduval (ec Stoll), Sp. Gén., vol. i, pl. xxil, fig. 4, 
Female (1836). 
HApiraT : Mergui, Java. 
EXPANSE: 6, 1°41; 2, 1'60 to 1°80 inches. 
DEscRIPTION: “MALE. UPPERSIDE, doth wings black. Forewing with an oblong patch 
of deep cyaneous-blue, or reflecting in a different light a beautiful sea-green lustre. Hindwing 
with a similar large area nearly circumscribed according to the outline of the wing, deeply 
notched at the base and separated by a narrow curved border from the posterior margin. 
UNDERSIDE, doth wings dark reddish-brown, the hindwing covered witha shining bay reflexion ; 
the anal area paler and clouded, in the forewing uniformly gray, and defined in the form 
of a regular arch in the hindwing ; the surface of both wings bearing diversified marks of a 
beautiful shining silvery white, arranged in the following manner :—F/orewing with a narrow 
white line, attenuated towards the base, extends near the inner boundary of the costal area 
about one-third of the wing ; on the disc stands a very short transverse stigma ; behind this 
follows a curved interrupted band of five wedge-shaped dots, of which the intermediate one is 
* Iraota nila, Distant, Rhop. Malay., p. 462, n. 2, pl. xliv, fig. 24, female (1886). Hapiratr: Malacca. 
Expanse: Female, 1°5 inches. DESCRIPTION: ‘‘ FEMALE. UPPERSIDE, Joti wings violaceous-blue ; costal 
and outer margins of the forewing, and costal, outer and abdominal margins of the Azxdwing more or less 
brownish. UNDERSIDE, forewing pale ochraceous-brown, the area near the posterior angle greyish, the area 
beyond the discoidal cell more or less castaneous, preceded by a narrow white linear fascia extending from 
the first subcostal to the first median nervule ; this fascia is followed by a series of five white spots, and these by 
acluster of four apical spots of the same colour; two dark spots are placed beyond the lower two of the 
five white spots. Hindwing with about the upper half castaneous, the remaining area more or less ochraceous, 
shaded with castaneous, and marked with a series of white spots, most of which are shaded or margined with 
dark bluish ; these spots are thus situated :—two subcostal, four (small) subapical, four discal, four (large, and 
much margined with bluish) on abdominal margin, anda marginal series of lineate spots ; a black spot at anal 
angle, and a smaller black spot between the first and second median nervules. Body above more or less conco- 
lorous with the wings, beneath greyish. Zegs greyish, mottled and streaked with brownish.” (Déstant, 1. c.) 
This species may be an Zraoza, but I very much doubt it. As figured, the antennz are much more than half 
as long as the costa of the forewing ; the lower discoidal nervule is shewn as arising at the point of junction 
of equal middle and lower disco-cellular nervules in the forewing, a structural arrangement which is totally 
different from that seen in /yaota, in which no middle disco-cellular nervule exists; the inner tail is shorter 
than the outer, the reverse of this being the case in Jyaota;and lastly the whole coloration and markings 
of the insect appear to me abnormal. It should probably form the type of a new genus, 
28 
