LYCANIDA. ARHOPALA. 265 
know where the geographical line dividing the two species will come, as a specimen from 
the Chittagong Hill Tracts is certainly typical 4. exmolphus ; while from Mergui and Tavoy, 
which are a little south of this, 4. farguhari is found. Another differential character not 
mentioned by Mr. Doherty, but exhibited by the five specimens of A. /farguhari before me, 
is that the outer black border on the upperside of the forewing in the latter species is half as 
wide as is usually found in A. eumolphus. 
A description of 4. maxwelli, Distant, will be found below.* It is probably the female of 
A. farquhari. The blue coloration on the upperside is much more extensive than in the female 
of A. eumolphus, Cramer, 
I give belowt a description of A. frogon, Distant, from the Malay Peninsula, which is a 
very distinct species allied to 4. eumolphus, Cramer, and still nearer to 4. aurea, Hewitson. 
824. Arhopala hellenore, Doherty. 
A. hellenore, Doherty, Journ. A. S. B., vol. lviii, pt. 2, p. (1889). 
HaBITaT: Mergui, Burma, 
EXPANSE: ¢@, I'9 inches. 
DESCRIPTION : ‘‘ MALE. UPPERSIDE, 60th wings with the green colour rather more tinged 
with golden thanin A. ezmolphus, Cramer, and the dark border somewhat narrower on the 
forewing, and much narrower on the hindwing, extending less than one-third towards the base 
of the first median interspace. UNDERSIDE, 40/2 wings conspicuously marked with whitish, 
* Arhopala maxwelli, Distant. Narathura maxwelli, Distant, Rhop. Malay., p. 263, n. 4, pl. xxiil, 
fig. 10, female (1885). Hasirar: Malacca. ExpaANsE: 2°o inches. Description : *‘ FemMaLeE. UpPERSIDE, 
both wings violaceous-blue. Forewing with the costal and outer margins (abruptly widened at apex) dark 
fuscous. Hindwing with the costal and outer margins dark fuscous ; abdominal margin fuscous, faz? with its apex 
greyish-white. UNbERSIDE, doth wings brownish. Forewing with the following spots and fascie margined 
with greyish :—two spots in, and one at the end of the cell; above this last is a small and obscure spot; a 
curved macular fascia between the end of the cell and the outer margin, commencing near the costa, abruptly 
dislocated at the third median nervule, from which it is continued by three fused spots, the uppermost small- 
est ; two spots beneath the cell divided by the first median nervule, and a submarginal waved fascia. Hindwing 
with seven basal spots; two transverse, waved, discal fasciz dislocated and fused from the second subcostal 
nervule to the costal nervure, a waved submarginal fascia as on the forewing, and three metallic greenish spots, 
more or less shaded with black near the anal angle. Body above and beneath, with /egs, more or less concolo- 
rous with the wings.” (D7stanzt, |.c.) 
Mr. Distant (1. c., p. 463) describes the female of his Arhofala farguhari as green on the upperside like 
the male. In this I am sure he is wrong, and think it very probable that the true female of A. fargu/hari is 
the species now under discussion, a close comparison of the figure of the underside of A. maxwelli and speci- 
mens of A. farguhari disclosing no differences of any moment. I have not seen a specimen of A. mazxwedli. 
t Arhopala trogon, Distant. Panchala trogon, Distant, Ann. and Mag. of Nat. Hist., fifth series, vol. xiv, 
p. 201 (1884) ; idem., id., Rhop. Malay., p. 275, n. 5, woodcut n. 87, male (1885); p. 464, ne 5 (1886). HABITAT? 
Perak. Expanse: Male, 1°7; female, 15 inches. Description: ‘* MALE. UPpPERSIDE, doth wings bright 
metallic emerald-green ; nervures and nervules, extreme margin of the forewing ; costal area, abdominal area, 
and posterior margin—narrowing from the apex to the third median nervule, and then broadly to the anal angle — 
of the hindwing dark chocolate-brown ; cilia and short ¢azZ of the same colour, the latter with its apex grey- 
ish. UNDERSIDE, doth wings purplish brown, the lower half of the forewing almost without the purplish 
reflections. Hosewing crossed by the following greyish lines:—two looped and macular crossing‘the cell, two 
disco-cellular at the end of the cell (the innermost continued to the first median nervule), two discal, waved 
and fractured, commencing near the costa and terminating at the first median nervule, and two submarginal, 
which are narrow and somewhat obsolete ; from the base of the first median nervule to the inner margin is 
a narrow greyish line, from which to the outer angle the colour is greyish, and before which is a small greyish 
spot. AHzndwing darker purplish, the basal area beneath the median nervure clothed with long brownish 
hairs, and with the following greyish lines :—four macular, arranged in transverse basal series, followed:by three 
macular, situated one above and one within the cell, and one irregular inshape beneath the cell ; these are 
followed by about four, much waved and fractured, crossing the disc of the wing, anda waved marginal line 
from apex to second median nervule, where there are three blackish spots, much covered with metallic greenish 
scales and outwardly bordered with greyish, extending to the ana] angle. Body above brownish, beneath and 
Zegs somewhat paler. FEMALE. UppeErsIpDE, doth wings violaceous-blue. Morewing with the whole costal area 
above the cell, the apex very broadly and irregularly —almost approaching the apex of the cell, which has a%disco- 
cellular spot —and the outer margin also broadly blackish. AHixdwing blackish, with the disc violaceous blue. 
UNDERSIDE, bcth wings as inthe male.” 
“This species is allied toboth the VW. [=4.] farguhavz, Distant, and the P. [=A.] aurea, Hewitson (a 
Bornean species), by the metallic emerald-green colour above : it is, however, very distinct from both, not 
only by the different markings beneath, but also by the much smaller brownish markings on the upperside 
of the wings.” (Distant, 1. c. in Rhop. Malay.) 
In th.s case Mr. Distant admits that the green male Avhofala can have a purple female. and I have no doubt 
that this is invariably the case. The type male specimen of this very beautiful and distinct species is in the Indian 
Museum, Calcutta. Itisa narrower-winged insect than A. exmolshus, the green colour of the upperside is more 
brassy, andin the forewing extends quite up to the margins, leaving a black marginal thread only. The 
markings of the underside are quite different in the two species, the discal band of the forewing in A. f¢rogon 
being unbroken; the tai! also is quite short and tooth-like, 
34 
