LYCANIDZ. ARHOPALA. 247 
the cell, an elongated spot closing the cell, with two spots below divided by the second 
median nervule, an irregular discal catenulated band ; submarginal and marginal fascice 
more prominent than in the forewing, the anal region from the black anal lobe to the second 
median nervule irrorated with metallic blue scales) FEMALE, UpPERSIDE purplish-brown, 
Forewing with the purple area much more restricted than in the male, the disco-cellular 
nervules marked witha black tooth from the costal area. Hindwing with no purple area. 
UNDERSIDE, doth wings marked precisely as in the male, 
A. atrax shares with A. amantes, Hewitson, the peculiarity of being a plains insect, 
with its head-quarters in Orissa and Chota Nagpur, where at times it may be said to swarm. 
Mr. P. W. Mackinnon has sent me specimens from as far west as Dehra Dun, which were 
taken in April; Mr. W. H. Irvine has found it at Bholahat in the Malda district ; it occurs 
rarely in Sikkim ; Mr. A. V. Knyvett has taken it at Jalpaiguri ; it is very decidedly rare in 
Calcuttaand Barrackpore, but swarmsas stated above, in Chota Nagpur, Central Provinces, and 
Orissa. Mr. G. F. Hampson reports having taken a single specimen on the lower slopes of the 
Nilgiris. It may be best discriminated from A. a/ea, Hewitson, and A. canaraica, Moore, by the 
greyer tone of coloration on the underside, these species (especially the latter) having the 
purple washing more prominent and of a vinous shade, 
802. Arhopala aida, de N. 
4. aida, de Nicéville, Journ. Bomb. Nat, Hist. Soc. vol. iv, p. ,n. , pl. A, fig. 1, wale (1889). 
HasitaT: Burma. 
EXPANSE: 6, 1°60; 9, 1°45 inches. 
DESCRIPTION: “ MALE. UPPERSIDE, doth wings shining bluish-purple of exactly the 
same tint as in A. se/fa, Hewitson, and 4. raflesii, mihi. Forewing with the outer margin broadly 
black (a little broader thanin A. se/éa). Hindwing with the outer black margin even, as broad as 
in the forewing ; the costa more broadly black. UNDERSIDE, both wings purplish-brown, strongly 
glossed with purple. all the markings prominent, a little darker than the ground-colour, outwardly 
narrowly and clearly defined with whitish. /orewing with the inner margin broadly paler ; an 
oval spot near the base of the cell ; an oblong one at its middle, with a costal spot above it; a 
quadrate spot closing the cell, also with a costal spot above it ; a discal macular band dislocated 
below the third median nervule, the fourth spot nearer the margin, the two spots which follow 
further removed from the margin, a large quadrate spot in continuation in the submedian inter- 
space ; a pair of submarginal fascize, but more prominent than usual. //izdwing with the usual 
basal annular spots, a spot closing the cell, a discal band formed of spots arranged more or less 
in pairs, the usual marginal lunular fascize, the small anal lobe black, a small black spot 
in the first median interspace on the margin, the space between this spot and the anal angle 
sprinkled with metallic-green scales. FEMALE. UPPERSIDE, oth wings of a lighter more bluish 
shade than in the male, the outer margins much broader ; otherwise as in the male.” 
“ Described from a single male (the type) captured by Major C. T. Bingham on the Pegu 
Yoma, Burma, in December, 1887, and two males and a female captured by Mr. W. Doherty 
at Mergui and in the Tenasserim Valley in the cold season of 1888-89. One of these males 
differs slightly from the type in having all the markings of the uncerside rather larger and 
darker, consequently they are more prominent.” (de Micéville, 1. c.) 
Below will be found a description of 4. adatha, Hewitson, from Malacca and Singapore.* 
What I take to be the typical form of this species (figs. 29 and 30) is rather larger than A. aida 
* Arhopala adatha, Hewitson, Amblypodia adatha, Hewitson, Cat. Lycenide B. M., pl. iv. figs. 29. 30, 
male (1852); id., Butler, Trans. Linn. Soc Lond., Zoology, second series, vol. i, p. 548, n. 4 (1877); Nara- 
thura adatha, Distant, Rhop. Malay., p. 265, n. 6, pl. xxiii, figs. 1, wale; 2, female (1883). eee : Malacca, 
Singapore (Distant); Borneo (Butler). Exeanse : Male and female, 1°6 to 1°7 inches (Distant). ESCRIPTION : 
“ Marte. Uppersipe, doth wings dark violaceous-blue (a specimen received from Singapore has the colour above 
darker blue and less violaceous than in the figures here given, which are taken from Malaccan sreaers in the 
British Museum). Hindwing, apex of tail greyish-white. UNDERSIDR, doth wings brownish, with the following 
spots and fascia margined with greyish :— Forewing with two spots in, and one at the end of the cell, two spot 
