426 LYCAENIDZE. BIDUANDA. 
969. Biduanda thesmla, Hewitson. (PLATE XXIX, Fic. 229 $). 
Myrina thesmia, Hewitson, Ill, Diurn, Lep., p. 32, n. 16, pl. xiv, figs. 25, 27, male; 26, female (1863) 5 
Biduanda thesmia, Distant, Rhop, Malay., p. 238, n. 1, figs. 76, male; 77, female (1884) ;id., Doherty, Journ. 
A. S. B., vol. lviii, pt. 2, p. (1889); Drupadia fabricii, Moore, Journ. A. S. B., vol. liii, pt. 2, p. 32 (1884) ; 
pana allah id., Journ. Linn. Soc. Lond., Zoology, vol. xxi, p. 42, pl. iv, figs. 2, male; 3, femal 
HasiTaT: Burma, Malay Peninsula, Nias and Daat Islands, Sumatra. 
EXPANSE: 6, 1'25 to 1603 9, 1°20 to 1'50 inches. 
DESCRIPTION : “MALE. UPPERSIDE, oth wings purple-brown. Fvorewéng with the inner 
margin curved, projecting, Mzxduwing with the outer margin and base of tke tails black; a 
submarginal line between the tails, the cz/za, and the three ¢az/s, white. UNDERSIDE, forewing 
rufous-orange, with two spots in and below the cell, a spot at the end of the cell, three 
transverse lines (the first, which is near the second, indistinct), the outer margin, and the cz/za, 
all brown. Aindwing white (the apex rufous), with eight brown spots, followed by several 
zigzag black lines; the caudal spot, the lobe, and the space between them crowned with 
silvery blue; a spot above the [anal] lobe also powdered with blue; the outer margin black ; 
the ci/ia white. FEMALE. UPPERSIDE does not differ from the male, except that it is rufous- 
brown, and has the anal angle of the Adwing grey, marked with the caudal spots.” 
“Closely allied to M@. [=Drupadia] ravindra, Horsfield, [from Java and Nias]; although 
the males are very different, the females are alike on the upperside, On the underside this species 
differs from D. vavindra chiefly in having the lower spots of the hindwing represented by 
double lines [in D. vavindra they are solid. The coloration of the ground is very different]. 
A male has a rufous spot in the middle of the forewing, as represented in the figure.” 
(Zewitson, 1, c.) 
“TJ cannot find any constant difference between Mergui [specimens of B. fabriciz, Moore] 
and Perak specimens [of B. ¢hesmia].” (Doherty, 1. c.) 
I quite agree with Mr. Doherty’s note above as regards the males from Burma and the 
Malay Peninsula, as they seem to be practically identical, but the Burmese females have always a 
very much largery orange patch on the upperside of the forewing than the females from the Malay 
Peninsula, and the latter have usually a greater extent of white irroration in the anal region of 
the hindwing on the upperside than the former. I append a description of B. fabricite* 
Dr. J. Anderson obtained this species in considerable numbers in December, January 
and March in the Mergui Archipelago ; Major C. T. Bingham captured a single male speci- 
men on the Donat Range, Upper Tenasserim, in April ; Mr. Doherty found it in the cold season 
of 1888-89 both at Mergui and at Myitta in the Tenasserim valley ; it appears to occur through- 
out the length of the Malay Peninsula, and in the Islands of Daat, Nias, and Sumatra. 
The figure shews both sides of a male specimen from the Mergui Archipelago now in the 
collection of the Indian Museum, Calcutta. 
Tn 
* Biduanda fabricii, Moore. Drupadia fabricii, Moore, Journ. A.S.B., vol. liti, pt. 2, p. 32 (1884) 5 
Biduanda fabricii, id., Journ. Linn. Soc. Lond., Zoology, vol. xxi, p. 42, pl. iv, figs. 2, male ;3, female 
(7886). Hapirar: Mergui Archipelago ExpaNnse: Male and female, 1°25 to 1°37 inches. DgscrIptioN: 
“MALE. UprersipE, doth wings similar to the same sex of Biduanda thesmia, Hewitson, except that 
on the forewing there is a less amount of cuprescent-red on the disc. UNDERSIDE, Jorewing paler, the 
markings within the cell, the discal and marginal bands uniformly paler. Hindwing with the basal and 
discal spots brown, and much less defined.” (JZoore, l.c. in Journ. Linn. Soc.) ‘* FEMALE. UPppsRSIDE, 
forewing violet-brown, with a slightly broader and more irregular-shaped oblique medial red band than in’ the 
female of the typical Drufadia lisias, Fabricius, the band also having its outer border scalloped. Hindwing 
paler brown, with grey-bordered anal marginal spots. UNpERsIDR, forewing also differs from Drupadia 
Zisias in the apical area being suffused with adusky tint ; at the base of the cell is a small round pale-bordered 
spot, not an elongated triangular mark as in Drupadia lisias, the short band crossing the middle of the cell 
is black, the streak at the end of the cell is more distinct, the transverse discal band black-lined and blackish 
internally at the upper end, the submarginal line also being broader and more prominent. Aindwing with 
the markings less prominent than in Drufadia lisias, the basal bar shorter, the outer costal narrow streak 
further from the second, the first bar between the subcostal nervules being midway below the two outer costal 
[spots, instead of being in continuation of the inner of these two spots], the three subbasal spots are small 
and widely-separated, the bar at the end. of the cell and the spot beneath it are pale-centred, the zigzag discal 
interrupted band is composed of duplex streaks, which are wide apart with the interspace white.’’ (JZoore, 1. c. 
in Journ. A. S. B.) ‘‘ The forewing of the female on the upperside has a broad, irregular-shaped, oblique median 
red band, whereas in Biduanda thesmia the band is nearly obsolete.” (Jove, 1. c. in Journ, Linn, Soc.) 
