1895.] L. de Niceville & Dr. L. Martin— Butterflies of Sumatra. 475 
453. Tajuria thria, de Niceville. 
T. thria, de Niceville, Journ. Bomb. Nat. Hist. Soo., vol. x, p. , n. 26, pi. T, 
figs. 38, male; 39, female (1896). 
Found in Tenasserim, Burma, and the Battak Mountains south 
of Bekanfcschan, Sumatra, in March, May and July. It is rare, and 
may easily be distinguished from its allies by the male being entirely 
black on the upperside of the forewing. 
454. Tajuria blanka, de Niceville. 
T. blanket, de Niceville, Journ. A. S. B., vol. lxiii, pt. 2, p. 39, n. 34, pi. iv, 
fig. 4, female (1894). 
Two females of this very rare species have been obtained in the 
higher mountains ; the type specimen in October, 1893. 
455. Tajuria donatana, de Niceville. 
Originally described from Burma. Two male specimens only 
have been obtained in March and July at Bekantschan at the foot 
of the Battak mountains in Sumatra. This species is quite distinct 
from the Celebesian species, T. orsolina , Hewitson, to which it is 
nearly allied. 
456. Ops ogyges, de Niceville. 
0. ogyges , de Niceville, Journ. Bomb. Nat. Hist. Soc., vol. ix, p. 298, n. 25, 
pi. P, figs. 36, male; 37, female (1895). 
Originally described from Manlmain in Burma. Very rare, Dr. 
Martin obtained one male specimen in the Battak mountains in Sep¬ 
tember, 1894, which I have not seen. 
457. Ops melastigma, de Niceville. 
In 0. ogyges , de Niceville, the “male-mark” on the disc of the 
forewing on the upperside is indistinct, and can be seen only in certain 
lights. In 0. melastigma it is exceedingly prominent, quadrate, and 
dingy black or fuliginous in colour. It is very rare in Sumatra, Dr. 
Martin possesses a single male taken in the Battak mountains in 
December. 
458. Britomartis cleoboides, Elwes. 
B. cleoboides , de Niceville, Journ. Bomb. Nat. Hist. Soc., vol. ix, p. 306, n. 1 (1895). 
Messrs. Grrose Smith and Kirby have both recorded Tajuria isaeus , 
Hewitson (see No. 452) from Sumatra, but probably the specimens so 
identified should be the present one, which has only recently been 
described. The true “ Iolaus” isaeus , the type specimen of which was 
J. ii 60 
