304 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. IX. 



space between them on the margin does not bear metallic blue scales. 

 From B. buto it differs on the upperside in the different shade of the 

 ground-colour, being a paler blue and not iridescent green in any 

 light ; the blue colour also is far more extensive in the forewing ; and 

 the same differences hold good on the underside as regards the discalband 

 as obtain between it and B. cleoboides, but it agrees with B. buto in the 

 complete separation of the yellow patches on the hindwing. From 

 " lolaus " ister, Hewitson, of which I possess a female from Maulmain, 

 Burma, and another from Borneo, it differs in the greater extent of the 

 blue coloration of the forewing on the upperside, and in the outline 

 of the hindwing, in T. tyro the outer margin is well rounded, making 

 the wing broader, in "lolaus " ister the outer margin is straight, there- 

 by making the wing much narrower. Colonel Swinhoe* suggests that 

 " lolaus " ister is the female and Camena carmentalis\ the male of one 

 and the same species. I made the same remark when describing the latter, 

 but now that I possess specimens of a lolaus " ister, I think it improba- 

 ble that this is so, as the coloration of my species on the upperside 

 is of a distinctly purple shade, while " lolaus" ister is pale u cerulean- 

 blue," as Hewitson quite correctly describes it. Tajuria relata. Distant, J 

 is another allied but quite distinct species, which is said by Mr. H. J. 

 Elwes to be the same as T. isceus, Hewitson, see ante p. 295. It is very 

 unfortunate that the female sex of so many allied species should alone 

 be known. It may be, however, that the sexes of several of the known 

 species of Tajuria have been incorrectly diagnosed ; the males 

 are often very difficult to determine, having no " male-marks " or 

 distinctive coloration, and it is more than probable, I think, that male 

 specimens are often recorded as female and vice versa in this genus. 



Described from two examples from Tenasserim and three from 

 N.-E. Sumatra in my collection. 



Genus BRITOMARTIS, nov. 



Male. Fokewing, short, broad; costa regularly and evenly somewhat 

 strongly arched ; apex rounded ; outer margin regularly convex ; 

 inner angle rounded ; inner margin slightly concave, longer than the 



* Trans. Eat, Soc. Lond., 1893, p. 302, n. 289. 



f Journ. Bomb. Nat. Hist. Soc, vol. vii, p. 335, n. 12, pi. H, fig. 10, male (1892). 

 % Rbopalocera Malayana , pp. '246 and 460, n. 3, pi. xxi, fig. 12, female (1884-86), from 

 Province Wellealey and Malacca (Distant), Perak {coll. de Niciville). 



