RHOPALOCERA MALAYAN A. 237 



pale bluish, the posterior margin black, inwardly bordered with wliiti' near anal angle, wliere there are 

 two transverse black marginal spots, the fringe white ; tail-like appendages blackish with marginal white 

 fringe ; costal area pale hyaline, darker near base, upper portion of cell and basal area between subcostal 

 nervules talc-like, and pale transparent stramineous, above, beneath, and beyond which the colour 

 is fuscous. The anterior wings beneath reddish oehraceous, a broad basal and a transverse central 

 fuscous streak in cell, a pale fuscous line at end of cell, and two transverse, narrow, waved fuscous 

 fasciae between end of cell and outer margin. Posterior wings greyish-white, the costal margin more 

 or less suffused with reddish oehraceous, and with ten large fuscous discal spots, the upper six of 

 which are subquadrate but irregular in size, and the posterior four are more irregular in shape, and 

 have their centres more or less greyish ; a submarginal and marginal fuscous line, the first of which is 

 broken and irregular, and between which and the margin is a narrow fuscous streak, leading to a long, pale 

 bluish fuscous spot ; beneath the submarginal line near abdominal margin are two narrow oehraceous 

 fasciiB, which amalgamate inwardly, and lietween which the colour is pale metallic bluish. Body above 

 fuliginous-brown, beneath greyish-white; legs greyish -white, annulated and streaked with fuscous. 



Female. Wings above much paler than in male, and the posterior wings pale fuliginous-brown, 

 excepting near anal angle, where there is an obscure bluish patch with a few obscure fuscous marginal 

 spots. Wings beneath as in male, but with anterior wings paler in hue. 



Expanse of wings, 35 to 38 millim. 



Hab. — Malay Peninsula ; Province Wellesley (coll. Dist. & Sauer) ; Perak (Townsend — coll. Godm. 

 and Salv.) ; Sungei Ujong (Durnford) ; Malacca (Biggs) ; Singapore (Kerr — eoll. Dist.). — Sumatra ("Wallace 

 — coll. Dist. & Moore). — Daat Island (eoll. Dist.). 



This species varies very much in size, and is probably somewhat widely distributed. It is 

 alHed to the Mijrina ravindra, Horsf., a Javan species which belongs to, and is the type of, this 

 genus. We thus find I), moorei inhabiting Borneo, Sumatra, and the Malay Peninsula, and 

 difiering from a closely allied Javan species, as is so frequently the case in all l)ranches of 

 Malayan Zoology, and has been so well and ably pointed out by Mr. Wallace. 



Genus BIDUANDA, gen. nov. 



Biihtcnida, Distart, antea, p. 233. 



Anterior wings globosely subtriangular, the costal margin arched, the outer margin convex, the inner 

 margin nearly straight. Costal nervure terminating on costa before the apex of cell ; first subcostal 

 nervule emitted about the middle of cell, second about midway between tirst and third, the last of which 

 arises a little before end of cell, third and fourth bifurcating at a short distance from apex of wing; 

 disco-cellular nervules somewhat perpendicular ; first median nervule emitted at end of cell, second nearer 

 to first than third, which is emitted beyond middle of cell. Posterior wings subovate; costal margin arched 

 at base, and then straight and strongly oblique to apex, which is obtuse ; posterior margin as in Dnqmdia, 

 the abdominal margin angulated but not so suddenly cleft as in that genus. Costal nervure reaching apex 

 of wing ; other neuratiou much as in L'nijMidid. 



The species included in this genus were given me by Mr. Moore as forming part of his 

 genus Brupadia, the description of which is promised to be published in a forthcoming part of 

 the 'Journal of the Asiatic Society of Bengal.' As they, however, possess four subcostal 

 nervules to the anterior wings, whilst the species of Dnqmdia are provided only with three, 

 it became necessary to form a new genus for their reception. Mr. Moore takes the Miji-ina 

 ravindra, Horsf,, as the type of Drupudia, and the type of Biduanda must be found in the 

 Mijrina thesmia, Hew. 



August, 1884. 3 p 



