2ig RHOPALOCERA MALAY AN A. 



Genus NACIDUBA. 



X.iooIuIhi, Moore, Lep. Ccyl. i. p. 88 (1881). 



Anterior wings subtriangular ; costal margin moderately arched, outer margin more or less convex, 

 inner margin nearly strai.i,'ht. Costal nervure extending to about half the length of the costal margin ; 

 first subcostal nervule emitted at about one-third before end of cell, and anastomosed with the costal 

 nei-vm-e, second subcostal nervule emitted about midway between base of first and apex of cell, 

 third emitted close to tenuination of cell, third and fourth bifurcating a little beyond middle of third. 

 Cell broad, extending to more than half the length of the wing. Posterior wings subtriangular, costal 

 margin moderately convex, posterior margin oblique and slightly convex, with a single slender tail-like 

 appendage. Costal nervure arched and almost extending to apex, subcostal nervules bifurcating near end 

 of cell ; cell broad, first and second median nerrales with an apparently common origin near end of cell. 

 Body of moderate size and hairy ; palpi porrect, the second joint extending more than half beyond the 

 apex of head. 



Tliis genus liaving been so recently fouuded, and the number of species belonging to it 

 being still uncatalogued, little can be said as to its geographical distribution, beyond the remark 

 that it is probably a purely Oriental genus, and is generally distributed throughout that region. 

 It is also certain that more species of Nacaduha, than the few now and here enumerated, 

 remain to be discovered in the Malay Peninsula. 



1. Nacaduba macrophthalma. (Tab. XX., fig. 3 (? .) 



L)jcinia Macrophthalma, Felder, Verb. Zool. Bot. Gescb. 1862, p. 483; Eeise Nov. Lep. ii. p. 275, t. 34,, 



f. 35 (18651. 

 Lamjndes macnphthalma, Butl. Trans. Linn. Soc. ser. 2, Zool. vol. i. p. 547, n. 2 (1877) ; Wood-Mas. & de Nic. 



J. A. S. B. vol. L. p. 235, n. 40 (1881). 

 Nacaduha macrophthalma, Moore, Lep. Ceyl. i. p. 89, t. 37, f. 4, 4 a (1881) ; de Nic. .J. A. S. B. vol. li. p. 62, 



n. 172 (1882). 



Male. Wings above blue with strong violaceous reflections. Wings beneath greyish-brown ; anterior 

 wings with two whitish narrow disco-cellular fasciae at end of cell, beyond which are two similar fasciae 

 extending from third and fourth subcostal nervules to middle median nervule, and a similar pair placed 

 beneath and between these two series, extending from second median nervule to near inner margin ; 

 a marginal and two submarginal narrow whitish fascije and a small spot between second and third 

 subcostal nervules. Posterior wings irregularly crossed by six narrow, more or less broken and sometimes 

 fused whitish fasciaj, and a marginal and two submarginal (the innermost broadest) fascise of the same 

 colour ; a large black spot margined with ochraceous near anal angle, placed between the second and third 

 median nervules, and a small streak of metallic bluish-green scales margined with black at anal angle. 

 Body and legs more or less concolorous with wings. 



Exp. wings, c? , 35 to 39 millim. 



Hab.— Continental India ; Sikkim (de Nic.) ; Darjeeling (coll. Dist.).— Ceylon (Thwaites— coll. Dist.). 

 —Nicobar Islands ; Pulo Milo (Felder).— Malay Peninsula; Malacca (Pinwill— Brit. Mus.).— Philippine 

 Islands ; Mindanao (Challenger Exped. — Brit. Mus.). 



This species was first described from specimens collected by Frauenfeld during the stay 

 of the Novara Expedition at the Nicobar Islands. I have not received it myself from the 

 M day Peninsula, the figure being taken from an example in the British Museum, collected at 

 Malacca by Capt. Pinwill. The female is also unknown to me. 



