NACADUBA. 391 



occupying the basal posterior two-thirds of the wing, and unlike 

 the typical form the posterior two-thirds of the hind wing. 

 Underside : precisely as in the typical form. Antennae, head, 

 thorax and abdomen also similar to those of the typical form. 



Exp. rf $ 30-32 mm. (1-18-1 -27"). 



Hab. Great Nicobar and Central Group, Nicobar Islands. 



746. Nacaduba ardates, Moore (Lycama), P. Z. S. 1874, p. 574, pi. 67, 

 tig. 1; i<l Lep. Ceyl. i, 1881, p. 90, pi. 38, figs. 2, 2<z, rf; de 

 JV. Butt. Ind. iii, 1890, p. 163, pi. 27, fig. 185 rf tailless form 

 (? noreia). 



? Lycsena nora, Felder, Sitzungsber. Ak. Wiss. Wien, xl, 1860, p. 458 ; 

 id. Novara Iteise, Lep. ii, 1865, p. 275, pi. 34, fig. 34; de N. 

 (Nacaduba) Eutt. Ind. iii, 1890, p. 147. 



<S . Upperside : purplish-brown or purplish with a dark tint, some 

 specimens brown with a very slight purplish sheen seen only in 

 certain lights. Fore and hind wings : nearly uniform, both with 

 slender black anticiliary lines, the hind wing in addition with the 

 costal and dorsal margins paler ; in most specimens with a sub- 

 terminal black spot in interspace 2, sometimes seen only by 

 transparency from the underside ; tail black tipped with white. 

 Underside : brown, hoary, brownish or pale dull brown. Fore 

 wing : a subbasal pair of transverse white strigaa, a shorter pair 

 along the discocellulars and a discal pair ; these strigae all 

 narrowly edged on the inner sides of each pair with fuscous 

 which gives the appearance of transverse bands somewhat darker 

 than the ground-colour ; the subbasal pair extend from vein 1 to 

 vein 12, the discocellular pair from upper to lower apex of cell 

 and the discal pair are very irregular and dislocated at each vein, 

 the whole having the appearance of a dark sinuous band ; terminal 

 markings often very faint and ill-defined or again fairly prominent 

 and consisting of a double subterminal series of transversely 

 linear, sometimes lunular, dark spots, with edgings paler than the 

 ground-colour ; lastly, an anticiliary dark line. Hind wing : with 

 transverse pairs of white, inwardly fuscous-edged strigae similar to 

 those on the fore wing, but even more irregular and broken ; the 

 subbasal pair extended from costa to vein 1, below which the 

 dorsal area is whitish, the discocellular pair extend from the costa 

 and posteriorly coalesce with the discal pair which are as irregular 

 and dislocated as in the fore wing ; terminal markings similar to 

 those on the fore wing, but the double subterminal series of dark 

 spots more luuular and a prominent round black subterminal spot 

 crowned with ochraceous in interspace 2. Antennae, head, thorax 

 and abdomen dark brown ; the shafts of the antennas speckled 

 with white ; beneath : the palpi fringed with black, thorax dark 

 greyish-brown, abdomen white. $ . Upperside : brownish purple, 

 sometimes fuscous. Fore and hind wings : as in the c? with 

 anticiliary dark lines, but differ as follows : Fore wing : an 

 iridescent bluish sheen from base outwards to disc ; hind wing : 



