nearly the whole of the cell and the greater portion of the basal area of interspace 1 are sometimes also white. Hindwing: dark brownish black fading to dusky brownish white posteriorly; cell, basal half of interspace 4 and an elongate, broad, outwardly pointed streak in interspace 5 white. Underside: similar to that of the male, but the white area on the forewing more restricted and of a purplish tint, the dusky-black shading on the disc that borders the green on the apical area broader, and the greater portion of interspaces 1a and 1 also shaded with dusky purplish black. Hindwing: darker than in the male, the veins more prominently bordered with black scaling, the posterior, discal, ill-defined, dark band or patch broader and more conspicuous. Antenna, head, thorax and abdomen purplish brown, the thorax with some long greyish hairs; beneath: the palpi and thorax greenish yellow, abdomen whitish. Dry-season brood Male is similar to the wet-season brood, but on the upperside, the black on the apex and termen of the forewing not nearly so broad, on the latter often not reaching vein 1; on the hindwing the black is reduced to a sparse powdering of black scales along the termen. Underside: similar to that of the wet-season brood but the greenish-yellow suffusion replaced entirely by ochraceous brown; on the hindwing the white markings of the wet-season form replaced by a paler ochraceous shade than on the rest of the wing; the veins all broadly bordered with irrorated black scaling; the discal obscure transverse band more or less as in specimens of the wet-season brood, but often obsolescent. Antennae black, head and thorax anteriorly ochraceous brown, thorax medially and posteriorly with long bluish-grey pile, abdomen black with short white hair-like scaling; beneath: the palpi ochraceous with some black hairs, thorax ochraceous brown, abdomen white. Female very similar to those of the wet-season female, but the blackish-brown colouring on the upperside paler and duller in tint. Underside: differs in the yellowish-green suffusion on both forewings and hindwings, which is replaced by ochraceous brown. Antennae, head, thorax and abdomen as in the male. Wingspan of 58–74 mm. Distribution North-eastern India: Sikkim; Bhutan; Assam: Sylhet; the Khasi Hills; Manipur: Upper and Lower Burma; the Shan States; Tenasserim. Subspecies C. n. remba is found in Sri Lanka and southern India while C. n. andamana is found in the Andaman Islands. Subspecies Subspecies are: C. n.