146 LYCENIDA. NACADUBA. 
N. pavana occurs in Sikkim much less commonly than WV. macvophthalma, also in Bhutan, 
Cachar, the Andaman Isles, and in the Mergui Archipelago. The specimens from the last- 
named locality were identified by Mr. Moore as V. macrophthalma. 
The figure shews both sides of a male specimen from Cachar in the collection of the 
Indian Museum, Calcutta. 
721. Nacaduba korriana, Distant. 
NV. kerriana, Distant, Ann. and Mag. of Nat. Hist., fifth series, vol. xvii, p. 253 (1886) ; idem, id., Rhop» 
Malay., p. 455,n. 7, pl. xlii, fig. 12, #ale (1886). 
HapiraT: Thoungyeen forests, Upper Burma ; Malacca; Singapore. 
EXPANSE: 6, 1°4 inches. 
DESCRIPTION : MALE. “UPPERSIDE, both wings pale lavender-blue. Forewing with the 
costal margin narrowly, and the outer margin more broadly fuscous. W7diwing with the 
outer margm fuscous; and with marginal fuscous spots separated by the median nervules, 
and which are divided from the outer margin by narrow greyish linear markings. 7Zaz/ 
fuscous, apex greyish-white. UNDERSIDE, doth wings pale greyish-brown. S/orewing with 
the following whitish fascize :—one crossing the cell just before the apex, and extending from 
the subcostal nervure to near the inner margin ; a short disco-cellular fascia just beyond tke end 
of the cell, preceded by a small spot between the second and third subcostal nervules ; these 
are followed by a fascia which nearly crosses the whole breadth of the wing, commencing at 
the second subcostal nervule and extending to near the inner margin; the outermost fascia being 
shorter, and commencing at the lower subcostal nervule terminates on the second median 
nervule ; outer margin broadly whitish, containing a double series of dark fuscous spots ; 
extreme margin dark fuscous. C7/éa brownish. Aindwing crossed by a series of whitish 
fascize, the outer margin as on the forewing with two marginal black spots, which are 
separated by the second [first] median nervule and are irrorated by bluish scales and preceded 
by ochraceous shading. ody above and beneath more or less concolorous with the wings ; 
legs fuscous, streaked with greyish.” (Déstant, 1. c. in Rhop. Malay.) ; 
I possess a single male of this species which agrees on the upperside exactly with Mr. 
Distant’s figure ; the underside differs in the ground-colour being paler, the white fascize conse- 
quently less distinct. It was taken by Major C. T. Bingham in the Thoungyeen forests, 
Upper Burma, on Ist April, 1882. It is a most singular looking insect, and I certainly should 
have treated it as an aberration or “ sport ” of MV. macrophthalma, Felder, had not Mr. Distant 
described it as a distinct species from specimens from two localities. In my specimen the 
double marginal series of black spots on both wings on the underside are very prominent 
owing to the ground-colour being almost pure white ; this feature would alone make WJ. 
kerriana easily distinguishable, though it is probably less prominent in the type specimen, 
722. Nacaduba viola, Moore. (FLATE XXVII, Fic. 183 ¢). 
Lampides viola, Moore, Ann. and Mag. of Nat. Hist., fourthseries, vol. xx, p. 340 (1877) ; Nacaduba 
viola, Moore, Lep. Cey., vol. i, p. 89, pl. xxxvili, figs. 1,14, male ; 1a, female (1881) 3 idem, id., Journ. Linn. 
Soc. Lond., Zoology, vol. xxi, p. 40 (1886) ; id., Distant, Rhop, Malay., p. 219, n. 3, woodcut n. 65, male, pl. 
xx, fig. 24, male (1884); id., Wood-Mason and de Nicéville, Journ. A. S. B., vol. lv, pt. 2, p. 367, n. 125, pl- 
xvii, fig. 12, male (1886) ; Nacaduba prox. viola, de Nicéville, Journ. A, S. B., vol. liv, pt. 2, Pp. 3, n. 296 (1885); 
Lycanesthes merguiana, Moore, Journ. A, S. B., vol. liii, pt. 2, p. 23 (1884). 
HapitaT: Sikkim, Cachar, Sibsagar, Mergui, Malacca, Singapore, Nilgiris, Ceylon, 
Andaman Isles. 
EXPANSE: 6, ‘9 to1'3; 2, 1'O to I'I inches. 
DESCRIPTION. “MALE. UPPERSIDE, doth wings dark violet-blue, with a narrow black 
marginal line. Cvz/ia whitish at the edge. UNDERSIDE, both wings violet-grey, with six broken 
very pale narrow delicate whitish bands. Forewzzg with the two inner and outer bands short. 
Hindwing with a small black anal and large subanal spot, speckled with blue and ochreous- 
bordered. FEMALE. UPPERSIDE, forewing smalt-blue in the middle. Aixdwing with an indis- 
tinct marginal row of pale-bordered black spots,” (J/oore, 1, c. in Ann, and Mag. of Nat, Hist,) 
