1so LYCANIDA:’ NACADUBA. 
DESCRIPTION : “ MALE. UPpPeErRSIDR, doth wings violet-blue, with very narrow indistinct 
brown marginal line. UNDERSIDE, doch wines pale greyish-brown, crossed by five prominent 
dark- bordered white slightly-waved bands, an intermediate short band at the end of the cell, and 
two marginal blackish-interspaced bands, the inner one sinuous. //zzdwéing crossed by six 
broken white bands, two marginal blackish-interspaced sinuous bands, a large subanal and 
asmall anal black spot, both silvery-speckled and ochreous-bordered. FEMALE. UPPERSIDE, 
both wings paler than in the male, the basal part brilliant greyish-blue. Forewzzg with the 
costal border and outer margin broadly black. A¢zdweéng with the costal border broadly 
black, and a marginal row of black spots enclosed by a lunular line.’”” UNDERSIDE as in the 
male. 
“ Allied to Z. [=M.] deroé, Felder” [from Malacca and Luzon]. (doore, 1, c. in Ann, 
and Mag, of Nat. Hist.) 
“ LarVA onisciform 3 pale rose colour, with dorsal and lateral rows of brighter spots. 
Feeds on the very young leaves of Vaterta indica, PUPA somewhat cylindrical, head blunt ; 
reddish, with minute black spots.”’ (J/oore, 1. c. in Lep. Cey.) 
Thanks to the kindness of Messrs. Fairlie and Green, I have before me, as I write, very 
large series of both M. prominens and XN. atrata from Ceylon. Following the characteristic 
differences given by Mr. Moore to define these two species, I have, with great difficulty, divided 
them into sets, the extremes of each being sufficiently distinct, but they gradually merge 
into one another and at the point of junction can hardly be separated. The blue coloration of 
the females on the upperside is very variable, some being almost white in some lights, 
some a little darker in shade, others again quite purple. I think further knowledge will 
make it clear that JV. atvata is a variable species, and that it includes 4. fvomdnens as one 
extreme of its variations. I possess specimens of it from Bholahat, Sikkim, Bhutan, several 
places in Assam, from Orissa, North Canara, the Shevaroy Hills, and Ootacamund. In seven 
of these places 4. atrata also occurs, a fact which should not be overlooked, 
727. Nacaduba plumbeomicans, W.-M. and de N. 
Lamefpides plumbeomicans, Wood-Mason and de Nicéville, Journ, A,S.B., vol. xlix, pt. 2, p. 231,n. 41 (1880) ; 
Nacaduba plumbeomicans, Moore, Journ. Linn. Soc. Lond., Zoology, vol. xxi, p. 40 (1886); Lampides plum- 
Leomicans, var. nicobaricus, Wood-Mason and de Nicéville, Journ, A, S. B., vol. 1, pt. 2, p. 234, n. 35 (1881). 
Hasirat : South Andaman and Nicobar Isles; Mergui; Chittagong Hill Tracts. 
EXPANSE: ¢, I'I to 1°33 2,116 to 1°25 inches. 
DESCRIPTION : “ Closely allied to WV. macrophthalma, Felder, but much smaller; with 
three instead of two fascize on the underside of the forewing, with all the fasciz relatively 
broader, and with those of the hindwing much less complexly faulted and centorted. MALE. 
UppersIDE, doth wings dark amethyst-purple, with a dull greyish leaden metallic lustre, witha 
deep black anteciliary line and fuscous ci/ia. UNDERSIDE, both wings pale fuscous of a 
purplish tinge, with a marginal and a submarginal fascia composed of suboval spots of a 
darker shade than the ground, both margined and connected by whitish, the latter of them 
bearing in the hindwing subanal and anal black spots in every respect asin . macrophthalma, 
except that the luteous inner line is rather more distinct. orewing with a basal fascia, a disco- 
cellular fasciole, and a discal fascia faulted as in 4. macrophthaima at the second median nervule ; 
with the fasciz as also the fasciole commencing at the costal nervure where they are all broken. 
Hindwing with corresponding fasciole and fascice, which latter are more or less faulted at every 
vein though much less contorted and consequently more easily traced than in WV. macroph- 
thalma; fascize and fascioles of both wings margined on both sides with fuscous of a rather 
deeper shade than the ground and with whitish, FEMALE. UPPERSIDE, both wings dull 
smoky. forewing with a pale discal patch which hasa brilliant metallic pale bluish lustre 
in certain lights. Mindwing with a thin interrupted white line before the dark anteciliary 
one and a submarginal row of dark spots before it, spots and line increasing in size, breadth, 
and distinctness from the apical angle to the subanal region, the former obscurely encircled 
internally with smoky whitish, UNDERSIDE, both wings lighter, with all the markings more 
