1895.] L. de Niceville & Dr. L. Martin —Butterflies of Sumatra. 457 
say for certain, as tlie npperside is alone figured and that very badly, 
•while the description of the underside “ Very pale brown, streaked and 
mottled with white. Hindwing with two black spots at the anal angle 
as above ” is quite inadequate to distinguish the species. 
351. Nacaduba nauda, de Niceville. 
N. nanda , de Niceville, Journ. Bomb. Nat. Hist. Soo., vol. x, p. 34, n. 16, 
pi. S, fig. 23, male (1895). 
352. Nacaduba nelides, de Niceville. 
N. nelides, de Niceville, Journ. Bomb. Nat. Hist. Soc., vol. ix, p. 280, n. 16, 
pi. 0, fig. 24, male (1895). 
353. Nacaduba noreia, Felder. 
Hagen as nor a. The Lycsena nor a, of Felder, from Amboina, has 
tails, and almost certainly equals N. ardates , Moore. N. noreia is 
typically tailless, and was described from Ceylon from a female. I have 
seen the type at Vienna, and it is what I have called the tailless form of 
N. ardates. N. noreia occurs typically in Sumatra. What I consider to 
be its female, and of which we possess many specimens (all of them to 
my eyes are obviously females, though Dr. Martin disputes the fact, as 
he says he has taken them sucking up moisture on damp spots on the 
roads, a habit quite unknown to female Lycsenidae, being confined to the 
males), is very curiously marked on the underside, having the ground¬ 
colour ochreous-yellow or luteous, in both wings with a very prominent 
marginal series of black spots, those in the fore wing of equal size 
throughout, in the hindwing counting from anteriorly backwards the 
first and the sixth larger than the rest; within this series of spots is 
another submarginal obscure fuscous series ; no basal or discal markings 
to both wings whatever. Dr. Martin proposes to call this “ species ” 
Nacaduba lutea, and has described it in a paper published in Munich 
entitled “ Einige neue Tagschmetterlinge von Nordost-Sumatra, pt. 1, 
p. 1, n. 1 (1895), and I have figured it from a female in Journ. Bomb. 
Nat. Hist. Soc., vol. x, pi. S, fig. 24 (1895). In Sumatra also occurs 
typical N. ardates , which is tailed. This I hold to be a dimorphic 
form in both sexes of N. noreia. Its female is most variable, some 
forms of it from Burma in my collection being marked almost exactly 
as in N. lutea , Martin, the basal and discal markings being almost 
obliterated. I have not seen any females of true N. ardates with tails 
from Sumatra. The Plebeius lcupu , Kheil, from Nias = N. ardates , Moore. 
354. Nacaduba dana, de Niceville. 
If the species of Cyaniris are more restricted to higher elevations, 
