396 L. de Nic£ville Dr. L. Martin — Butterflies of Sumatra. [No, 3, 
Melanitisj Amathusia and Thaumantis flying at the same time. Only when 
they come clown to rest, or to deposit their eggs are they canght. The 
larva feeds on different Graminese , Dr. Martin has found them even on 
the famous Lalang grass (Imperata arundinacea), and on the sugnr- 
cane (Saccharum officinale). The larvae always keep in pairs, never 
more than two together; they rest with the head downwards, 
and eat the lower portions of the leaves on which they rest. 
The pupa is quite green, and is very similar to that of A. phidippus. 
I). necho is not found at a higher elevation than Bekantschan. It is pro¬ 
bable that D. necho , Felder, D. cheops , Felder, and J). dis, de Niceville, 
from Java, Borneo and Sumatra respectively, all represent a single 
species, of which the first-named is the oldest. 
115. Discophora sondaica, Boiscluval. 
Hagen. Distant. Dr. Hagen records D. tullia , Cramer, as well as 
this species from Sumatra, but according to Mr. Moore, D. tullia is con¬ 
fined to China, especially to Hongkong. In all Dr. Hagen records four 
species of Discophora from Sumatra; we know two only. It is found at 
lower elevations than D. necho , Felder, not much higher than Bincljei, 
where it is not uncommon near bamboo hedges. The females as usual 
in the genus are much rarer than the males. Dr. Martin obtained his 
first female from a pupa which he found near the manager’s house of the 
Bekalla Estate under the roof of a small attap shed on the riverside 
near a thicket of bamboos. The female is much more beautiful than 
the same sex of D. necho , which has only a broad oblique yellow band 
across the forewing on the upperside. 
116. Enispe euthymius, Doubleday. 
Hagen as eutymius [sic], Sumatran specimens resemble the dark 
form of this species found in Assam and Burma which has been named 
D. tessellata by Mr. Moore, but which is certainly not a distinct species, 
as it is found in some localities with, and grades imperceptibly into, 
the typical form. Its occurrence in Sumatra while apparently absent 
from the Malay Peninsula is an interesting fact in geographical dis¬ 
tribution. It is everywhere rare, and in Sumatra is found only on the 
Central Plateau, and is occasionally brought in by the Battak collec¬ 
tors. Dr. Hagen states that he has always obtained this species together 
with Limenitis hoclcii , Moore, which is a curious coincidence. 
117. Clerome arcesilaus, Fabricius. 
Grose Smith. Snellen. Hagen. Distant. The commonest species 
of the genus in Sumatra as elsewhere. 
