404 L. de Niceville & Dr. L. Martin —Butterflies of Sumatra. [No. 3, 
occurs, and it lias the same habits as G. erotoides. As Dr. Martin never 
obtained the latter species from places higher than Bekantsclian, and 
never true G. battaka from places lower than Bekantschan, and as both 
species occur quite at the same time, there can be no question here of 
seasonal dimorphism. Dr. Martin notes that he is quite sure G. battaka 
is a good species restricted to the mountainous regions of our area. 
He notes also that he has received some specimens of G. battaka from 
Java, but without exact locality, and hopes to hear later at what 
elevation they were obtained, as G. erotoides occurs also in that island. 
Dr. Martin further notes that he obtained one female of C. battaka , 
which differs greatly from the female of the former species, these 
differences are pointed out in his original description of C. battaka 
(l.c.). 
139. Apatura namouna, Doubleday. 
Hitherto this species has not been recorded south of Upper Burma, 
its re-appearance in Sumatra is most interesting. In our area it is a very 
rare butterfly, and is found only on the higher hills at an elevation of 
not less than 3,000 feet, and from the Central Plateau and the Gayoe 
mountains. The specimens from Sumatra are decidedly smaller than 
those from Northern India, but do not otherwise differ. No female 
from Sumatra has been obtained. 
140. * Apatura parvata, Moore. 
Grose Smith. This is almost certainly a wrong identification, 
A. parvata being restricted to Sikhim and Bhutan. The specimen Mr. 
Grose Smith obtained was probably a female of the next species. 
141. Apatura ( Rohana ) sumatrensis, Staudinger. 
A. ( Rohana) parisatis, Westwood, var. sumatrensis , Staudinger, Iris, vol. ii, 
p. 80 (1889). 
A. parisatis , Snellen (nec Westwood), Midden-Sumatra, Lepidoptera, p. 19, n. 1, 
pi. iii, figs. 1, male ; 2, male underside x 2 (1892). 
Snellen as parisatis. Hagen as parisatis. Staudinger as parisatis , 
and parisatis, var. sumatrensis. Semper as camiba. The male maybe 
known from the N.-E. Indian and Burmese species, A. parysatis, West- 
wood, by having a small diffused apical ferruginous patch on the up- 
perside of the forewing, which is absent from the continental species. 
The females of the two species differ but slightly. Like Atella alcippe, 
Cramer, this insect only appears on red soil (probably the food-plant 
of the larva grows only on that soil), where the males from Selesseh 
to the higher hills are not rare, whereas the females are always scarce, 
