1895.] L. de Niceville & Dr. L. Martin— Butterflies of Sumatra. 365 
be nearer to the Javan H. belia than to the whiter H. linteata , Butler, 
from the Malay Peninsula, but at best the latter is but]a local race of 
the former. For many years there existed a single specimen in Dr. 
Martin’s collection without locality label, and he nearly despaired of get¬ 
ting it again, when in May, 1894, he obtained all at once in one spot five 
specimens from Bandar Quala in Serdang, where no specimen of 
H. lynceus , Drury, is ever found, as Mr. Puttfarcken, a very enthusiastic 
collector of that place, has noted. 
3. Ideopsis ( Gamana) daos, Boisduval. 
Snellen as Hestia daos. Hagen as J. daos , Horsfield and Moore 
[sic]. Butler. Staudinger. Distant. Mr. W. F. Kirby, in “Allen’s 
Naturalist’s Library. Lepidoptera,” vol. i, p. 15 (1894), suggests that 
the form of this species occurring in Sumatra may be distinct from the 
typical Bornean form. I possess specimens from both islands, and 
find that they agree almost exactly. Dr. Staudinger refers to a darker 
form of the species occurring in Sumatra and Nias. The former is 
normal; the latter is the Gamana costalis of Moore, and is a distinct 
species. In Sumatra I. daos is found not higher than Bekantschan. It 
is mimicked by a very beautiful day-flying Moth, probably of the genus 
Isbarta, Walker (? I. glauca , Walker, from Sumatra), family Zygsenidx. 
On “ The Crag ” at Penang, 2,000 feet, I. daos is very common. 
4. Danais ( Badena ) vulgaris, Butler. 
Grose Smith. A common species of the plains, the female much 
rarer than the male. It occurs all the year round, but if there should 
be a break in the regular rainfall, as there is sometimes in February 
and March, then only worn specimens are on the wing, shewing that 
damp weather is necessary for the disclosure of imagines; otherwise 
generation follows generation regularly throughout the year. 
5. * Danais ( Badena ) similis, Linmeus. 
Grose Smith. Snellen. Hagen. Mr. Henley Grose Smith is the 
only writer who gives both D. vulgaris , Butler, and D. similis from 
Sumatra. Mr. Moore restricts D. similis to Hongkong and Formosa. 
I greatly doubt its occurrence in Sumatra. 
6. * Danais ( Uadena ) jitventa, Cramer. 
Moore. Semper from West Sumatra. As it is found in Singapore 
(Moore), Banka, Java, Labuan, Lombok and Billiton, it is possible that it 
may also occur in Sumatra in the south and west. Banka and Java 
are only separated from Sumatra by very narrow straits. 
