Lepidoptera of Sikkim, 413 
The under side has a conspicuous brown patch at the 
apex of the fore wing, and the brown markings are 
more distinct than during the rainy season, sometimes 
showing through on the upper side. The female of this 
form, however, has the black borders of both wings 
fully as broad as in the later broods, and though I am 
not in a position to say that this extremely broad- 
bordered female belongs to the almost borderless male, 
yet I have no other specimens which agree so well with 
them on the under side. 
In some of these large females, which are like nothing 
I have from other places, the patch on the disk of the 
fore wing below shows plainly on the upper side as a 
short blackish bar at the end of the cell. 
All these facts go to prove that climate, season, and 
temperature are influences which can modify to a great 
extent the size, colour, and markings of Terias hecabe ; 
and, until the advocates of the subdivision of species 
have shown facts tending in the opposite direction, I 
shall refuse to recognise the validity of their undefined, 
and, as. I maintain, undefinable species. 
367. Terias rubella. 
Terias rubella, Wall., Trans. Ent. Soc. Lond., 1867, 
p- 8258. 
2 T. drona,. Horsf., Cat. BH.) 1. Ci, p. 187, t. 66. £18 
(1829). 
This, though one of the commonest T'erias in the 
North-west Himalaya, the Khasias, and Western India, 
is very rare in Sikkim. I have but one or two speci- 
mens of it, and, according to Moller, it is only found at 
the foot of the hills. If the Himalayan insect is really 
distinct from the Malayan, as Wallace says it is, it must 
bear the name of rubella, which Wallace described from 
China, Calcutta, and Darjeeling. I have not the same 
material from the Malay Islands which Wallace had for 
comparison, but I cannot allow that two species of this 
form exist in the Himalayas, as Moore says. 
868. Terias leta. 
Terias leta, Boisd., Sp. Gen. Lep., i., p. 674 (1836). 
T’. santana, Feld., Reise Nov., 1., p. 211 (1865). 
TRANS. ENT. SOC. LOND. 1888.—PpaRT III. (ocT.) 2F 
