316 Mr. H. J. Elwes’ catalogue of the 
in the rainy season. The female remains unknown. 
In 1886 it was taken as late as November. All that 
I have seen are, though very nearly allied to sidonis, 
smaller, and distinguished by the different markings and 
duller colour of the under side. 
44, Lethe sidonis. 
Debis sidonis, Hew., Ex. Butt., iii.; Debis, t. iii., 
fig. 16 (1862). 
Lethe sidonis, Butt. Ind., p. 159. 
The commonest species of Lethe in the zone of forest 
from 4 to 8000 ft. between April and November, where 
it is constantly seen flitting along the forest paths, and 
settling both on the ground and on low vegetation. 
The female seems much rarer, and probably flies but 
little. Sikkim specimens show the markings of the hind 
wing below of a much more distinct and brilliant violet 
than those from Mandi in the North-west Himalaya, 
and are rather smaller and less brilliant than those I 
took in the Khasia. 
45. Lethe maitrya. 
Lethe maitrya, de Nicé., J. A. §.B., 1880, pt. i, 
p- 245; Butt. Ind., t.x., fig. 20, g. 
Though described quite recently from the North-West, 
this species is very abundant on Tonglo and along the 
Singalelah range between Sikkim and Nepal, from 
9 to 12,000 ft., in July and August, where it keeps 
company with Zophoessa jalaurida, as in the North-west. 
Talso found it on the Rishilah, in British Bhotan, at 
10,000 ft., and my native collectors brought it in great 
numbers from Bhotan in 1884. 
L. maitrya is a forest-haunting insect, and has exactly 
the same habits as Zophoessa jalaurida. The female is 
very rare, and I have only procured one of the sex, 
which has the markings of the fore wing more apparent 
on the upper side than is the case in the male. A male 
specimen from Moupin, in East Tibet, collected by the 
Abbé David, and sent me as LL. maitrya, is clearly a 
different species. 
