LETHE. By H. Frith storeer 
319 
me in Tenasserim at the end of the dry season at about 4000 ft., is smaller than Icansa kansa, is above still 
paler brown, but beneath more sharply marked than the Sikkim race, and with the ground-colour almost white- 
grey. The ocelli of the hindwing are about midway between those of Sikkim and Assam Flies in May. 
L. vindhya Fldr. (98 b) only differs above from the preceding in the $$ showing an indistinct yellow- vindhya. 
brown median longitudinal band. Shape of wings also somewhat more rounded, tails shorter, ocelli larger, 
dolopes Hew. is the dry-season form of the species, recognizable by the lighter colouring of the under surface and by dolope *. 
some of the ocelli being smaller. Very rare in Sikkim, Assam and Bhutan. Flies at elevations of about 1200 m. 
August, September. — ladesta subsp. nov. is likewise a small race, analagous to kansa vaga from the same district, ladesta. 
Above with the ocelli scarcely half as large, under surface essentially darker than in vindhya. Eye-spots of the 
forewing absent, but hindwing with very distinct, although small, apical and anal ocelli. Tenasserim. Very 
rare, always only found singly. 
L. serbonis Hew. (98 b), previously only known from Sikkim, received by me also from Bhotan in a form serbonis. 
with somewhat darker under surface, is local and not very common; it is said to fly in the wet season, June 
to September, during which it is to be met with in dense forests at elevations of about 7—9000 ft. Upper 
surface uniform brown with slight bronzy reflection, ocelli of the under surface only showing through slightly, 
the anal one with distinct white pupil. Wings nearly quadrate, tails very short. A $ before me from Bhotan 
bears beneath very broad cocoa-brown areas and the submarginal band, is twice as strongly developed, as in the 
cJcJ. On the other hand the median brown longitudinal band of the forewing is absent in the $. — davidi Oberth. davidi. 
(vol. 1, p. 83, pi. 30 b), in my collection from Mupin, is a geographical branch, from West China, flying in June 
and July at about 8000 ft., whose relationship with serbonis Leech has already emphasized, flavofasciata Leech flavofas- 
is probably the dry-season form of the $ of davidi. data. 
L. sinorix Hew. (98 b) is a graceful species of elegant shape, easy to recognize by the sinuate forewing, sinorix. 
the long, pointed tails and the broad, sharp, brown-red, almost rectilinear, parallel longitudinal bands of the 
under surface. Upper surface with three yellowish, subapical patches on the forewing and a reddish, moderately 
extended submarginal area on the hindwing. Ocelli black, much, larger than beneath. $ with the hindwing 
almost entirely light red and the yellowish longitudinal band of the forewing paler, sinorix is very constant, 
examples before me from Sikkim, Bhotan, Assam and Cachar do not vary at all. Very rare in Sikkim, it is more 
commonly taken in Bhotan. Elies from July to September. Dr. Manders found it also in Bernardmyo, Upper 
Burma, at 7000 ft. 
L. samio Dbl. & Hew. is doubtless the Javan representative of the preceding species. Before my samio. 
visit there, East India was recorded as its habitat. Even in Java very local and rare, occurring exclusively at 
Mt. Gede at 4—6000 ft. It differs beneath chiefly in the elbowed., instead of straight distal band of the forewing. 
The $ is without the white, or more often yellowish subapical patches above, and. the $ bears a very broad 
band, on the forewing, composed of three longitudinal patches of unequal size. 
L. satyavati Nicev. is beneath somewhat similar to crijnana (98 c) and. with the ocelli of the same satyavati. 
form, but without the white band of the forewing and of a pale grey-brown colour. Upper surface brown with 
the distal area but little lighter. Hindwing with small black dots in the ocelli, which show through from the 
underside. Only 2 $$ known, which give quite the impression of an extreme dry-season form. Assam. 
L. mekara is more widely distributed and much more variable than has been supposed. The species 
is more subject to Seasonal dimorphism than the Lethe hitherto dealt with and. almost always occurs together 
with chandica Moore. The two may easily be confused., especially as their dry-season forms are really very 
similar. But the under surface affords a safe distinguishing character in the distal band of the hindwing being 
but little excurved. in mekara. — mekara Moore was described from Darjeeling, where it flies from the lower mekara. 
valleys up to about 1500 m. from March to November in bamboo thickets, and. when chased takes refuge among 
the foliage, when it is difficult to detect. Upper surface of the Jc? as in crijnana, except that the submarginal 
red on the hindwing is somewhat lighter and more extended. $ with light red upper surface to the wings and 
more extended white oblique band on the forewing, otherwise as in sumati.Q (98 d), under surface similar to that 
of crijnana (98 c), but lighter and with much broader, glossy white median longitudinal bands, vajra form, vajra. 
nov. is the unusually different spring generation (March, April), of which I have examples before me which 
show no markings at all on the underside of the wings and in which the uniform sand-brown ground bears only 
indistinct longitudinal bands. Together with it occurs an intermediate form, in which only the eye-spots are 
reduced, but distinct brown and whitish bands are still present. Moore also knew this form and figured it as 
the dry-season form of mekara. — zuchara subsp. nov. chiefly differs in the $ in the deep red-brown ground- zucham. 
colour of the upperside of the wings, the darker and more broadly brown median areas of the underside and their 
more conspicuous silvery whitish distal bordering. Moreover the ££ are somewhat more richly coloured beneath 
and the spring generation does not produce such, extremely small examples as in mekara mekara. Assam, 
crijnana subsp. nov. (98 c), collected by me in Tonkin in August—September, forms a transition to the hitherto crijnana. 
unnoticed Macromalayan races in the almost complete absence of the distal silvery bordering of the very narrow, 
