Publ. 20. II. 1911. 
LETHE. By H. Frutistorfer. 
313 
L. nicetas Hew., of about the size of sidonis, is easy to recognize by the broad yellow postd.iscal 
bands on the underside and a whitish oblique band of the forewing, both of which show through above. More¬ 
over, the eye-spots of the hindwing are of unequal size and transparent. Rather rare, observed at Haling in 
May and June, but distributed from Sikkim to Kulu, flying there even in October and occurring everywhere 
from 1000 to 2500 m. in dense forests. 
L. maitrya Nicev. (97 c) is the species of the group most commonly brought to Europe, which, is met maitrya. 
with, particularly in July and August, in enormous numbers, especially at the border of Sikkim and Neapel. 
The type came from the North-West Himalayas and specimens from there are somewhat larger than the Bhutan 
example figured. According to Elwes maitrya always flies in company with Zophoessa jalaurida at altidutes 
of 3— about 4000 m. 
L. visrava Moore (= deliades Hew. and figured at 97 c under the latter name) is a very rare species, visrava. 
the $ of which has the hindwing almost entirely white and the forewing likewise white to the ceil. The hindwing 
is adorned with large, free black ocelli, which beneath are broadly margined with yellow. Moreover, in the 
$ the terminal border of the hindwing is reddish yellow. The only differs on the under surface in having the 
white area on both wings more extended and more sharply defined. Flies in June. Sikkim, Bhotan. 
L. insularis Fruhst. (97 c) approaches the Chinese procne Leech (vol. 1, pi. 32 b), from which, however, insularis. 
it differs in the more rounded wings, the smaller size and. the almost vertical yellow-brown submarginal band 
of the forewing above. Beneath insularis is characterized by a beautiful moss-green tinge on the basal part 
of the hindwing, which does not show on the figure, and especially by the twice interrupted white median 
band, which runs from the costal to the anal angle and is gradually narrowed. Formosa, at about 4000 ft., ap¬ 
parently rare. 
The following Palearctic species belong to Sinchula : L. violaceopicta Pouj. (= callisto Leech ) from 
West China (vol. 1, p. 85, pi. 31 c); L. titania Leech (vol. 1, p. 85, pi. 31 c) from West China; L. helle Leech 
(vol. 1, p. 37, pi. 32 b) (hitherto regarded as a Zophoessa ), West China; L. procne Leech (vol. 1, pi 87, pi. 32 b), 
for which the same genus was accepted, West China. — L. callipteris Btlr. (vol. 1, p. 86, pi. 31 e), one of 
the most beautiful species known, distributed in Japan from Shikoku to Yesso; Moore created the genus Harima 
for it. 
Group Kerrata Moore. 
Structure and wing-contour as in Sinchula, but the forewing bears in the median area narrow, elongate patches of shaggy 
androconia. 
L. tristigmata Elw. (97 d). Upper surface grey-brown with transparent bands and ocelli and the sexual tristigmata. 
spot already mentioned. Very rare, hitherto only known from Sikkim, where it flies in July near the borders 
of Nepal at elevations of 9 — -10 000 ft. The $ was first discovered in 1888 by Moller in Native Sikkim. - 
lyncus Nicev. is in Bingham’s opinion only a paler form of tristigmata : according to the figure it is rather a lyncus. 
rainy-season form, but in the subapical spots of the forewing there are differences which perhaps justify a sepa¬ 
ration, as lyncus bears a short white band instead of five isolated dots; the basal part is also darker, the ocelli 
more fidly bordered with yellow. Niceville compares it with ocellata Pouj., which it decidedly nearly approach¬ 
es. Sikkim, only two from Native Sikkim known, which were collected in July and August at elevations 
of 7—10 000 ft. 
Two Palearctic allies: L. nigrifasciata Leech (vol. 1, p. 85, pi. 31 e), of which there is a smaller local 
race, fasciata Seitz ; West China. — L. ocellata Pouj. (= simulans Leech) (vol. 1, p. 85, pi. 31c); West China. 
Group Magula worn. nov. 
Structure as in Sinchula. Hindwing, however, with distinct tail-appendage at the lower median. No sexual spots. 
The few species belonging here have been hitherto united with Zophoessa , from which they can be at once separated by the dif¬ 
ferent position of the lower discocellular, which is formed as in Sinchula. But this group has as little'claim to subgeneric rank as 
Kerrata. 
L. jalaurida, named from the Jalauri Pass in Kulu, where Niceville met with it in large numbers 
on the red flowers of a Persicaria in the midst of dense forest at elevations of between 6—8000 ft., in company 
with Tj. maitrya. jalaurida Nicev. (vol 1, p. 87) occurs especially in the West Himalayas, but what we meet jalaurida. 
with as such in collections belongs to elwesi Moore (vol. 1, pi. 32 c, as jalaurida), which differs from jalaurida elwesi. 
in the paler colouring and the more sharply defined silver bands on the under surface. According to Elwes 
this form flies at the Nepal frontier of Sikkim from 9—12 000 ft. in July and August in open places in woods, 
rapidly circling round even in dull and rainy weather and assembling in small groups where there is any filth 
to attract them. Sometimes they also rest on bamboo and on rocks, particularly in damp weather, where 
they can be taken off with a bottle like moths. —• gelduba subsp. nov. is a local race occurring sparsely in western gelduba. 
40 
