LYCAENIDA. YASODA, 441 
species, which has a very wide range, being found in Sikkim, the Chittagong Hill Tracts, Burma, 
the Malay Peninsula, and Borneo, A. /apithis, Moore, is a very small but beautiful species, the 
male more or less blue on the upperside, richly coloured and marked on the underside. 
The genus Sithon, Hiibner, which occurs in the Malay Peninsula and Archipelago, is 
highly aberrant, as it has only two subcostal nervules to the forewing, and the male hasa 
tuft of hairs attached to the inner margin of that wing and turned under and forwards. The 
male of the type species, S. zedymond, Cramer, is of the richest and most glorious blue on 
the upperside, having but few rivals in this respect. The underside is marked somewhat as in 
Tajuria jalindra, Horsfield, and allies, and Chavana mandarinus, Hewitson. 
The next two genera, Deuwdorix, Hewitson, and Zinasfa, mihi, have the anal lobe to 
the hindwing large, and the tail in both sexes short and filamentous. The first genus is 
probably monotypic, the male is red on the upperside, the margins black, the female is fuli- 
ginous above. WD. efzjarbas, Moore, has a wide range in the Indo-Malayan region, occurring 
almost everywhere. The second genus, Zizaspa, mihi, contains but two species, which are 
very closely allied, and are found in Sikkim, Assam, Burma, and Southern India only. Both sexes 
are blue or purple on the upperside, dull brown inconspicuously marked on the underside. 
In the second subgroup of the Deudorix group all the genera possess secondary sexual 
characters on the wings in the male, the hindwing invariably bearing a round depressed or 
cup-like space on the upperside of the hindwing below the costa, which is correspondingly raised 
on the underside. This peculiar “‘male-mark” is strictly confined to this subgroup of genera. 
The subgroup may again be split up; the first genus, Hyszdra, Moore, not possessing a tuft of 
hairs on the forewing near the base of the inner margin turned under and forwards, this being 
found in all the other genera. ysudra contains but a single species, which is confined to the 
Western Himalayas. Both sexes are fuscous on the upperside, the forewing with a discal, 
the hindwing with a marginal orange patch. 
The next genus, Rapala, Moore, is a very large one, and appears to be strictly confined to 
the Indo-Malayan region. The tail to the hindwing is short and filamentous, as it is also in the 
genera Vivachola and Sinthusa, Moore, which follow. These three genera can be distinguished 
in the male by the size and position of the ‘“‘scale-mark” on the hindwing ; in Rafa/a it does not 
extend into the discoidal cell, in Virachola and Sinthusa it does so. The species of Rafala are 
either blue, purple, or red on the upperside, often very richly glossed with a different shade 
of blue or purple in some lights. 
The genus Sindahara, Moore, contains four species, which are confined to the Indo-Malayan 
region, They are all remarkable butterflies ; the hindwing is furnished with a very long tail 
which is highly ciliated and broad at its base, ochreous in the male, white in the female. The 
male is very deep velvety black on the upperside, and two species have a patch of blue on the 
outer margin of the hindwing. The females are smoky-black on the upperside, with a large 
patch of white towards the anal angle of the hindwing. 
The next two genera of the group are Virachola and Sinthusa of Moore ; they have the tail 
short and filamentous. Vzrachola contains up to the present three species only, which occur in 
India, Ceylon, and the Andaman Isles. The markings of all of them are very similar to those 
of Deudorix epijarbas, Moore, and like that species the larvz of two of them feed on different 
fruits. They are all more or less blue or purple on the upperside. They are of rather large size, 
The last genus of the group, Si#thusa, Moore, may be known by the butterflies being of 
much smaller size than in Virachola, Moore, and in the forewing the middle disco-cellular ner- 
vule arises a little beyond the base of the upper discoidal cell instead of exactly at the base of that 
vein as in that genus, The males are always more or less blue on the upperside, the females are 
smoky-black, with no blue coloration, sometimes with a discal orange or ochreous-white patch 
on the forewing, the hindwing usually more or less white towards the anal angle. The genus 
occurs in the Himalayas, Assam, Burma, the Malay Peninsula, and in Sumatra and Java, 
