412 LYCAENIDA. RATHINDA, 
The first genus, Rathinda, Moore, is monotypic, and is found in India and Ceylon only. 
The opposite sexes in #. avzor, Fabricius, are marked very much alike, they are brown on the 
upperside, with an oblique discal white or ochreous band on the forewing, the underside very 
beautifully variegated. The male has no secondary sexual characters. 
The second genus, Horaga, Moore, contains about ten species, which occur in India, 
Ceylon, the Andaman Isles, the Malay Peninsula and Archipelago. The males are usually 
black on the upperside, the lower discal and basal areas of the forewing and nearly the whole 
of the hindwing except the margins are blue, the forewing always hasa patch of pure white on 
the middle of the disc. On the underside this patch is usually continued across the disc of 
the hindwing as a band of varying width. Some of the species have secondary sexual 
characters in the male, which others have not. 
The third genus, Catagaci/ma, Butler, contains two species only ; one occurs in India, 
Ceylon, the Malay Peninsula and Archipelago, the other so far has been found in Sikkim only, 
The male of C. elegans, Druce, is dark purple on the upperside, with narrow outer black 
borders. The female has the disc of both wings blue on the upperside, the rest of the surface 
black. The underside is most beautifully marked with numerous bands and spots, some of 
which are coloured exactly like mother-of-pearl. The other species, C, délicatum, de Nicéville, 
has the male almost entirely black on the upperside, the female is blue like that sex of C. elegans, 
the underside densely striated with yellow and black, with numerous metallic green spots 
scattered over the surface, The males have no secondary sexual characters. 
The genus Semanga, Distant, is monotypic, and occurs in the Malay Peninsula and 
Borneo. It has an extra (third) subcostal nervule to the forewing. On the underside of the 
hindwing it resembles Cafapeci/ma in having metallic markings on the anal area. The female 
sex alone appears to be known. It is unique as regards the points from which the tails of the 
hindwing arise, z.¢., each from the apex of a median nervule. 
In the next subgroup all the genera have the middle tail long and highly ciliated instead 
of thread-like, and all the genera possess secondary sexual characters inthe male. The first 
genus, Biduanda, Distant, has three subcostal nervules to the forewing, and the secondary 
sexual characters consist of a glandular patch of modified scales on either side of the base of 
the first subcostal nervule of the hindwing. The genus is found in Sikkim, Burma, the Malay 
Peninsula and Archipelago. Six species are known to belong to it. 
The next genus, Drupadia, Moore, contains but three species, two of which are, in my 
opinion, probably reducible to one. The genus occurs in Burma, doubtfully in the Nicobar 
Isles, and in the Malay Peninsula and Archipelago, They are very beautiful butterflies, 
the forewing of both sexes of the Indian species with a very broad rich orange discal 
patch, the rest of the wing black, the hindwing inthe male blue, in the female black ; 
on the underside the forewing is orange with darker bands and spots ; the hindwing is ante- 
riorly orange posteriorly white, with blackish bands and spots, and some metallic markings 
towards the anal angle. Scme of the species of the preceding genus are very similarly mark- 
ed on the underside. The forewing has two subcostal nervules only, and the male has a 
glandular patch of modified scales on either side of the submedian nervure near the base of 
the wing on the underside, below which the inner margin of the wing is outwardly bowed ; 
there is also a similiar patch of scales in the subcostal interspace of the hindwing on the 
upperside. 
The last genus of the group is Zooxy/ides, mihi, and is monotypic. Both sexes have two 
subcostal nervules to the forewing, this in the male bears a glandular discal patch of scales 
on the upperside, the inner margin of the wing straight. &. ¢haris, Hibner, is rather a 
plain insect, the upperside is dark purplish-fuscous, the forewing unmarked, the hindwing 
with some white patches towards the anal angle, the underside rich orange, the anal third 
of the hindwing white marked with black. Z. éAaris is found in Burma, and in the Malay 
Peninsula and Archipelago. 
