LYCANID&. SURENDRA. 219 
soin the male; 4ind margin nearly straight. HINDWING, short, somewhat quadrate; an- 
terior margin nearly straight, afex angled; exterior margin nearly straight anteriorly, truncate 
posteriorly, and in male with one tail situated at the end of the first median nervule, in the female 
with twe tails, one at the first, the other at the second median nervule, anal lobe large. Venation 
similar to 7%aduka, Moore. [This is incorrect, the venation differs considerably]. Pali long, 
slender. Zegs short. Antexne uniformly thickened.” (Moore, 1. c. in Proc. Zool. Soc, Lond., 
1878). ‘* Type, Amblypodia quercetorum, Moore, Horsfield and Moore, Cat. Lep. Mus. E, I. C., 
vol. I, p. 42, n. 63, pl. ta, fig. 7, male (1857).” (AZoore, 1. c. in Proc. Zool. Soc. Lond., 1879). 
In the forewing of the typical species the costa is regularly arched, more so in the female than 
in the male, the apex acute, the outer margin at first concave, then strongly convex, especially so 
in the female, the inner margin slightly sinuous ; costal nervure ending opposite the apex of 
the cell ; second subcostal nervule with its base equi-distant between the bases of the first subcos- 
tal and upper discoidal nervules ; the third subcostal nervule is short, originating nearer the apex 
of the wing than of the ceil; disco-cellular nervules upright, concave, the middle a little 
shorter than the lower, given off from the upper discoidal near to its base ; lower disco-cellular 
meets the median nervure at an equal distance from the base of the second median nervule, 
as does the middle disco-cellular from the base of the upper discoidal nervule ; submedian 
nervure straight. Inthe hindwing the costa is much arched at base, then nearly straight to 
apex in the male, slightly arched in female ; outer margin in male regularly convex to tail, 
then oblique and deeply excavated to anal lobe, in the female it is concave to the base of the 
outer tail; abdominal margin excavated above the anal lobe, then convex to the base of the 
wing ; the first subcostal nervule is given off rather near to the apex of the cell; the disco- 
cellular nervules are almost straight, of equal length, and slightly outwardly oblique; the 
second median nervule is given off exactly opposite the lower end of the cell; the submedian 
nervure is straight, the internal nervure is at first straight then strongly bowed outwardly, The 
male has no secondary sexual characters, and it has a somewhat short tail at the termination of 
the first median nervule, the female possesses a second tail of equal length at the termination 
of the second median nervule. Both sexes have a very large anal lobe. The eyes are naked. 
Mr. Doherty has recently added two very interesting species (S. amisena, Hewitson, and 
S. florimel, Doherty) from Burma to this genus. The male of S, amdsena has a much shorter 
tail and a smaller lobe than in S. guercetorum, both the tails and the lobe of the female are 
also smaller, .S. florimelis still more aberrant: neither sex possesses tails or a lobe, the hind- 
wing being only toothed or angled at the apex of the second median nervule. Both these 
species are perfectly distinct and easily recognised. 
Three species in addition to the type species have been described from strictly Indian 
limits : specimens of all of them are in my possession. The distinguishing characters which have 
been given by various authors to discriminate between them and the parent form, S. guerce- 
torum, Moore, are, in my opinion, so slight and trivial—and, moreover, are such as_ would be 
likely to occur in a widely-distributed species such as is S. guercetorum occurring in great varia- 
tions of climate—that I hold very strongly to the belief that they represent but one somewhat 
variable species, which sheuld be known as S. guercetorum. Vhe form which occurs in Sikkim 
and Assam averages considerably larger than examples from South India, Ceylon, Burma, and 
the Andaman Isles. In almost all localities the hindwing is sometimes marked on the upperside 
in the male with a patch of purple in the middle: this patch is, however, sometimes absent. 
The prominence of all the markings of the underside as well as the shade of the ground-colour 
is also variable. Viewed as asingle variable species, S. guercetorum occurs almost throughout 
the outer ranges of the Himalayas at low elevations, in Assam, Burma, Orissa, Madras, Bombay, 
the Nilgiri, Shevaroy and Pulni Hills, in Trichinopoly, Ceylon, and the Andaman Isles. The 
following key simply gives the hitherto recorded localities for the different supposed distinct 
species of this group, and in the descriptions of these the habitat headings contain those localities 
only which have been recorded for them by various authors. S. amesina, Hewitson, is abundant- 
ly distinct ; the male may be known by having a smaller tail and lobe than S. geerceforum ; the 
