the genus Ypthima. 35 
40. Ypthima argus. (Pl. IL., fig. 28). 
Ypthima argus, Butler, Jour. Linn. Soc. Zool., ix., 
p- 56 (1866); Leech, Butt. China, &c., p. 90 
(philomela, var.). 
Y. baldus, Fab., apud Ster., Elwes, P.Z.S., 1881, 
p- 904; Staudinger, in Rom. Mem., vi., p. 202 
(1892). 
Mr. Leech treats this as a variety of philomela (Mar- 
shalli), but gives no reason for this, and we must con- 
sider it a perfectly distinct species, which appears to be 
confined to North-eastern Asia and Japan, where it is 
very common. Staudinger says the Japanese form is a 
variety with paler under side, but the difference is very 
trifling. 
A specimen from Hakodadi (Whiteley) in coll. Godman 
and Salvin wants the ocellus in the second median inter- 
space on the right side, and has it merely indicated by 
a faint yellow spot on the left side. 
Hab. Japan (Pryer, Leech, éc.); Amurland (Graeser, 
cc.) ; Corea (Leech). 
A specimen from Ichang in Mr. Leech’s collection is 
very puzzling, and, judging from the clasp alone, which 
we have figured under the name of Pratti, Pl. IIL, 
fig. 55, would be a distinct species. It has most re- 
semblance to argus, but the upper ocellus of the middle 
pair is absent, though on the proper right side there are 
some scales, which make us think that the specimen is 
an abnormal one in which the spot is absent. If, how- 
ever, others should be found in China showing that this 
is a normal specimen, we should be unable to treat it as 
a variety of any known species. On the upper side it 
differs from any specimen of argus that we have yet seen 
in that, being a male, it has on all the wings a dark 
marginal band of which the inner edge is sharply defined, 
and the ocellar space sharply defined on both wings. 
In order to facilitate the recognition of similar speci- 
mens, a detailed description of this insect is given below. 
3. Upper side brown; fore wing with a wide dark marginal 
band; the pale irrorate ocellar space subtriangular, reaching from 
the costa to the inner margin, its inner edge straight, oblique ; 
sex-mark wanting; ocellus large, well-defined, bipupilled; hind 
wing with a wide dark marginal band, separated from the actual 
p 
