the genus Ypthima. 31 
similis, notwithstanding the difference in the shape of 
the fore wing and clasp; the colour and ocellation of 
the under side show exactly the change that similis 
ought to exhibit under such climatic influences as exist 
in the place and season in which affectata occurred. 
Group IV. 
Species of moderate size. Ocelli normally 5 (in the 
type of Prattii, 4 only), but sometimes 6 by subdivision 
of the anal one; in the latter case, however, the species 
may always be known from those of the Marshalli group 
by the anal pair being practically in line with those next 
above them. 
TABLE OF SPECIES. 
1 (4). Fore wing of 3 with the ocellus obsolete or wanting 
on the upper side. 
2 (3). No submarginal dark line on under side of fore 
wing ie oe we ae bts Be Ole SUNG ALAe 
3 (2). Under side of fore wing with a distinct submarginal 
dark line .. : .. 38. avanta. 
4 (1). Ocellus well defined on both surfaces of fore wing 
in both sexes. 
5 (6). A very distinct post-median nearly straight dark 
brown transverse line on under side of hind wing 39. striata. 
6 (5). No distinct transverse nearly straight dark brown 
line on under side of hind wing .. 
7 (10). Inner boundary of the ocellar space on the upper 
side of fore wing in the g undefined. 
8 (9). Marginal dark band on upper side of fore wing in 
the g , when present, not darker on its inner 
edge .. ee oe dia ae .. 40. argus. 
9 (8). Marginal dark band on upper side of fore wing in 
the g darker and sharply defined on its inner 
edge .. ee ae : = Humei. 
10 (7). Inner boundary of the ocellar space on the upper 
side of fore wing in the g straight, oblique, and 
sharply defined .. OF se ac 36 Prattii. 
37. Vpthima singala. (Pl. L, figs. 26, 26a). 
Ypthima singala, Felder, Verh. zool. bot. Gesellsch., 
Xvili., 283 (1868); Moore, Lep. Cey. 24, pl. xii., 
figs. 8, 3a, ¢; Marsh. & de Nicé., Butt. Ind. 1., 
p- 230; Doh., Jour. As. Soc. Beng., lv., pt. i., 
p- 120 (1886). 
Neither sex of this species is distinguishable on the 
upper side from avanta, Moore, and below it somewhat 
