separata. 
simulata. 
dlbiflexura. 
rectisecta. 
thalpophi¬ 
loides. 
major. 
dissimilis. 
156 DATA. By W. Warren. 
base and traces of a dark outer line. Found in N. W. India and Kashmir; the smallest species of the 
genus. 
0. separata Moore (18 i). Forewing olive grey brown dusted with fuscous, and in parts with fuscous 
suffusion; lines black, double, filled in with whitish ochreous; inner line strongly angled outwards on 
subcostal vein and inwards below it, vertical from median to vein 1, then forming a distinct lunule 
outwards; outer line lunulate dentate, incurved below middle, the dark outer arm followed by an olive 
brown line; subterminal line yellowish white, waved, preceded and followed by dark olive fuscous shad¬ 
ing; the veins beyond middle finely white; claviform stigma black edged; orbicular and reniform olive 
rufous at centre with white annuli; the orbicular narrow and elongate, oblique; the reniform indented 
on outer edge; a dark crenulate outer line; fringe with pale line at base; hindwing greyish luteous 
with dark cellspot and veins and paler outer and submarginal lines. From Sikkim only. 
0. simulata Moore (18 h). Resembles separata Moore but larger and paler; the fuscous suffusion 
not so pronounced; the veins all more distinctly pale olive yellow; the lines and stigmata filled up 
with pink, and the edges of stigmata less white; the orbicular much more elongate; the inner line with 
the lunule on inner margin less prominent: binding rather darker. Also from Sikkim. The largest species 
of the genus. 
0. albiflexura Walk. (18 h). Very near separata Moore, of which it will probably prove a form: 
it differs in having the rufous olive line beyond outer line expanded into a band; the line itself indented 
beyond cell and incurved, not oblique, below middle; the terminal area in both wings greyer and paler; 
the veins not paler, and the orbicular stigma shorter and broader. The type, a $, is marked India only; 
a single <$ in the Tring Museum, from the Elwes collection, was taken in July 1885 by D. Roy, 10 000 
feet, at Tonglo, Sikkim, a pair of separata being taken at the same time and place in 1886. 
33. Genus: Datin Walk. 
Tongue well developed; the frons rounded; palpi upturned, the second segment broad, the third 
smooth and slender, pointed; antennae of <$ ciliated; thorax slightly crested; dorsum with series of 
crests; pectus woolly; in the $ the middle and hind tibiae are heavily tufted with hair and the first 
segment of the hind tarsi is fringed with hair; forewing with apex acute, the termen crenulate, the 
teeth at veins 4 and 6 more prominent; the anal angle bearing a tooth of scales; hindwing yellow with 
dark border; neuration normal. Type D. thalpophiloides Walk. 
D. rectisecta Warr. (18 h). Like thalpophiloides Walk. (18 i), but smaller; the yellow of the hindwing paler; 
the terminal border broader, blackish fuscous, not red brown; its inner edge straight across wing not 
insinuate at middle, curved inwards only just below costa; in callopistrioides Moore it is also straight, 
but in that species the veins of forewing are pink. Cachar, India; W. Java. 
D. thalpophiloides Walk. ( = cuprea Moore, delineata Moore) (18 i). Forewing olive brown, dusted 
with ochreous-or rufous-grey, and with patches of dark suffusion; the veins finely rufous; the 
lines fine, yellowish, edged with blackish; the inner angled outwards below costa, then strongly outcurved 
from subcostal vein to inner margin; outer line bent out below costa, strongly outcurved between sub¬ 
costal vein and submedian fold, then vertical, strongly indented above vein 4; followed by a band 
of ochreous dusting; submarginal line indistinct, except from costa to vein 6, where it is marked by 
lustrous blue scales; large black terminal lunules tipped with bluish grey; claviform stigma small, black- 
edged, produced backwards before inner line; the middle of the space between subbasal and inner lines 
with a black spot on each side of vein 1; similar black spots along middle of central area indicate a 
median shade; orbicular stigma V-shaped, open above, not touching median vein below, its edges rufous; 
reniform with inner edge rufous, the outer double, produced at each end, with two white dots at lower 
end; fringe with pale line at base; hindwing pale yellow with broad rufous brown terminal border; fringe 
with pale basal line and pale tips. The type of thalpophiloides from Sarawak, Borneo; also from Java 
and Sumatra, and from Singapore; recorded also from Ceylon and the Andamans. The subsp. major 
subsp. nov. (18 i) differs from typical examples of thalpophiloides from the Malay peninsula and Java in being 
a third larger; the outer line is more prominently projecting at middle towards termen; beyond the sub¬ 
terminal line there is a patch of bluish white scales at costa diffused to termen, and bluish white scales 
are sprinkled along termen to the anal angle. Setekwa River, Snow Mts., Dutch New Guinea. 
D. dissimilis spec. nov. (18 i). Resembles thalpophiloides, but differs as follows; the inner and 
outer lines are white instead of yellow; the inner bluntly excurved between median vein and inner mar¬ 
gin; the outer excurved from 8 to below vein 1, then bent outwards, not indented on either fold; 
space before inner line filled up with dark; orbicular stigma with sinuous edges, pointed at both ends, 
