87 
OPISTHOTIA; OSTEOSEMA; HEMICHLOREIS. By L. B. Peout. 
48. Genus: Opistliotia Wan. 
Another one-species genus, agreeing nearly with Chlarodes in palpus, antenna, shape and venation 
of hindwing and a few other characters, but essentially different in that the 2nd subcostal arises far distally 
to the 5th; thus its true affinities are perhaps with the Rhomborista group. Abdomen crested. Hindtibia 
of dilated. 
0. tumidilinea Moore (11a). Quite distinct in the markings as well as in its structural characters, tumidili- 
Only known from Sikkim, the 9 apparently not yet discovered. 
49. Genus : Osteosema Wan. 
Here are grouped together a few not very closely related species in which the antennae in both sexes 
are rather short and pectinated. Palpus rather slender, the 3rd joint short in both sexes or moderately elongate 
in the $ only. Abdomen not crested. Hindtibia of $ not dilated. Forewing (except in Section C) with the ven¬ 
ation normal. Hindwing with the anal angle pronounced, sometimes ( pastor ) slightly produced, recalling that 
of the preceding genera; 2nd subcostal and 1st median both stalked. The species, excepting the anomalous 
Section C, are N. Indian. 
A. Pectinations short; $ palpus with 3rd joint short ( Osteo.sema). 
0. pastor Btlr. (11a). Distinguishable from sanguilineata (11a) by its more Chlorodes- like shape, pastor. 
which misled Butler into placing it in that genus. It was described from Darjiling, but is found also in the 
Khasis. 
0. sanguilineata Moore (11 a). Hindwing with distal margin scarcely bent in the middle, the broad sangui- 
purple submarginal line more regularly curved, the green postmedian one not forming a broad patch between hneata. 
the radials. Found in the same localities as ; pastor , also in Nepal. 
B. Pectinations in both sexes longer; $ palpus with 3 rd joint rela¬ 
tively long ( Ghlorostrota Wan.). 
0. alboviridis Moore (= albiviridis Hmpsn., $ = praeampla Wan.) (10 e). Hindwing bent at 3rd alboviridis. 
radial. Forewing with costal margin much more mixed with red-brown than in the two preceding; both wings 
with the white postmedian line much less bent, subterminal of forewing green, of hindwing far from distal margin, 
almost obsolete, leaving an extended whitish area beyond. ,,N. E. Bengal" — Sylhet and the Khasis, very rare. 
C. Forewing with 1st subcostal anastomosing with costal, 2nd sub¬ 
costal arising beyond 5th (gen. div. ?). 
0. discata Wan. (10 i). Hindwing more angled than in sect. A, but sect. B is intermediate. Maculation discata. 
more Anisozyga- like. The $ has the 3rd joint of the palpus rather short, the pectinations moderate. N. Borneo 
and Sarawak. — bertguetensis subsp. nov. Forewing with cell-spot slenderer, patch at hind end of postmedian bengue- 
larger, almost entirely without dark shading distally; hindwing beneath without dark apical spot, which is tensis. 
well developed in the type race. Luzon, subprovince Benguet: Klondyke, 800 feet (type <$ and a smaller ab. 
with less angled hindwing); Palali, 2000 feet, 1 $; — province Rizal: Montalban, 1 $. Collected by Wileman. 
50. Genus : Hem!cliloreTs Turn. 
Face smooth. Tongue well-developed. Palpi moderate, porrect; basal and 2nd joints shortly rough- 
haired beneath; terminal joint short, obtuse. Antennae in <$ bipectinated, apices simple. Thorax not crested, 
beneath not hairy. Abdomen not crested. Femora not hairy. Posterior tibiae in <$ not dilated. Hindwings without 
costal expansion at base; frenulum and retinaculum in <$ well-developed. Forewing with 1st subcostal from 
cell, running into costal, 2nd subcostal out of 3rd, 5th short-stalked with 1st radial, 3rd radial and 1st 
median short-stalked. Hindwing with costal approximated to cell near base, rapidly diverging, 2nd subcostal 
short-stalked, 3rd radial and 1st median connate (according to Goldfinch stalked). 
H. exoterica Meyr (<$ = theata Turn.). $ 19 mm, $ 29 mm. Face reddish-brown, upper and lower exoterica. 
edge snow-white. Forewing with costa straight to near apex, apex pointed, termen sinuate, oblique; bright green, 
with an ochreous-brown subcostal streak; markings dark reddish-brown; cell-mark ocellated; a short, erect 
mark from middle of hindmargin; a broad, straight-edged terminal band, containing a green subapieal blotch. 
Hindwing rounded; cell-mark similar; terminal band without subapieal blotch. New South Wales. Unknown 
to me. 
