676 
NAROSA. By Dr. M. Hereto. 
ishidae. 
ambigua. 
baibarana. 
takamukui. 
shinshana. 
nigri- 
cristata. 
argenti- 
punctata. 
erminea. 
holo- 
xanthia. 
obscura. 
aroa. 
propolia. 
niveipennis. 
rufifascia. 
N. ishidae Mats. Forewing yellowish-white, with an olive tint, costal margin broad white. An indistinct 
paler submarginal line is only visible from the costal margin to vein 3, the margin with black dots which are 
larger in its centre. Hindwing coloured like forewing. Expanse of wings: 23 mm. Tainan, Formosa, in August. 
N. ambigua sp. n. (86 b). Forewing reddish golden yellowy with the extremely indistinct and hardly 
visible marking of concinna, costal margin more whitish, with a very feeble coarse jet-black dusting behind 
the lower cell-end and in the centre of the margin. Hindwing and under surface blackish grey, with golden 
yellow fringe. Expanse of wings: 18 mm. Khasis, in May. type in the Tring Museum. 
N. baibarana Mats, is very similar to ishidae, but smaller, forewing ochreous, with some brown spots 
in the basal half below' the cell; veins ochreous. Hindwing paler than forewing. Expanse of wings: 20 mm. 
Horisha, Formosa, in August. 
N. takamukui Mats, likewise resembles ishidae, but it is easily discernible by the silky gloss of the 
wings. Forewing yellowish-white, a large yellowish spot beyond the cell, blackish scales beyond the lower 
cell-angle. Margin with black dots, those at the apex and tornus larger. Hindwing lighter, with blackish scales 
at the apex. Expanse of wings: 24 mm. Ivagi, Formosa, in April. 
N. sliiiishana Mats. Fore wing ochreous, with white bands; antemedian and median bands distinct 
at the cell, postmedian line indistinct, somewhat paler than the ground-colour, strongly kneed at the submedian 
fold. Submarginal band strongly excurved, not reaching the inner margin. Terminal band broadest at the 
apex, narrowing down towards the tornus, with some dark scales in the interspaces. Hindwing paler than 
forewing. Expanse of wings: 22 mm. Shinsha, Horisha, Formosa, in August. (It may be identical with corusa.) 
N. rsigricristafa sp. n. (86 b) Body white, 4 tufts on the thorax and one on the abdomen as w r ell as the 
apex of the abdomen are black. Forewing white, slightly tinged with brownish, basal quarter brown, containing 
a black dot, a black dot at the lower cell-end, above the mouth of veins 2 and 7. Beyond the cross-vein there 
is an indistinctly defined brown subapical band. Hindwing wiiite, apex and interior angle with black dots. 
Under surface white, base of costal margin and a spot beyond the cross-vein brownish. Expanse of wings: 
25 mm. Formosa; in May. £ type from Tamorin (Berlin State Museum). 
N. argentipunctata Hmps. (= narcha Swh.). <$ wiiite, with a yellowish tint. Forewing with a tuft of 
yellow scales at the base, some yellow at vein 12 and the cross-vein, an indistinct reddish-yellow band from 
the costal margin beyond the centre to the margin below the apex. At the lower cell-angle a silvery white 
dot, the margin with black dots. Expanse of wings: 28 mm. Ceylon, Kanara, in July. 
N. erminea Hmps. (86 b). White, forewing with a blackish shadow at the base of the costal margin, 
with a broad blackish-brown transverse band in the centre, connected with the similarly coloured apical 
portion and containing single black dots. A white dot at the anterior cell-angle, a large black dot behind the 
posterior cell-angle. Hindwing dusted with blackish at the margin, especially at the apex. Costal-marginal 
half of fore wing beneath black, with an ochreous costal-marginal spot. Expanse of wings: 18 mm. Burma. 
N. Isoloxan.thia Hmps. (86 c). Light orange reddish-yellow, forewing dusted somewhat reddish, hindwing 
paler. Expanse of wings: 24 mm. Khasis. The cross-vein between 8 and the cell of the hindwing is situate here 
close before the cell-end. 
N. obscura Wil. is near to holoxanthia, forewing pale brown, dusted with dark brown, with 2 blackish 
spots in the disc, one in the cell and one below it, the latter oblique. Hindwing whitish-brown, with a darker 
tint. Body brown, mixed with grey. Expanse of wings: 22 mm. Kanshirei, Formosa, in April and September. 
N. aroa B.-Bah. Body reddish-yellow, abdomen grey, with a reddish anal tuft. Forewing reddish 
ochre, with more and more rosy red scales in the centre. Hindwing pale greyish ochre. $ greyer, without the 
rosy red central area of the forewing, but with a fine dark postmedian line. Expanse of wings: 18—23 mm. 
New Guinea. 
N. propolia Hmps. Body golden yellow^ with a reddish tint. Forewing yellow, suffused with copper- 
red, costal-marginal and basal areas suffused with white. A pale line excurved from the posterior angle of the 
cell, then dentate to the inner margin, another line from the costal margin beyond the centre, bordered inside 
with reddish-yellow, obliquely to vein 4, then subterminally and somewhat dentate, margin with dark dots. 
Hindwing golden yellow. Expanse of wings: 24 mm. Sikkim. (4 and 5 of forewing on a short stalk. 10 stalked 
with 7—9, thus evidently not belonging to this genus.) 
N. niveipennis sp. n. (86 c). Snow-white, forewing with a brown transverse blotch across the cell-end 
to the costal margin, and a brown transverse line from % 0 f costal margin, strongly bent distally as far 
as vein 7, where it is blackish and shaded with blackish towards the margin, then strongly incurved to the 
posterior cell-angle and from there somewhat undulated almost vertical to the inner margin. Two black 
marginal dots each below the apex and above the tornus. Hindwing white, with a greyish-brown longitudinal 
blotch between 1 c and 1 b. Under surface white, apical area of forewing blackish. Expanse of wings: 16 mm. 
Khasis, in June, July. $ type from Shillong in the British Museum. 
N. rufifascia sp. n. (86 c). Palpi short, somewhat longer than the diameter of the eye. Thorax whitish- 
grey, collar and abdomen reddish-brown. Forewing whitish-grey, with a narrow reddish-brown basal area, 
a dark dot at the lower cell-end and a very broad brownish-red subapical band intermixed and bordered with 
