454 
AMETROPTILA. By W. Warren. 
abnormalis. 
semibrevis. 
Integra. 
tiirbinifera. 
fragilis. 
ossicolor. 
of the forewing. Hindwing as in Ametroptila, but not so small; its distal margin flawed in the centre, the anal 
angle angular, not excised; the cell-end with a rather large roundish area containing a depression with fluffy 
hair; the veins in the hindwing bent upward towards the distal margin,and thickened. In the forewing vein 
6 rises in the upper cell-angle; veins 7, 8, 9 forked, also 10 and 11 forked; 10 anastomoses with 8, 9 and forms 
an areola; veins 7 and 8 from the areola, 10 rises far behind it. Beneath between veins 1 and 2 of forewing, 
corresponding to the cell of the hindwing, a glossy area with a hollow membrane. Type: P. abnormalis Wan. 
P. abnormalis Wan. (48 f). Forewing light rusty brownish-grey; costal and subcostal marked with 
small silvery scales; a large hyaline spot behind the cell, bordered with black and then again by rusty yellow, 
at its base below vein 4 a small hyaline spot; distal line from the costa above the hyaline spot, forming the 
border of the rusty yellow margin, then straight and oblique to the hind-margin, with a light line; before 
the margin an undulating dark line forming a cloud in the sub median area; at the cell a tiny dot. Hindwing 
with a light costal-marginal area, with a light-edged median line and traces of a subterminal shadow; fringes 
of both wings black and brown. Under surface pearl-coloured ochreous, with a flesh-coloured tint; marginal 
area fawn-coloured. In the much greyer <$ the hyaline spot is much less broad, it is composed of a small 
round spot above vein 6, an oval one above 4, both of which are connected by a small hyaline crescent; 
the proximal line is marked by 2 small brown spots on each side of the submedian fold; the subterminal line 
is distinctly notched, light and lustrous, below vein 3 oblique and straight, behind it a deep brown crescent. 
Hindwing in the costal half light, below pale fawn-coloured with traces of 3 dark lines. Under surface lustrous 
ochreous. Borneo (Penungah), as well as Penang and Gunong in the Malay Peninsula. 
17. Genus: Ametroptila Wan. 
with proboscis; palpi upturned, with a distinct terminal joint. Antennae thick, with lamellae; hind 
tibiae with 4 spurs. Forewing broad, at the base strongly bent, then straight; apex slightly produced. Distal 
margin gibbous or in the middle with an obtuse knee; hind-margin convex. Hindwing small, costal margin 
strongly bent and fringed, with a roundish apical angle, anal angle angular; distal margin almost straight; 
basal half of cell transparent, its end exhibits above a tuft of curved hairs. In the forewing 7,8, 9 are forked, 
10 and 11 forked, 10 anastomoses with 8 and 9 forming an areola; in the hindwing the cell is short, all the 
veins are strongly curved, more or less parallel to the curve of the costal margin; veins 2 and 3 absent. Type: 
A. semibrevis Wan. '* 
A. semibrevis Wan. (48 f). Forewing reddish ochreous, darkened by brown, with traces of several 
brown crooked lines right across the wing; in the centre a diffuse cloudy band containing a flat spot at the 
cell-end. On the hindwing the lines are only traceable at the liind-margin; the hair-tuft in the cell of the 
same colour; costal area light. Face and palpi apically dark brown. Described from a single $ from the Poeh 
Mts. (Borneo). 
A. integra Wan. (48 f). Forewing light mouse-grey, tarnished by a darker colour, costal margin at 
and beyond the centre with dark brown scales evidently representing the oblique beginning of a median band; 
there are also traces of a subterminal band marked at the costa and above the anal angle by brown scales defined 
by blackish; small marginal spots black. Hindwing without markings, the cellular tuft rather light against 
the rest of the wing. Under surface uni-coloured light drab. Face dark brown, body otherwise drab. Described 
from a single <$ from Penang (Malay Peninsula). In this species the costa of the forewing is strongly gibbous 
near the base and the distal margin projects in the middle somewhat triangularly. 
A. turbfrlifera sp. nov. Forewing greyish fawn-coloured, from the centre of the hind-margin a narrow 
brown oblique band extends transversely, terminating in an infundiform spot behind the centre of the costal 
margin and being followed by an indistinctly marked subterminal line. Hindwing without markings. 2 $<$ 
from Pulo-Laut (North Borneo). Type in the Collection of the British Museum. 
A. fragilis Swh. Forewing lustrous pearl-grey, costal margin behind the centre lighter. Otherwise 
quite unicoloured; across the wings small silvery scales are scattered, which are only visible in a certain light. 
Distal margin darker, more glossy. Distal line darker, hardly contrasting, accompanied by small light oval 
spots; at the cell-end a red-brown streak; fringes lustrous yellow. Hindwing unicoloured grey, at the distal 
margin darker. Beneath the wings are lighter, the spot at the cell-end yellowish-white, the sexual mark on 
the hindwing surrounded with yellowish-white. Pulo-Laut (Borneo). 
A. ossicolor sp. nov. (48 f). Forewing bone-colourecl, tinted with yellowish, across the wing single 
small lustrous scales are scattered. At the cell-end and behind it a cloud of deep brown scales enclosing a 
darker spot at the lower cell-end. Subterminal line curved, between the veins marked by deep brown small 
spots; (fringes damaged). Hindwing only with traces along the hind-margin of proximal, median and subterminal 
