MICROLEPIDOPTERA OF NEW GUINEA 
151 
with white throughout. Hind wing white; with veins 3 and 4 stalked. 
Cilia white, tinged with pale greyish. 
Ostium surrounded by a membraneous, subdentate fold. Ductus bursae 
broad, cylindrical, finely granulate, lower half narrow, membraneous. 
Signa moderate, apical plate elongate. (Slide No. 865 D, type). 
Lake Habbema, 3250 — 3300 m, August 26, 1939. One specimen. Allied 
to H. episacta Meyrick, from Ceylon. 
Heterogymna xenochroma spec. nov. (fig. 529) 
(evoq = strange, yow/ua = colour 
(J 19 mm. Head white. Palpus moderate, whitish, blackish-fuscous along 
basal half. Antenna whitish, flagellum ringed with fuscous. Thorax pale 
ochreous, suffused with dark leaden-grey, apex dark leaden-grey, shoidder 
with a black dot. Abdomen whitish, venter blackish, anal tuft large, light 
ochreous. Legs whitish, anterior leg suffused with dark grey. Fore wing 
with veins 8 and 9 short-stalked, veins 3 and 4 separate; costa gradually 
slightly curved throughout, apex subacute, very narrowly elongate, little 
dilated, terrnen slightly sinuate, oblique. Dark leaden-grey, somewhat 
glossy, darker anteriorly, markings blackish, (fiscal edged with pale 
ochreous. Basal patch narrow, with margin straight, oblique, edged with 
pale ochreous; basal third of patch black, elsewhere it is pale-ochreous, 
with posterior edge faintly suffused with blackish, with a minute median 
horizontal black streak; small suffused elongate-ovate costal dots: first 
largest, beyond 1 / 4 , four other dots from before middle to just before apex, 
second and last dots larger, elongate; two small round tufts of raised 
scales in disc beyond 1 / 6 : at 1 / 3 and 2 / 3 of wing breadth, respectively, pale 
ochreous, in centre mixed with blackish ; two rounded black, light-edged 
dots somewhat obliquely below costa before middle, a third similar dot 
above fold a little beyond first subcostal; a transverse, slightly oblique 
light-edged black streak on discoidal vein from below costa not reaching 
fold; a faint brownish discal transverse suffusion before this streak, 
from below costa reaching to dorsum; another suffusion preterminal, 
somewhat oblique, from costa and apex, reaching 3 / 4 across wing; a row 
of short blackish streaks along terminal edge to tornus. Cilia whitish, 
suffusedly barred with dark grey, on costa with dark fuscous, except on 
base. Hind w'ing with vein 2 from middle, veins 3 and 4 stalked ; fuscous- 
greyish, paler anteriorly, cilia grey with tips and base whitish. 
Tegumen truncate, lateral folds bent ventrad, each ending in a strong 
point. Uncus, a slender, clavate, pointed hook. Valva narrow, hardly 
dilated towards base, cucullus rounded, base of costa with a slender 
projection haired at top, ampulla a curved tooth at 1 / i and an oblique row 
of short papillae, each ending in a bristle. Vinculum elongate, triangular. 
A long slender bipartite furca present. Aedoeagus spoon-like, with dilated 
top. Cornuti, a submarginal wreath of bristles. (Slide No. 838 D, type). 
