60 
MICROLEPIDOPTERA OF NEW GUINEA 
halfway to cell. Cilia snow-white. Hind wing at base whitish in male, in 
female pale grey, in both sexes gradually turning blackish posteriorly, 
cilia snow-white. Fore wing with underside suffused blackish on apical 
third, inner edge of this suffusion very oblique, and narrowly suffused 
along costa; hind wing below suffused only along apical fifth or less. 
Tegumen clavate, base rather narrow. Uncus with broad base, top 
rounded. Socius, a moderate patch of sparse, irregularly scattered bristles. 
Gnathos strong, hook broad, rather short. Transtilla knob moderate, 
S-shaped, dentations decreasing in size laterally, median projection 
moderate. Peniculus rather long, clavate, base moderate. .Juxta strong, 
ventral edge rounded and projecting ventrally. Vinculum narrowed 
below. Valva short, broad, almost spheroid. Aedoeagus with top obtuse 
(Slide No. 356 D). 
Limen narrow, Lateral emarginations moderate, lateral projections short. 
Colliculum short, strongly sclerotized. Cestum very broad, strongly 
tortuous, terminal fold broad, short. Signum robust. Eighth tergite 
forming a ring around ovipositor (Slide No. 357 D). 
Rattan Camp, 1200 m, February 19, L939 (holotype). Mist Camp, 
1800 m, January 11, 1939 (allotype), January 17, 1939. One male, three 
females. Closely allied to delia Meyrick, but distinct by the colouring of 
abdomen and of cilia in the fore wing. Also closely allied to the preceding 
and to the following species. 
Chionothremma nebulicola spec. nov. (figs. 45, 51) 
$ 20 mm. Similar to preceding, but with thorax below and femora and 
tibiae blackish, suffused with white, abdomen dark ochreous above, 
orange-ochreous beneath, tip dark bronze-grey above, corethrogyne 
darkly coloured (damaged). Hind wing darker grey-blackish towards 
apex. Fore wing below suffused with blackish on terminal and costal 
third, hind wing below entirely suffused, except in middle of disc. 
Limen narrow, lateral emarginations moderate, lateral projections 
rather short, broad. Colliculum moderate. Cestum long, narrow, corru- 
gated longitudinally, tortuous, with a large terminal coil; terminal fold 
broad, short. Signum small. Eighth segment moderately sclerotized 
(Slide No. 358 D). 
Mist Camp, 1800 m, January 17, 1939. One specimen. Closely allied to 
the preceding. 
Chionothremma auripcs spec. nov. (fig. 42) 
S 24 mm. Head and palpus rather bright fulvous-ochreous, face white, 
terminal joint of palpus darker fulvous. Antenna with scape fulvous- 
ochreous, flagellum blackish, white-ringed. Thorax snow-white, anteriorly 
narrowly edged with fulvous-ochreous and faintly suffused with pale 
yellow. Abdomen grey-whitish anteriorly, tinged ochreous posteriorly, anal 
tuft whitish-grey and ochreous; venter light fulvous-ochreous, preanal 
