68 
MICROLEPIDOPTERA OE NEW GUINEA 
becoming smaller downward. Cilia silvery-wliite, faintly tinged yellowish. 
Hind wing white, suffused with pale ochreous except at base, brighter 
towards apex ; a small dark brown suffused streak in apex and on termen 
running as far as vein 5, narrow r ed below. Cilia silvery-white. 
$ 20 mm. Head, palpus, scape of antenna and thorax pale yellowish- 
whitish, apex of median segment of palpus mixed with blackish, terminal 
segment mixed with dark grey. Abdomen pale whitish-ochreous, corethro- 
gyne extremely large, fuscous. Fore wing abruptly arched at base, less 
curved but distinctly prominent at 2 / 3 , apex rounded, termen straight 
above, rounded and slightly prominent below. Legs oclneous, paler at 
base, anterior tarsi ringed with brown. Pale sulphur-yellow anteriorly, 
brighter yellow posteriorly. A narrow jet-black striga along apex and 
upper 2 / 3 of termen, very narrow and interrupted below, broadest in apex. 
Cilia concolorous, somewhat paler, with a faint antemedian line. Hind 
wing pale yellow, somewhat darker in apex, a few minute black points on 
apical edge of wing. Cilia concolorous. 
Tegumen elongate-clavate, longer than in carbonifera. Uncus strong, 
top rounded, deeper emarginate. Socius somewhat denser bristled. Gnathos 
somewhat less curved. Transtilla knob more elongate, denser dentate, 
median projection shorter. Peniculus much shorter, obliquely conical. 
Valva shorter, rounded-subquadrate. Aedoeagus with broad, long and 
stronger sclerotized point (Slide No. 314 D). 
Limen rather narrow, broadly convex, two very small lateral emar- 
ginations on each side, no lateral projections, lateral rods broad, short. 
Colliculum strong, very short, ventral split wide. Cestum broad, tortuous 
(three times), and with a median furrow, terminal fold long, broad. 
Signum moderate, capitulum long. Eighth tergite broad, rather weak 
(Slide No. 332 D). 
Moss Forest Camp, 2800 m, October 9 — November 5, 1938 (holotype); 
Moss Forest Camp, five km northeast of Lake Habbema, 2800 m, October 
14, 1938 (allotype). Two specimens. Closely allied to preceding. 
Chionothremma marginata spec. nov. (figs. 67, 74) 
$ 18 — 20.5 mm. Head and thorax whitish, touched with pale citric- 
yellow or pink, palpus whitish, touched with creamy or with faint pink, 
terminal segment in one specimen black. Abdomen whitish, corethrogjme 
bronze-greyish-brown. Legs light ochreous, tibiae suffused with brown, 
tarsi tinged brown. Fore wing moderately broad, costa curved anteriorly, 
straight posteriorly, faintly concave before apex, apex rounded, termen 
straight above, rounded beneath. Whitish, touched wit h very pale creamy- 
pink, a very faint streak on base of dorsum and a moderately broad pale 
yellowish fascia before black terminal streak dilated above, shortly 
continued anteriorly along costa and in tornus; a narrow, black terminal 
streak from apex to tornus, narrowed below, its inner edge somewhat 
suffused. Cilia whitish touched with pink, basal half black, well-defined 
