MICROLEPIDOPTERA OF NEW GUINEA 
59 
February 17, ]939; February 26, 1939 (kolotype). Three males, one female. 
Allied to pythia Meyrick and to the two following species. The costal fold 
is shorter and broader than in ochricauda, spec. nov. 
Chionothremma gracilis spec. nov. (figs. 49, 55) 
$ 21 mm. As preceding, but with abdomen dark grey, scattered and 
edged along posterior margin of segments with white; apical segment 
with a pale yellow tuft with white base. Fore wing with costa very narrowly 
edged with black in middle, broader towards extremities, yellow suffusion 
on termen reduced to faint traces between triangular terminal spots, a 
large tooth in apex on vein 7, other dentations smaller, narrow, connected 
along edge of wing; venter white, corethrogyne large, dark bronze-grey. 
Legs with coxae and femora whitish, tibiae brownish, mixed with white, 
tarsi whitish, dark brown above. Cilia snow-white, around apex with grey 
basal half. Hind wing brownish-grey, darker towards apex. Cilia snow- 
white, with grey basal scales around apex, grey on dorsum. 
Limen, a moderately broad plate (much narrower than in obscura, 
spec, nov.), lateral emarginations broader, lateral projections moderate. 
Colliculum moderate, with strong wall, lower edge with a Y-shaped 
emargination. Cestum broad, tortuous, terminal fold very broad and long. 
Signum long, narrow. Eighth segment forming a dorsal collar around 
ovipositor (Slide No. 361 D). 
Baliem Camp, 1700 m, November 16 — 27, 1938. One specimen. Distinct 
by the colouring of the abdomen and the grey scales on cilia. 
Chionothremma ochricauda spec. nov. (figs. 39, 48, 54) 
o 1 7 mm, $ 19 — 21 mm. Head and palpi pale yellow, the latter with 
terminal joint in male black, in female dark fuscous, drooping. Thorax 
white, with anterior fourth pale yellow above and beneath, meso and 
metasternum ochreous-tinged. Abdomen pale creamy-ochreous, venter 
darker ochreous, basal segment whitish, anal tuft in male pale ochreous- 
whitish, brightly shining, preanal segment suffused with blackish-brown 
below; in female top of abdomen blackish-brown above, corethrogyne 
shining greyish -ochreous. Legs pale-ochreous, anterior femur pale yellow. 
Fore wing with costal fold to 2 / 5 , inner edge gradually curved throughout, 
shortly ciliated beyond middle; costa rather abruptly curved anteriorly, 
apex rounded, in male termen somewhat rounded; in female straight along 
upper third, rounded beneath. Snow-white; costal edge in male narrowly 
greyish-black, more distinctly so beyond costal fold; posterior two-fifth 
of costa edged with jet-black, this edge dilated posteriorly (altogether 
absent in female); black triangular dots on ends of veins 8 — 3, in male 
narrowly connected along termen , except the last one ; in female elongate 
on base of veins 10 — 9, triangular on veins 8 — 3, along termen less 
distinctly connected with each other than in male; in both sexes dark 
markings preceded by yellow suffusion on veins, posteriorly not reaching 
