106 
MICROLEPIDOPTEKA OP NEW GUINEA 
longitudinal greyish-fuscous spot occupying less than basal fifth of costa, 
edge well-defined, anterior half with an invert-trapezoid dilatation reaching 
to base of fold, beyond this edge horizontal, posterior margin inwardly 
oblique, somewhat irregular; apical and terminal fifth of wing fuscous- 
purple with bluish gloss, with edge running from beyond 4 / s of costa to 
dorsum before end of fold, bluntly projecting in middle, preceded by dark 
fuscous irroration which forms denser, inwardly oblique transverse 
patches : along upper third of this edge and across purple area before its 
anterior extremity; this extremity preceded by a small dorsal dot of 
blackish-fuscous scales; purple area obscured by dull fuscous suffusion 
along costa, in apex and along termen, extending opposite middle of the 
latter so as to occupy about the middle third of the purple area. Cilia pale 
fuscous, a group of dark fuscous scales on basal half opposite middle of 
termen, another such group, darker and larger, forming a raised tuft on 
dorsum before end of cilia. Hind wing fight greyish-purple, cilia dull pale 
ochreous-fuscous. 
Ostium, a narrow slit at each side supported by a long plate; these 
plates connected ventrally with each other, each with a long slender 
projection laterally and a row of minute bristles at the top. Ductus bursae 
simple. Bursa copulatrix upturned, with emarginate distal extremity, 
signum a large plate with a sinuate edge and two pointed projections 
below. (Slide no. 1090 D, type.) 
Rattan Camp, 1200 m, March 4, 1939. One specimen. Nearest to 
O. gluphyra Diakonoff, 1948, from Buru, differing by the narrower wing, 
the paler ground colour and by the absence of a dark fuscous transverse 
fine at three-fourths of the fore wing. 
Opogona nephelodesma spec. nov. (fig. 819) 
vsrpeArj = cloud, dea/xog = band 
18 mm. Head pale fuscous, vertex fuscous, face fuscous-whitish, no 
fillet, a smooth flap of scales over frons and face, making the former some- 
what prominent. Antenna fuscous, scape elongate, pale straw-fuscous. 
Palpus moderately long, little curved, median segment blackish-fuscous, 
terminal under 1, pale fuscous mixed with darker. Thorax pale straw- 
colour, anteriorly and on shoulder fuscous. Abdomen pale straw-colour. 
Legs pale ochreous-fuscous, anterior leg suffused with dark fuscous, poste- 
rior tibia with long fine appressed hairs above, projecting in a pencil 
beyond apex, shorter fine hairs below between pairs of spurs which are 
covered with fine appressed bristly hairs, tarsus bristly below. Fore wing 
ovate-lanceolate, costa gently curved, more so towards extremities, apex 
acute, moderately produced. Pale golden-straw-colour, faintly glossy; 
markings brownish-fuscous, suffused. A moderate, much suffused fuscous 
basal patch, edge indefinite, on dorsum slightly extended posteriorly, on 
costa with a suffused blackish-fuscous attenuated streak; an inwardly 
