MICROLEPIDOPTERA OP NEW GUINEA 
23 
disc, rather ill-defined, narrowed and twice interrupted above, broadest 
above dorsum, lower extremity curved outwards; a very faint indication 
of pale interneural dots in a straight row before termen. Cilia blackish- 
fuscous with a narrow pale basal line and a blackish antemedian fascia. 
Hind wing greyish-fuscous, becoming paler anteriorly, darker suffused 
along margins. Cilia darker greyish-fuscous with a dark fuscous ante- 
median fascia and a sharp fuscous-whitish basal line, towards tornus 
these fines fading out. 
Tegumen semimembraneous, bluntly pointed. Uncus and gnathos 
absent. Transtilla, a weak, slender and long, curved rod. Vinculum short, 
rounded. Valva concave, cucullus rounded, dorsally with a broad blade, 
a pointed basal projection directed basad, ventrally with a short acute 
point, sacculus rather broad, simple. Anellus a long rising plate, constricted 
above middle, top dilated, crowned with two blunt bristly knobs. Aedoea- 
gus rather long, moderately sinuate towards apex, with a thick subapical 
thorn. Cornuti, an elongate patch of short spines. Coremata absent. 
(Slide no. 1044 D, type.) 
Mist Camp, 1800 m, January 10, 1939. One specimen. Distinct by the 
inwardly oblique transverse streak. 
Imma atrotacta spec. nov. (fig. 743) 
£ 18 mm. Head, palpus dark fuscous-grey. Antenna fuscous, scape dark 
grey. Thorax dark fuscous. Abdomen fuscous, anal tuft blackish mixed 
with pale ochreous. Legs whitish-fuscous, suffused with blackish-fuscous 
above, posterior leg with fuscous-grey, apex of anterior femur and rings 
on all tarsi pale ochreous. Fore wing with veins 7 and 8 stalked; elongate- 
subtriangular, costa curved at base, moderately rounded-prominent 
beyond middle, apex rather rounded, termen hardly curved, little oblique. 
Pale ochreous, anterior 4 / s densely suffused, cloudy, and irrorated with 
dark violet-fuscous, posterior fifth irrorated with dark fuscous. A dark 
grey suffused streak along anterior 4 / 5 of costa, an ill-defined pale-ochreous 
transverse mark across its middle ; a suffused violet-black large transversely 
ovate spot along closing vein, a smaller irregular mark of blackish 
irroration above and beyond it and an ill-defined streak of this colour 
along fold, dilated so as to form a transverse spot above dorsum before 
tornus ; an obscure fight ochreous transverse mark on costa before apex, 
separated by a dark fuscous-grey blotch from a small pale spot in apex; 
a pale ochreous outwardly oblique transversely ovate spot in disc before 
termen below apex, rather ill-defined. Cilia fuscous-grey with darker 
subbasal shade. Hind wing greyish-fuscous, on basal half becoming paler 
and thinly scaled. Cilia fuscous-grey, with a darker subbasal fascia and a 
minute pale basal fine. 
Tegumen weak, erect-ovate. Uncus, gnathos, transtilla absent. Valva 
large, dilated, cucullus with a dense patch of bristles; sacculus 3 / 4 , narrow, 
