MICROLEPIDOPTERA OF NEW GUINEA 
149 
thorns above, anellus erect, bristled, vinculum, a slender ring. Aedoeagus 
large, sinuate, cornuti a sheaf of spines, and a huge thorn with dilated base. 
Ovipositor lobes rather narrow. Limen a broad, little sclerotized band. 
Colliculum strong, long, with a split in dorsal wall. Ductus bursae moder- 
ately long, wide, strongly flattened, cestum a moderately sclerotized, 
strongly flattened tube. Signum very strong; possibly it is formed by the 
blade of the usual cacoeciine type of signum but without the capitulum, 
fused together with a strongly folded terminal plate of the cestum. Bursa 
copulatrix moderate, subspheroid. 
Key to the Papuan species of Tlirinco'phora 
1. Males 2 
Females 4 
2. Dot on upper angle of cell small, mostly conspicuous, pure white; if this dot 
connected with tornus, then this connection darker coloured than dot itself 
archboldi spec. nov. 
Spot on upper angle of cell large, not purely white, connected with costa and 
termen, these connections of the same colour as spot, not darker .... 3 
3. Spot on upper angle of cell moderate, smaller than patch of ground colour 
which connects this spot with tornus; basal area suffused with fuscous, darker 
than tornal area leucotorna spec, nov., 
Spot on upper angle of cell large, almost as broad as patch connecting this with 
tornus; basal area less suffused, not noticeably darker than tornal area. . . 
ostracopis Meyrick 
4. Hind wing with apical half distinctly retinate with greyish -fuscous, but not 
suffused with light fuscous -brownish ; large species: 32—35 mm 
archboldi spec. nov. 
Hind wing faintly retinate on apical half, this retination obscured by a distinct 
fuscous-brownish suffusion, extending almost to base of wing; smaller species: 
27 — 29 mm 5 
5. Dark markings in disc dark grey and blackish, much contrasting with whitish 
ground colour leucotorna spec. nov. 
Dark markings in disc grey (except blackish suffusion below spot on end of 
cell), little contrasting with greyish ground colour . . . nebulosa spec. nov. 
Thrincophora archboldi spec. nov. (figs. 187, 192, 193) 
$ 26 — 28 mm. Head with vertex whitish mixed with dark greyish- 
fuscous, face dark fuscous-grey, lower third white. Palpus dark greyish- 
fuscous, median segment mixed with white scales, especially towards 
apex, terminal segment more mixed with white. Antenna dark brown, 
finely ringed with light ochreous, cilia light ochreous, scape dark fuscous. 
Thorax dark fuscous, or whitish-fuscous, with more or less distinct suf- 
fused lateral white spots anteriorly, posterior half white, tegula deep 
ferruginous. Abdomen whitish, infuscated posteriorly, clothed with 
rough long scales, anal tuft white. Legs ochreous, suffused with fuscous 
above, except on articulations, anterior tibia and tarsus dark ferruginous - 
fulvous, the latter white-ringed. Fore wing elongate-triangular, costa 
moderately curved throughout, apex rounded, termen straight, and 
almost vertical above, rounded beneath. Greyish-whitish, suffused with 
