Full. 5. VIII. 1913. 
DIPTERYGIA. By W. Warren. 
121 
S. apiciplaga Warr. (15e). $ Forewing purplish black in costal half of wing, reaching to sub- apiciplaga. 
median fold; an oblique white streak from base of costa along vein 1, followed above by a black triangle 
before inner line; inner margin below the white streak greenish grey, beyond inner line dull rufous 
dusted with fuscous; cell black; orbicular and reniform leaden grey, the latter outlined in white, follow¬ 
ed by a pink streak to outer line; outer line white just below costa, then dentate Emulate, filled up 
with greyish fuscous and pink; a white roundish spot at apex tinged with pink; subterminal line ill-defined, 
pinkish, preceded and followed by black streaks and dashes; fringe fuscous and pinkish, pale pinkish 
at apex; hindwing fuscous, the fringe pale. Smaller than oenistis and without the vinous tint. Kei 
Island. 
S. itlterrupta Warr. (15e). Resembles Imcorina Hmps. and olivaria limps, in both sexes, but interrupta 
certainly distinct. The is larger, with pale ochreous ground colour; an oblique black streak above inner 
margin before inner line; the cell black before and beyond orbicular stigma, which is grey, small and quadrate; 
reniform inwardly brown, outwardly diffuse and jagged; outer line, instead of showing the strong 
curve beyond cell, always interrupted by olive brown and pale horizontal stripes and by the black veins; 
a pale streak from reniform along vein 5, continued beyond subterminal line to termen; $ with the broad 
white streak from base cut by the dark median line, beyond which the streak is narrower; the pale 
streak on vein 5 beyond subterminal line is always present; and, as in the the outer line is inter¬ 
rupted, but in this case by the pale ground colour from the apex; hindwing olive fuscous, darker in $ 
than <$. New Guinea. 
S. basiplaga Warr. (15 e). Forewing very much like that of interrupta, but smaller, more uni- lasiplaga. 
formly grey brown; the veins finely black, and the intervals streaked with dark; a small blackish blotch 
at base of inner margin, and an oblique black streak above it before inner line, which is strongly den¬ 
tate, pale edged with black; orbicular stigma annular, with brown centre, white ring, and black out¬ 
line; reniform ill-defined, outwardly diffuse, followed along vein 5 by a pale streak running beyond sub¬ 
terminal line to termen; $ whitish ochreous, tinged with olive green; the costa dark in basal half and be¬ 
fore subterminal line, and the terminal area from above anal angle to middle; the base of cell with 
a wedge-shaped black mark; hindwing fuscous, darker in $ than in $. Occurs in the Khasia Hills, As¬ 
sam; Waigieu, and New Guinea. Perhaps a form of tenebrosa Moore. 
S. longiplaga Warr. (15f). $ Forewing greyish ochreous slightly tinged with pale brown; the longiplaga. 
veins finely black; costa tinged with olive and marked with pairs of short oblique dark strigae; the 
costal blotch before subterminal lii\e olive grey with only the narrower end above vein 7 blackish; a fine 
black streak from base below cell; an oblong blackish fuscous blotch from inner line to termen includ¬ 
ing cell and space below it, beyond subterminal line comprising a pale streak on vein 5; orbicular 
pale, roundish; the reniform obscure and undefined; before the oblong dark blotch and beneath the outer 
end of the black basal streak a short white streak; hindwing dark fuscous with the fringe pale. Found 
in Sikkim, the Malay peninsula, Penang and Gunong Ijau; the example from the latter locality larger 
and browner; also from New Guinea, the upper Setekwa River and near the Oetekwa River. 
8. Genus: IMpterygia Stph. 
Tongue well-developed; frons smooth; palpi upturned, the second segment broad, rough-haired, 
not reaching vertex of head, the third short; antennae of $ ciliated; abdomen with slight dorsal crests, 
that on second segment larger; femora and pectus woolly; forewing narrow, the termen slightly excised 
towards tornus; inner margin sinuous, convex near base, with a slight scale tooth at anal angle. Larva 
on low plants, pupating in a subterranean cocoon. Type D. scabriuscula L. 
D. kebeae Beth-Baker (15f). Forewing brown suffused with leaden fuscous; the costal area kebcac. 
brownish at base, white and brown towards apex; on inner margin a pale ochreous streak from near 
base contiguous to a broader patch beyond outer line, curved above at vein 2 and reaching termen 
at vein 3; inner line indistinct, interrupted, marked on costa by two slight striae and by a long tooth 
above inner margin; outer line indistinct, oblique from costa to 6, angled outwards on vein 1, emitting 
a curved diffuse blackish fascia to termen above the white patch; subterminal line scarcely marked, 
with slight dentate black marks inwardly and dark streaks in the interspaces; claviform stigma faintly 
defined by black at end; the orbicular and reniform defined by black, the former small and round, the 
latter whitish-edged above; fringe fuscous in costal half, white and brown towards anal angle; hincl- 
wing whitish, the terminal area broadly fuscous. Occurs in the Kei Islands, Kiriwini, Fergusson Id., New 
Guinea, and Queensland. 
D. babooni Beth.-Baker (15 f). Forewing whitish more or less completely suffused with rufous, labooni. 
the veins with fine dark streaks; an oblique black streak above inner margin before inner line, which 
