ARCTIADH AND NOCTUIDA FROM FORMOSA. 169 
double, slightly wavy, elbowed below middle; postmedial line dusky, 
double, irregular; a dark triangular mark, partly outlined in black, 
on costa; traces of a black medial line set in a brownish cloud below 
triangle; subterminal line blackish, undulated, dentate below costa, 
preceded on costa by a conspicuous black mark; slender black 
lunules on termen, fringes dark. Hind wings fuscous with traces of 
a darker discoidal mark. Under side whitish powdered with brown 
except on the dorsal areas ; a blackish discoidal mark on each wing, 
and traces of a dusky postmedial line on the hind wings. 
Expanse, 20 millim. 
Collection number, 1387. 
A male specimen from Kanshirei obtained April 29th, 1908. 
Appears to come near H. isomera, Hampson. 
SARROTHRIPINE. 
Nanaguna sordida, sp. n. 
Head white, palpi pale brown; thorax pale brown flecked with 
paler. Fore wings pale brown clouded with darker on medial and 
terminal areas; antemedial line blackish, indented below costa and 
before termen; postmedial line elbowed beyond end of cell thence 
gently incurved to dorsum, white with black inner edge, most distinct 
towards dorsum; reniform stigma pale brown enclosing blackish 
lunule; a black line on termen ; fringes pale brown with darker line 
before the tips. Under side fuscous, hind wings and dorsal area of 
fore wings paler. 
Expanse, 16 millim. 
Collection number, 555. 
One female specimen, Tainan, June 13th, 1905. Comes near 
N. basalis, Moore. 
ACONTIANE. 
Westermannia obscura, sp. 0. 
3. Head white, antennze brown, white at base; thorax and 
abdomen brownish grey, the former rufous tinged. Fore wings 
purplish grey inclining to brownish on the terminal area; costa 
(narrowly) and dorsal area, from base to postmedial line, pale brown 
slightly rufous tinged; a somewhat conical brown spot in the cell 
near its outer extremity, and a larger spot below it, both outlined 
in whitish ; postmedial line whitish, excurved from costa to vein 5, 
thence onwardly oblique to dorsum ; a brown spot before the tornus 
outlined in whitish; subterminal line blackish, wavy. Hind wings 
pale brownish outwardly suffused with dusky. Under side pale 
brown suffused with blackish, except on the costal area of the wings ; 
two pale dots at end of the cell on fore wings. 
Expanse, 34 millim. 
Collection number, 174. 
Two male specimens from Kanshirei, March, 1908. 
This species is very close to W. superba, Hubn., from which 
it is chiefly distinguished by the more slender spot at end of cell, 
the gently curved not elbowed, postmedial line, and the general 
dingy coloration. 
