COLLECTED AT SARAWAK. 187 
Male. Cinereous. Head, thorax, and fore wings slightly tinged with 
wood-colour. Palpi ascending; 2nd joint hardly stout, very slightly 
curved; 3rd elongate-conical, hardly one-fourth of the length of the 
2nd. Antenne stout, serrated; the teeth pubescent. Thorax with a 
brownish band. Abdomen witha small apical tuft. Legs slightly pi- 
lose, not fringed. Wings with black marginal points. Fore wings with 
a brown basal mark ; interior, exterior, and submarginal lines brown, 
slight, zigzag, the latter accompanied by a cinereous line; orbicular 
and reniform marks brown, irregular. Hind wings whitish. Length 
of the body 7 lines; of the wings 16 lines. 
Fam. ORTHOSIDA, Guén. 
Gen. THALATHA, n. g. 
Mas. Corpus robustum. Proboscis distincta. Palpi ascendentes, sat 
graciles, subarcuati, ad frontem applicati; articulus 3"* lanceolatus, 
2' dimidio brevior. Antenne nude. Abdomen cristatum, alas pos- 
ticas vix superans. Pedes breviusculi, sat validi; tibiee subfimbriatz. 
Ale anticz apice subrotundatz, costa recta, margine exteriore convexo. 
Male. Body stout. Proboscis moderately long. Palpi rather slender, 
ascending, slightly curved, applied to the front; 3rd joint lanceolate, 
less than half the length of the 2nd. Antenne simple. Abdomen 
crested, hardly extending beyond the hind wings. Legs rather short 
and stout; tibize slightly fringed; hind tibize with four long spurs. 
Wings moderately broad. Fore wings somewhat rounded at the tips; 
costa straight; exterior border convex, slightly oblique. 
242, Thalatha sinens, Walk. Cat. Lep. 3rd ser. 746 (Orthosia). 
Var. Fore wings with an irregular angular olive-coloured band, whose 
hind part is very oblique. 
Gen. Barpnsorza, n. g. 
Mas. Corpus robustum. Proboscis distincta, Palpi porrecti, eom- 
pressi, caput superantes ; articulus 2" latus; 3"° minimus. Antenne 
longze, graciles, vix pubescentes. Abdomen subcarinatum, alas posticas 
vix superans, fasciculo apicali parvo compresso. Pedes valid; tibia 
intermedi penicillate. Ale antice apice rotundate,; costa recta, 
margine exteriore convexo. 
Male. Body stout. Proboscis distinct. Palpi porrect, compressed, 
extending beyond the head; 2nd joint broad; 3rd extremely minute. 
Antenne long, slender, very minutely pubescent, Abdomen slightly 
keeled, hardly extending beyond the hind wings; apical tuft small, 
compressed. Legs stout; tibiz dilated; middle tibize furnished at 
the base with a fan-shaped tuft of hairs which equal the tibie in 
length; hind tibie with four spurs of moderate length. Wings mo- 
derately broad; fringe long. Fore wings somewhat rounded at the 
tips ; costa straight; exterior border convex, moderately oblique. 
13* 
