414 COL. C. SWINHOE ON NEW [Nov. 5, 
close together; and a broad blackish discal band, sinuous inwardly, 
suffused outwardly towards the outer margin, and including a 
sinuous whitish line, a black spot in the centre of the antemedial 
line; orbicular represented by a black dot, reniform by a suffused 
large blackish spot, outer margin with black points, fringe steel- 
grey. 
Hind wings white, a broad black outer border, attenuated hind- 
wards, and without the usual anal whitish streak in the band: 
abdominal border suffused with grey, marginal line brown, marginal 
points black, fringe pure white. 
Underside greyish white; tarsi brown, with whitish bands; wings 
nearly white, with a broad blackish marginal band on each wing, 
diffused outwardly to greyish on fore wings, and to pure white on 
hind wings ; fringe and marginal points as above. 
Expanse of wings 2,2; inches. 
Hab. Rangoon, June 1888. One pair of this fine species 
received from Mr. Noble. 
This is a larger insect than P. guenavadi, the wings being com- 
paratively longer; the fore wing has similarly disposed markings, 
but these are more widely separated. The hind wing is less qua- 
drate in form, the outer margin more rounded, and the marginal 
black band is broader at its upper end. 
OPrHIUSIDS. 
OPHTUSA TRIANGULATA, n. sp. (Plate XLIII. fig. 5.) 
Blackish brown, bands and lines white ; fore wings with a central 
erect band slightly contracted in its centre, and irrorated with black 
atoms ; from the lower extremity of this band on the hinder mar- 
gin a thick line runs straight to the centre of the outer margin 
(but does not touch it), and is angled from thence straight to the 
costal margin, near to but a little apart from the central band, thus 
forming a complete and very prominent triangle; there is also a 
fine sinuous submarginal line from the hinder margin to the apex 
touching the elbow of the triangle ; the submarginal space is paler 
coloured, and many of the veins are streaked with white, especially 
so near the outer margin ; marginal festoon and points black ; cilia 
grey, interlined. 
Hind wings with a white fascia slightly before the middle, a thin 
white streak at the anal angle, and a thin white border; marginal 
line black ; cilia grey. 
Underside pale dirty greyish brown, with indistinct antemedial, 
medial, and postmedial grey bands, a submarginal sinuous pale line ; 
outer margin thinly pale greyish ; marginal festoon and points black ; 
cilia grey. 
Expanse of wings 155; inch. 
Hab. Karachi, July 1886. One perfect example taken. 
Nearly allied to Ophiusa mirabilis, Romanoff, Mém. Lép. ii. pl. 4. 
fig. 5 (1885), from Transcaucasia. 
