312 
PHOT OSCOTOSIA. By L. B. Prout. 
indecora. 
tonchigne¬ 
aria. 
albiplaga. 
albomacu- 
laria. 
albapex. 
hostmutata. 
rivularia. 
amplicata. 
dejeani. 
line near the costa of the fore wing and the whitish costal markings which succeed it. $ much darker than 
Gurais (type series) and Gulmarg, Kashmir. Quite similar, mostly very large specimens from Kharta, Tibet. 
12 000 feet (A. F. R. Wollaston, Everest expedition of 1921) are in the British Museum collection. 
49. Genus: Pliotoscotosia Warr. 
(See Vol. 4, p. 202; Suppl.-Vol. 4, p. 103.) 
A handsome group of large, ample-winged sjDecies, the typical section so unmistakable, with its glossy 
scaling, the hindwing not continuing the pattern of the forewing but usually with a whitish (sometimes bright 
orange) costal or apical region, that it is scarcely necessary to consult its generic characters. These, however, 
are very homogeneous. Palpus moderate, somewhat roughened. Antenna of $ shortly ciliated. Forewing with 
areole double; posterior part of the wing in d 1 with specialized scaling beneath and distally somewhat truncate, 
a large spreading pencil of hair arising behind the median vein near its base. Hindwing with costal region ex¬ 
panded. especially in the <§, cell short, discocellulars highly oblique, costal vein, after moderate anastomosis 
with the cell, diverging very steeply. Belongs chiefly to the Himalayas and the mountains of Tibet and West 
China, but extends to Turkestan, Japan and Formosa and one species is known from Java. 
Ph. indecora sp. n. (31 e) should perhaps form a separate section, the d hair-pencil being considerable 
shorter than the normal. Wings slightly more elongate than in fulguritis. Forewing with antemedian forming 
an acute projection at each fold; postmedian waved, with a sharp tooth inward at 5th subcostal, but with 
an only very slight double prominence between 1st radial and 2nd median; subterminal with the interneural 
shallow lunules well isolated; an oblique whitish line from apex to postmedian much as in fulguritis-, minute 
pale terminal vein-dots. Hindwing, even in the d> almost wholly dark, the fringe (but scarcely the wing) 
lightened with pale buff at apex; whitish subterminal line and (fainter) postmedian discernible, especially in 
the $. Underside also dusky, forewing with a whitish apical spot; hair-pencil light, tinged with buff. Tibet, 
at 12 000 feet: Kharta, at light, 30 July 1921 (G. H. Bullock), type d; Kama Valley, 27 August 1921 (A. F. R. 
Wollaston), allotype $; both collected on the Everest expedition of 1921. The allotype, which we figure on 
account of its fresher condition, has a small white central patch (as in some amplicata) which is undeveloped 
in the d- 
Ph. tonchignearia Oberth. (31 e) (Vol. 4, pi. 9 h, $; Suppl.-Vol. 4, pi. 10 e, d)- Somewhat variable, as 
our two figures show, in the white midcostal patch, which may be clear or more or less dark-lined and irrorated, 
usually clearest in the dd- — ab. albiplaga Prout (Vol. 4, pi. 6 1, as bicolor) is the extreme of the latter form, 
the clean and well-defined white patch recalling that of dejeani. — tonchignearia is common in W. China and 
Chinese Tibet. Leech had a d from “Sultanpore, Kulu”. 
Ph. albomacularia Leech (Vol. 4, pi. 11 g). Dark borders much broader, both above and beneath. As 
the wings seem slightly more elongate, it can scarcely be an extraordinary aberration of tonchignearia. Type 
d from Omei-shan, no others known. 
Ph. albapex Warr. (31 e). Forewing almost as rounded as in bicolor-, an oblique white or light-buff band 
from costa to 1st median, in the dd 1 clear, in the $$ irrorated with the ground colour. Hindwing blackish, with 
a very characteristic apical patch. Sikkim, at 12 000 feet and upwards; also from Yatang, Tibet. 
Ph. hostmutata Prout (Suppl.-Vol. 4, pi. 10 e), erected as a potential subspecies of amplicata, has the 
hindwing less pure white than in tonchignearia, the distal border less sharply defined proximally, the abdominal 
region more broadly suffused. In its larger size, the truncate tornus of the forewing, more strongly black hair- 
pencil and the presence of a postmedian line on both wings beneath it certainly belongs to the group of forms 
with which I associated it. Described from How-kow, Chinese Tibet, known from several localities in Szechuan. 
Ph. rivularia Leech (Suppl.-Vol. 4, pi. 10 d). Forewing more variegated and richly marked than in the 
rest of the group, postmedian line broader and more conspicuous, apex beneath less whitened. Hindwing with 
a rather broad dark border. Fringes chequered. Omei-shan. 
Ph. amplicata Walk. (31 f) ( = trisignata Moore) (Vol. 4, pi. 6 1). Walker's type was a $ from “Hin- 
dostan", Moore’s a $ from “Bengal”, but the sexes do not differ materially except that the hindwing in the 2 
has only the costal region (about to the subcostal and 1st radial) white. The white on the forewing is somewhat 
variable, but usually shows, in addition to the postmedian vein-dots and traces of lunulate subterminal, a 
row of 3 confluent or separated spots from midcosta. Himalayas from Kashmir to the Khasis, perhaps chiefly 
Sikkim. Some Kashmir aberrations make a close approach to dejeani, which may be its Chinese race. 
Ph. dejeani Oberth. (31 f) (Vol. 4, pi. 6 1). On the whole larger, the dark parts more black-mixed, the 
midcostal patch purer white and broader, not tripartite, Szechuan, locally abundant. 
