172 
APITHECIA; PIERCIA. By L. B. Pbottt. 
polygramma. 
obliquilinea¬ 
ta. 
viridaici. 
divergens. 
mononyssa. 
pellet. 
albifilaia. 
C. polygramma limps. (16 d). Described as a “ Eubolia" (Ortholitha ), this has the venation of Gataclysme 
and slenderly pectinate <§ antenna. A pretty species, darker and much more sharply marked than obliquilineata , 
termen and lines less oblique. $ a good deal smaller than Kashmir. 
C. obliquilineata Hmps. (Vol. 4, pi. 13 m). The distribution of this species extends to British Bhutan. 
It recalls an overgrown Mesotype virgata. Pectinations a little longer and less slender than in polygramma. 
63. Genus: Apitii eci«i Prout. 
(See Vol. 4, p. 266.) 
• 
Since this genus was first published, much attention has been given to a number of other related Laren- 
tiine species which were formerly wrongly placed or have only more recently become known. None, however, 
seem to be strictly congeneric with viridata, although Sterneck provisionally associated mononyssa with it; 
see the following genus. To my original account one small correction and some amplification are desirable. 
The discocellulars are not merely “oblique” (by which would be assumed the Xanthorhoe form) but have the 
2nd radial arising appreciably behind the cell-fold, so that I now classify them with the “weakly biangulate”. 
The A genitalia, though having (small) 7th-segment coremata, have no calcar (nor other special development 
of the central area), a more strongly developed subscaphium and a complex saccus such as I have seen in no 
other species. 
A. viridata Moore (Vol. 4, pi. 13 e). The type locality is Darjiling and the N. E. Himalayas seem to be 
its head-quarters. But the Nilgiris and Tonkin have been added to its range and the Formosan form has been 
recognized as a separable race. 
63a. Genus: SMercfa Janse. 
Abdominal crests, though complete, generally somewhat less large than in Apithecia. Antenna of <$ 
very seldom fully pectinate, oftenest merely bidentate or biserrate, with fascicles of cilia, sometimes nearly 
simple. Venation somewhat variable, the areole at times (especially in the African species) undivided, the 
discocellulars of the hindwing varying from scarcely to quite markedly biangulate. The A genitalia seem to 
preclude union with Apithecia-. saccus normal; valve with highly chitinized costa and (frequently) ventral part; 
from near the base of the valve there arise very characteristic papillae, which support slender curved spines, 
the number varying (1 to 4) according to the species. Founded on a number of African species, the genus is 
already known to include a few Indian and Chinese and no doubt others await detection. 
P. divergens Btlr. (Vol. 4, pi. 11 i). This was erroneously referred to Xanthorhoe (see Vol. 4, p. 227), but 
the crested abdomen and the general resemblance to A. viridata should have prevented this error and the geni¬ 
talia prove it to be a true, though fully pectinate Piercia. Occasional greenish forms can still be distinguished 
superficially from viridata by their less bright colour, paler central part of the median band, dark subbasal 
instead of basal band and less white hindwing. 
P. mononyssa Prout (16 d). Still more closely similar in superficial appearance to A. viridata, but easily 
distinguishable in the A by the antenna, which has the joints very slightly projecting and bearing fine cili- 
ation of about the length of the diameter of the shaft. The $$ of the two are sometimes hard to separate, though 
the hindwing of mononyssa is more brownish than that of viridata ; the median band and the subterminal spots 
between the radials are on the whole less solidly dark. Described from a long series from Upper Burma, but 
has also been recorded from Omei-shan and Kwanhsien (perhaps only in the following form?). - pella form, 
nov. Darker on both wings than the name-type, the forewing with a conspicuously clear green, somewhat 
whitish-mixed subapical spot. Pehlinting, 6000 feet, 60 miles N. N. W. of Chengtu (G. M. Franck), 4 $$ in 
my collection. Although the A is unknown, there can scarcely be any doubt about the species; probably a 
valid subspecies. 
P. albifilata sp. n. (16 d). Larger than mononyssa (28—29 mm). Forewing perhaps relatively somewhat 
broader; median area whitish or quite pale, excepting the narrow brown stripe at each side, these stripes rather 
well defined, also faintly bisected by a dark line; cell-mark rather large and conspicuous; post median edged 
clistally by a conspicuous white thread (much more regular than the white of mononyssa ); pale streak from apex 
less broadened at the subterminal than in pella, the fuscous shading behind it extended; fringe (as also on bind¬ 
wing) rather paler, the dark marks at vein-ends conspicuous. Hindwing more uniformly coloured than in mono¬ 
nyssa , but not so dark as in pella. Chinese Tibet: Tchang-kou, type $; Ta-ho, 1 $; 6—8 days’ journey N. W. 
of Ta-tsien-lu, 1 $; type and paratypes in the British Museum. 2 from Kunkala-shan and 1 from Ni-tou, 
with darkened median area, agree with this in size as well as in the hindwing and perhaps a few other details, 
but are more likely another species or a giant race of mononyssa — perhaps an indication that albif ililata is only 
