PINGASA. By L. B. Prout. 11 



which appear likely, from the figures, to belong to it are unknown to me in nature. I have erected it for 

 a few species of similar structure to Actenochroma and Herochroma but with the second subcostal vein of 

 the forewing arising from the cell — an ancestral character which in this subfamily is otherwise only re- 

 tained in four primitive Australian genera. The species are chiefly Indiaii. The colour of the upperside 

 is usually moss-green, mixed with reddish or purple. In some species the hindwing is greatly elongate and 

 dentate, and these usually have the under surface variegated, a broad dark band traversing both wings 

 before the distal margin. A few species have more normally shaped hindwing, and sober grey underside. 



A. sinapiaria Pouj. (3c), is described as of a pale mustard green finely sprinkled with brownish, distal sinapiaria. 

 margin (especially of hindwing) dentate, with dark lunules between the teeth, postmedian line acutely den- 

 tate on the veins, sinuate between the third radial and the medians, followed by slight blackish shading, 

 and this again by a submarginal series of greenish brown spots; forewing also with a strongly dentate ante- 

 median line. Under surface yellowish white with some broad blackish shades in distal part. A single fe- 

 male from Mou-pin. 



A. crassipunctata Alph. (Ig), described as a Gnophos, would seem from the figures to be a near crassi- 

 relative of usneata Feld., hypoglauca Hmpsn. and farinosa Warr. — the group of Archaeobalbis with less v^nctata. 

 elongate hindwing and nearly uniform underside. It is described as cinereous brownish, the hindwing, espe- 

 cially at base, strigulated with grey, a waved brownish postmedian line, dotted with fuscous on the veins, 

 and an interrupted dark marginal Une. Underside yellowish- white, sparsely irrorated with grey, and with 

 a very large black discal spot on each wing. The figure shows further on the upper surface a series of 

 reddish intraneural blotches on both wings, distally to the postmedian line, and a much smaller, more lu- 

 nular submarginal series. Turkestan: Aksai. 



2. Genus: Piiigasa Moore. 



Palpus with third joint in $ long. Antenna rather long, in ^ bipectinate, but with a long apical 

 portion simple. Abdomen with paired crests. Hindwing elongate, especially in $, crenulate but without 

 any strongly projecting teeth. Forewing with first subcostal vein usually free; hindwing with costal ap- 

 proximated to cell near base, then diverging very sharply, second subcostal arising from cell, some tufts of 

 raised scales on upperside on and behind the discocellulars. A very natural genus, widely distributed in the 

 Indo-Austrahan and Aethiopian Regions, but scarcely spreading into the Palearctic. The facies is very uni- 

 form, the general coloration whitish or grey (very rarely green) the distal area, at least on the under surface, 

 more or less strongly darkened. The larva seems to be allied to Pseudoterpna. 



P. pseudoterpnaria Guen. (= pryeri Butl.) (If). Smaller and greyer (tinged with brown) than most pseudo^crp- 

 of its allies, the distal area not appreciably darker on the upperside than the rest of the wing. Under sur- waria. 

 face white, the proximal part (at least on forewing) more or less dusted with grey, both wings with large 

 cell-mark and rather- broad submarginal band, which on the forewing generally spreads to the margin in the 

 middle of the wing and sometimes posteriorly, but always leaves a clear, white apical patch. Japan to western 

 China, apparently in two generations. Scarcely distinguishable above from the Indian tephrosiaria, which 

 is Ukely a local race of it, but which has the base of the underside clearer white and the submarginal band 

 often narrower. 



P. alba Swinh. (1 e). Variable in colour, from clear white to a brown-grey like that of the prece- alba. 

 ding, but very distinct in its thick deep-black postmedian line, not dentate, but sending out short rays 

 distad along the veins. Under surface without distinct white apical patch. Japan, N. China and Assam. A 

 rather large and very handsome species. The Japanese form seems to be usually, though not invariably, greyer 

 than the Indian. 



P. lahayei Ob. (1 g) somewhat suggests on the upperside a miniature grey specimen of alba but lahayei. 

 with a less regular postmedian Une ; beneath, the distal area of the forewing shows a blackish patch at 

 the costa, that of the hindwing small patches about the second radial and second median veins. Only known 

 from North Africa. 



