the Mopalocera of the Ml. Everest 1921 Expedition. 4G9 



mens, including some from other sources in the B.M., show 

 them to be on the wing in that area throughout June and 

 July. Chinensis seems only to have been taken in June, 

 the above locality being the most western so far recorded. 

 It was also taken at Gyangtse by the Tibet Exp. (1903), 

 so its range w^ell overlaps that of the other two. 



SATYEIDAE. 



Argestina, gen. nov. 



Closely related to Erebia and Callerebia, having some of the 

 characters of both. In appearance resembling more the former 

 than the latter. 



Antennae f the length of costa, delicate, the club very broad 

 and spatulate, short, arising rather abruptly. Palpi large, very 

 hairy, as usual in this group. Tibiae and tarsal joints all 

 spiny, but not conspicuously, the last tibial spine the most 

 prominent on each leg. Wings, in shape, resembling more Erebia. 

 Fore-wing costa arched, but not nearly so much as in Catlercbin, 

 hind margin conspicuously straight in (^, more rounded in $• 

 Subcostal vein very much swollen at base, median hardly at 

 all. Vein 5, at origin, about equidistant from 4 and 6 ; 10 invari- 

 ably arising out of stalk of 7, 8, and 9 well beyond cell end. Of 

 the discocellular veins, the lowest is straight, the middle one very 

 much bowed in, the upper extremely short. Hind-wing very little 

 broader than fore-wing, the anal angle slightly produced towards 

 median line, not extending far beyond extremity of abdomen, the 

 outer margin evenly rounded. In the (^ the central third of the 

 fore-wing, except anteriorly, is occupied, in all except one species, 

 by an area of very dark brown modified scales, transversely crossed 

 by a number of fine ridges producing the appearance of ripples — ■ 

 a feature also present iri some species of Callerebia.* 



* Tlie following short key seems to separate the Himalayan species 

 of this E7-ebia-likG group into faii'ly natural genera : — 



1 (2). Fore-wing MDC straight, considerably less than 



J as long as LDC Erebia. 



2 (1). MDC strongly incurved, as long (or nearly so) 



as LDC. 



3 (6). Club of antennae short, stout, arising abruptly. 



4 (5). Vein 10 free or connate with stalk of 7, 8, and 9 . Paralasa. 



5 (4). Vein 10 out of 7, 8, and 9 well beyond cell end . Argestina. 



6 (3). Club of antenna long, narrow and arising 



gradually Callerebia. 



The generic names DaUacha and Hemadara, proposed by Moore 

 for his species hi/agriva and narasingha respectively, scarcely seem 



