338 Mr. H. J. Elwes on the 



underside of the hind-wing. Altai specimens are much 

 smaller than tiiose from the Lower Amur, and not so dark 

 as those from Irkut. 



102. A. euphrosyne^ L. 



I only took this in the Tchuja Valley at 3000— 4000 feet 

 in the middle of June, when it was not common, but Jacob- 

 son and Berezowsky sent a few from Ongodai, which do not 

 differ from Central European specimens. 



103. A.freija, Thnb., vtiv. 2''cdlida, var. nov. 



This was perhaps the commonest buttcrHy on the dry 

 grassy downs in the mountains south of Kucii Agatch, 

 especially at 7000 — 8000 feet in j)laces where there was 

 little vegetation but dry wiry grass, quite unlike the boggy 

 places which it frequents in Europe and North America. I 

 first saw it on June 25th, and took a large series in good 

 condition. The whole of these are at once to be distin- 

 guished from any of my large series from Europe, East 

 Asia, and America by the pale coiour of the fore- and hind- 

 wings, which gives them the appearance of faded butterflies 

 even when they are fresh out. This is especially notice- 

 able on the underside of the fore-wing, and as those taken 

 by Herz on the Vilui river are darker on the average than 

 European specimens, I think this must be regarded as a 

 constant local variety. The only other localities in Siberia 

 from which I have it are Albasin on the Upper Amur river, 

 and the E. Sayansk Mountains. Both these show some 

 approximation to the var. pallida, but are distinguishable 

 from it. 



104. A. pales, Schiff. 



This was very abundant after the middle of July from 

 6000 — 7000 feet, and varied extremely in size and colour. It 

 was most abundant in maishy meadows above timber-line. 

 In size they average considerably larger than European 

 specimens, and are considered by Staudinger to belong to 

 the form known as Isis, Hubn., which is in the Alps of 

 Europe inconstant; the females vary as in Europe from the 

 very darkest napxa to the palest form. I saw nothing 

 like the Pamir and Ladak form known as generator, Stgr. 

 Those taken by Leder in the Sayansk Mountains anil 

 Mongolia are, on the whole, very like my specimens. 



