nU Mr. II. .). Elwcs on the 



specimens are very like those from the Amur and Kontei 

 which Staudinger calls var. didymoidcs, Ev.,and ab. latoni- 

 gena, Ev., but none of the males are so pale and devoid of 

 marking on the hind-wings as those from Kentei, and many 

 of them can be matched almost exactly in Europe. The 

 females are, however, more variable, some being like those 

 of var. ala, Stgr., from the Thianshan, some very pale like 

 those from Kentei, and others with a good deal of green, as 

 are found not unfrequently in Europe. The difficulty of 

 defining the local varieties of this species is, however, 

 even greater than in the case of aurinia. 



95. M. didynna, Esp., var. 



I found this species not common in the Tchuja and 

 Bashkaus Valleys in June and July. This supposed 

 variety has been named erycina by Lederer, who says that 

 a variety with a pale yellowish- white spotting on the 

 upperside was sent by Kindermann as erycina, and is 

 figured by Herrich-Schiitfer (Fig. GOl). I cannot see, how- 

 ever, that there is any reason to distinguish either the Altai 

 form, or those from Irkut collected by Leder ; I have 

 quite similar specimens from Europe, though the Altai 

 examples have more pale spots at the base on the hind- 

 wings above than is usual in Europe. 



96. M. arcesia, Brem,, var. minor, Stgr. MSS. ? 



This is a small mountain species which matches nothing 

 exactly in Grum-Grshimailo's collection, though it comes, 

 perhaps, nearest to what he calls astcroidca, Stgr., fron\ 

 the Alexander Mountains. It is not solona, Alph., as I 

 at first supposed, being more heavily marked above, and 

 seems to come nearest to what is now considered to be 

 the true arcesia, Brem., which I have so identified by 

 Alpheraky from Irkut. I found it only in the high 

 mountains from G500 — 8000 feet, where it was common on 

 grassy slopes during the whole month of July in company 

 with cinxia, iduna and aiirinia. 



97. 31. aurelia, Nick., var. Iritomartis, Assm. (?) and var. 

 nova (?). 



I found in the Tchuja Valley, on June 20th, at about 

 4000 feet, the first specimens of this, and received others 

 somewhat similar from Onfjodai. I did not get the 

 females until I returned to the Bashkaus Valley at the 



