Lepidoptcra of the Altai Mountains. 313 



reason than intermedivs. It resembles tliose which I 

 took at Laggan in the Rocky Mountains of Alberta Pro- 

 vince, British North America, in being much smaller, 

 the males having often no red ocelli on either wing ; 

 though some have small ones, and the black lunules are 

 also much reduced, and the whole appearance of the 

 insect is quite different in consequence. This variety 

 might be distinguished as var. alpcstris, but as it is quite 

 probable that larger numbers from other parts of the 

 Altai might fail to show these differences, I hesitate to 

 add another varietal name in a genus which is already- 

 overladen with them. The form found in the East 

 Sayansk Mountains by Leder resembles these rather than 

 inter7ncdins. 



5. F. nomion, F. d. Wald. 



First seen at about 5500 feet on July 22nd, afterwards 

 common in the Bashkaus and Tchulishman Valleys at 

 2000—4000 feet, down to near the south end of Lake 

 Teletskoi tlying in the same places as P. apollo, from 

 which at first I did not distinguish it on the wing. I 

 found, however, that it is a weaker flying insect, and 

 much easier to kill than apollo, which has the strongest 

 body of any butterfly known to me, and is impossible to 

 kill by pinching. Judging from their greater freshness 

 nomion comes out later than a2)ollo. I took one male, 

 which at first I thought to be a hybrid between nomion 

 and apollo, as it seemed to combine the markings of both 

 species. However, after reading what Staudinger has 

 written about similar supposed hybrids from the Kentei 

 Mountains, one of which I have in Grum's collection, and 

 noting the fact stated by him that similar aberrations 

 oecur in Amurland, where there are no apollo, I am 

 uncertain whether mine is a hybrid or not. It certainly 

 has the chequered fringes of the wings almost as distinct 

 as a nomion, whilst apollo has the fringes unchequered, 

 and this most distinctive character is not mentioned by 

 Staudinger. There is, however, no reason that I can see 

 why the two species should not breed together. 



6. P. adius, Ev. 



Taken at Tchingistai by Ruckbeil, but not seen by 

 Kindermann or myself, 



