Lepidoptera of the Altai Mountains. 319 



variable in the breadth of the border, and in colour agree 

 with those from the Swiss Alps, var. europomone. Ochs., 

 fide Staudinger. The underside is perhaps a trifle less 

 yellow (more darkly freckled with green), which character 

 Staudinger (Iris, v, p. 311) gives as distinctive of his var. 

 orientalis, of which I have typical specimens from Kentei, 

 and others from Vitim and the Amur. I can see very 

 little reason for separating any of these from the Swiss 

 form. The few I have from Japan have a broader border, 

 and appear to be more worthy of a varietal name. 



22. Golias nastes, Bdv. ? var. mongola, Alph., Rom. Mem. 

 ix, p. 188. 



I found this interesting form abundant in the mountains 

 south of Kuch Agatch, at about 7000 feet, especially in 

 the broad, flat, gravelly beds of mountain streams which 

 were overgrown with alpine and arctic plants. Here it 

 appeared on July 3rd, and soon became very numerous. 

 Its flight was very quick and jerky close to the ground, but 

 not nearly so strong as that of melinos, which kept more 

 to the mountain sides. The type of mongola was taken 

 by Leder near Urga, according to Alpheraky, but pro- 

 bably this is an error, as Staudinger says (Iris, viii, p. 

 345), that Leder collected the specimens labelled Urga 

 by Christoph, in the Changai Mountains, about half way 

 between Uliassutai and Urga. Alpheraky says that this 

 form is between cocandica, Ersch., and maja, Gr.-Gr., but 

 it seems to me to be hardly distinguishable except by 

 its smaller size from tamerlana, Stgr.,adark form of nastes 

 found in the Eastern Thianshan. Maja is much lighter 

 in colour, and the females especially differ from those of 

 mongola. 



23. Colias melinos, Ev. 



This butterfly was first seen at Ongodai, where I caught 

 a pair in cop. on June 10th, and others on the 14th 

 and 18th, in wooded valleys at 3000—4000 feet. All these 

 specimens, together with a female which I took on the 

 Bashkaus on July 25th, when it was quite worn out, 

 though variable in size may be distinguished from the 

 numerous specimens I afterwards found on the high 

 Tchuja Mountains by the paler colour of their underside, 

 which agrees with five pairs from the Amur and with 

 others from the Vitim, taken by Herz, and Irkut, taken 



