Lcpidoptcra of the Altai Mountains. 353 



waiting some time took one $ only, the sun being very 

 fitful, and the insects wild and difficult to approach ; two 

 more visits to the place only resulted in the capture of 

 four more females, three of which, however, were quite fresh. 

 In its habits this is a true (Ends, but in appearance the 

 female is very like Satyrus hippolytc. It is not so nearly 

 allied to jutta, as I thought when I revised the genus. The 

 male has a distinct sex-mark which, notwithstanding what 

 Dr. Staudinger says (Iris, vii, p. 248, note), is, though not 

 absolutely constant in some species, a very useful character 

 in separating these nearly allied insects. P.S. — Since see- 

 ing Dr. Staudinger's types I am not at all certain whether 

 this is the same species as Mulla, which as Staudinger says 

 is a near ally of jutta, and resembles that species more on 

 the underside than mine does. As, however, there are 

 only two males in his collection, and I am unable to 

 examine the genitalia of the type, I will not give another 

 name until more material comes to hand. 



138. CE. noma, var. altaica, var. nov. (PI. XIII, fig. 2 ^ , 

 5?). 



This fine species was first taken in the Tchuja Valley 

 at about 4000 feet on June 19th, and the female a few 

 days later near Kurai. I did not see more than one or 

 two specimens on any occasion, and as it flies fast in open 

 larch woods and settles on tree-trunks it was hard to 

 catch. When we returned to the valley again a month 

 later I got three or four more, mostly worn specimens. 

 I have also a female from Grum's collection from the 

 south-western part of the Altai (near Semipalatinsk), 

 and have seen others taken at Kysas in the Abakan 

 district of the Yenesei Valley in 1897 by Jacobson, 

 which I believe to be the same species. I also have four 

 males taken by Ruckbeil in 1881 or 1882 in the South- 

 western Altai sent to me by Herr Tancre as noma var. ; 

 but the females from Tchingistai sent me this year by him 

 as noma var. appear to be verdanda, Stgr. (Plate XIV, fig. 

 6 ^ ). The males when quite fresh are very dark, a much 

 more chocolate colour than the females, or than any noma, 

 from Scandinavia. The underside of the hind-wing is 

 also much more brightly marked and spotted than in 

 noma. But the character of the sex-mark, the form of 

 the band of the hind-wing, and that of the clasp which 

 appears identical with that of noma, incline me to think 



