Lepidoptera 1 1 i 



Eurymus nastes Bdv. 



Colias nastes Bdv.: Icones, p. 245, pi. 8, 1832. 



Thirty-eight specimens from the following localities : Barter island, northern 

 Alaska, July 17, 1914, 1 female (D. Jenness); Collinson point, Alaska. July 10, 

 17, 1914, 2 females (F. Johansen); Cockburn point, Dolphin and Union strait, 

 Northwest Territories, September 2, 1914, 1 male, 1 female (F. .Johansen). 

 Bernard harbour, Northwest Territories, 13 males, 20 females, July 30, 1915, 

 August 1, 4, 6, 11, 14, 17, 25, 1915, July 14, 1916 (F. Johansen). 



This excellent series has enabled us to form a good idea of the range of 

 variation which may occur within the species. The wing expanse of the males 

 varies from 35 mm. to 38 mm. and the females from 34 mm. to 43 mm. In 

 the males the underside both in colour and markings is fairly constant but the 

 upperside shows more variation. The secondaries are mostly of a pale fluorite 

 green 1 more or less dusted with black. The primaries in most specimens are 

 darker than the secondaries, the whole wings in some examples being heavily 

 dusted with black. In the females there is more colour variation on the under- 

 sides, some specimens being greenish-yellow others darker green and others 

 again dark green with a pinkish tinge. In most of the specimens the marginal 

 band of yellow is conspicuous. 



Verity 2 has figured a male and a female (types) of the variety rossii Guenee 

 brought back by Captain Ross. None of our males can with certainty be 

 definitely associated with the figure of the male type but one or two of the females 

 match fairly well the figure of the female type. The figures on plate 27 d. of 

 Seitz's Macrolepidoptera of the World are more like our specimens. 



A single example (female) was brought back by the Northern Party of the 

 Canadian Arctic Expedition. This was collected at Armstrong point, Victoria 

 island, Northwest Territories, early July, 1916 (J. Hadley). 



In addition to the above specimens there are in the Canadian National 

 collection three females from Sore-head river, east coast of Hudson bay, August 

 15, 1898 (A. P. Low), and one male specimen from Labrador (collector and 

 exact locality unknown). 



FAMILY SATYRIDAE. 



Genus Coenonympha Hbn. 

 Coenonympha kodiak yukonensis Holland. 



Coenonympha kodiak var. yukonensis Holland: Ent. News, XI, 386, 1900. 



In 1905, Mr. Joseph Keele, of the Department of Mines, Ottawa, collected 

 five specimens of this butterfly as follows: Lansing river, Yukon Territory, June 

 24, 3 males, 1 female; Ladue river, Yukon Territory, July 4, femah'. 



These specimens are in the National collection at Ottawa. This butterfly 

 was not collected by any members of the Canadian Arctic Expedition. 



Genus Oeneis Hbn. 

 Oeneis chryxus Dbldy. and Hew. 



Oeneis chryxus Dbldy. and Hew.: Gen. Diurn. Lep., II, 383, 1851. 



In the Canadian National collection are two specimens of this species 

 taken by Mr. J. Keele, on the Pelly river, at Hoole canyon, Yukon Territory, 

 July 3, 1907, both males. One of the specimens, although rubbed, resembles 

 a specimen of the variety Calais Send, in the Ottawa National collection from 

 Go Home bay, Ontario. 



1 Ridgway's Color Standards and Nomenclature, 1912. 



2 Rhopalocera Pala>arctica. 



