16 r Canadian Arctic Expedition, 1918-18 



fig. 8. Barnes and McDunnough 1 have reproduced a drawing of the genitalia 

 of 0. brucei and a comparison of this with our figure of the genitalia of 0. brucei 

 yukonensis while indicating a close relationship, at the same time also bears 

 a near resemblance to the figure of 0. katahdin shown by the same authors on 

 the same plate. With a good series of 0. brucei yukonensis, the latter may 

 ultimately prove to be of specific rank. 



Genus Erebia Dal. 



Erebia discoidalis Kirby. 



Hipparchia discoidalis Kirby: Faun. Bor. Am., IV, 298, 1837. 



Among a small collection of lepidoptera given to me by Mr. L. D. Burling, 

 of the Geological Survey of Canada and collected in Alaska by Mr. J. M. Jessup, 

 is a single male specimen of this species. The label covering all the specimens 

 reads: " lat, 59° 30' and 141st meridian— lat. 69° 40' and 141st meridian, June- 

 July, 1912." This specimen is now in the Canadian National collection. 



Erebia fasciata Butler. 



Erebia fasciata Butler: Cat. Satyr. Brit. Mus., 92, 1868. 



Eleven specimens, eight males and three females, as follows: Bay southwest 

 of cape Krusenstern, Northwest Territories, July 3, 1916, 2 specimens (D. 

 Jenness) ; Bernard harbour, Northwest Territories, August 4, 1915, 2 specimens 

 (F. Johansen); Bernard harbour, Northwest Territories, July, 1916, 7 specimens 

 (F. Johansen). 



These specimens show noticeable variation. In two of the males taken at 

 Bernard harbour there is an almost total absence of the reddish patch in the 

 submarginal area of the upper surface of the primaries; in the other males the 

 reddish patch in such area varies not only in size but in intensity of colour. 

 The red in none of the species is as bright as that in Ehves' figure 2 , but is 

 mahogany reel 3 . The number of white scales present in the basal area and in 

 the band beyond the blackish-brown median band on the underside of the 

 secondaries also varies in the specimens. The underside of one specimen 

 matches almost perfectly that figured by Elwes, in the others the whitish or 

 greyish areas are not nearly so distinct. 



In the three females the greyish band beyond the dark median band on 

 the underside is very conspicuous there being very little of the reddish colour 

 on the primaries. The reddish area on the upper surface of the primaries is 

 not nearly so bright as in Elwes' fig. 12 in the publication referred to above. 

 The colour of the submarginal band on the underside of the secondaries in our 

 specimen is decidedly greyish, more so than is shown in Elwes' fig. 11 of the 

 male. 



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

 collection two specimens collected by the late Dr. D. D. Cairnes, of the Geo- 

 logical Survey; one, a male, collected at lat. 66° 58', international boundary, 

 June 15, 1912, the other, a female, collected at lat. 65° 10', long. 141°, (1,300 feet) 

 on July 30, 1912, (PI. IV, fig. 7). 



Also, seven examples brought back by the Northern Party of the Canadian 

 Arctic Expedition, two males from Armstrong point, Victoria island, Northwest 

 Territories, collected during the period June 20 to July 11, 1916 (J. Hadley), 

 and Walker bay, Victoria island, July 6, 1917 (J. Hadley), respectively, and 

 seven females, six of which are from Armstrong point, Victoria island, June 20 

 to July 11, 1916 (J. Hadley) and one from Walker bay, Victoria island, July 6, 

 1917 (J. Hadley). A male from Armstrong point is shown on PI. IV, fig. 8. 



» Cont. Nat. Hist. Lep. N.A., IV, 2, pi. XXV. 



! Trans. Ent. Soc. Lond., 1903, pi. IX, fig. 11. 



3 Ridgway's Color Standards and Nomenclature, 1912. 



