30 I Canadian Arctic Expedition, 1913-18 
Genus Lycaenopsis Feld. 
Lycaenopsis pseudargiolus Bdv. and Lee. 
Argus pseudargiolus Bdv. and Lee: Lep. Am. Sept, 118, 1833. 
Nine specimens of this variable species are in the National collection at 
Ottawa from the following northern localities: Dease lake, British Columbia, 
June 8, 1887 (G. M. Dawson); on Whitehorse-Dawson wagon road, Yukon 
Territory, June 2, 1914 (D. D. Cairnes); Alaska, collected with other species, 
the label covering all reading " lat. 59° 30', 141st meridian-and lat. 69° 40', 
141st meridian, June-July, 1912 (J. M. Jessup); ten miles south of Porcupine 
river, Yukon Territory, June 8, 1912 (D. D. Cairnes); six miles south of New 
Rampart House, Yukon Territory, June 6, 1912 (D. D. Cairnes); between 
lat. 67° 25' and 66° 30', long 141°, June 15, 1912 (D. D. Cairnes). 
In the Annual Report of the Geological Survey of Canada, 1887, page 
230b, Fletcher refers to specimens collected in the neighbourhood of Dease lake, 
British Columbia, referring to the same as representing the forms lucia Kirby, 
marginata Edw. and violacea Edw. 
FAMILY HESPERIIDAE. 
Genus Hesperia Fabr. 
Hesperia centaureae Ramb. 
Hesperia centaurece Ramb.: Faun. Ent. And., pi. 8, f. 10, 1839. ■• 
No specimens in the Canadian Arctic Expedition collection. In the Atlin 
district of northern British Columbia the species has been met with.^ In the 
Canadian National collection there are three specimens which were taken in 
Labrador on June 18 and July 16, 1894 (A. P. Low). 
Genus Thanaos Bdv. 
Thanaos persius Scudd. 
Nisoniades persius Scudd.: Proc. Essex Inst., Ill, 170, 1862. 
Two specimens of this Thanaos from Dawson, Yukon Territory, 1908 (collec- 
tor unknown) are in the Canadian National collection. 
Both specimens, one a male, the other a female, were determined as persius, 
several years ago by Dr. H. Skinner. According to Skinner^ the species has a 
wide distribution, being found from Alaska to the Gulf of Mexico and from the 
Atlantic to the Pacific oceans. 
Genus Carterocephalus Led. 
Carterocephalus palaemon Pall. 
Pamphila palamon Pall.: Reise, I, 471, 1771. 
In 1912, the late Dr. D. D. Caii;nes collected a single specimen of this species 
near Siwash creek, Yukon Territory, lat. 65° 59', long. 141°, on June 28. The 
specimen is in the Canadian National collection. 
1 Rep. Prov. Museum of Nat. Hist., B.C., 1914, (1915), F. 24. 
2 Trans. Amer. Ent. Soc. XL, p. 204. 
