i'6 THE CANADIAN ENTOMOLOGIST. 



Mount Hector, in the northwest ; Mount Temple, about eight miles south- 

 west, with a great field of snow and ice on its summit a mile above the 

 valley ; Mount Lefroy, seven miles to the south, and the glacier of 

 Noore's Creek, nine or ten miles west ; also Emerald Lake, three miles 

 south of the Bow, and the various rapids and canons of the Bow and 

 Pipestone. 



For names and figures made use of, I am indebted chiefly to the 

 " Geological Survey of Canada " and " Gannett's Dictionary of Altitudes." 



Preliminary to a consecutive list of the Laggan butterflies, to be 

 written when all the material is sufficiently understood, I propose now to 

 present such details as are likely to be of interest in regard to some of 

 the least familiar of these Western Alberta autochthones. 



CoLiAS Elis Strecker ; its seasons and variations, with information in 

 regard to the male : — 



This fine butterfly was first collected by Capt. Geddes, who records 

 the capture of the female at Laggan, on Aug. ist, 1884 — the only definite 

 date I find in print. The reason the Captain did not find the male was 

 because it was not lost, but gone before. Capt. Geddes also catalogues 

 Colias Meadii Edw.^ as collected at Laggan in the season of 1884. 



Mr. Strecker's description of Elis may be found in " Proc. of the 

 Acad, of Nat. Sciences of Philadelphia" for 1885, pp. 24-25. Mr. 

 Strecker says : — 



" Capt. Geddes took about fifteen examples, all females, nine of the 

 orange form, and about six of the white ; bat nothing that could possibly 

 be considered as the male. The other examples of Colias captured in 

 the same locality were lemon-coloured males and females probably of one 

 species, and allied to Pelidne, but bearing no kinship to the above. The 

 most remarkable and distinctive feature of this C. elis is the white female ; 

 as the species, I am positive, will be found, whenever the male is dis- 

 covered, to belong to a group in which albinous females are unknown, its 

 congeners being Heda, Hela, Staudingeri and Eogene, species in which 

 no instance of the pale female has yet been known to occur ; all of which 

 are found only at great altitudes, or at the North Polar Regions, and are 

 in the male distinguished from the other red or orange species by the ab- 

 sence of the mealy kidney or oval-shaped spot on the upper surface of the 

 costa of secondaries near the body. 



"It is curious, in regard to these albinous females of the Coliades, 



