GENUS BRENTHIS 145 



149. Brenthis Freija. 



Plate XVII ; Figures 149, a, b. 



Fig. 149, Male, Rocky Mountains of Colorado, no data; 

 Dr. Barnes. 



a, Male, underside, Rocky Mountains of Colorado, 



no data; W. H. Edwards. 



b. Female, Middle Park, Rocky Mountains, no 



data; Dr. Barnes. 

 This is strictly an arctic butterfly, and is found from Labrador 

 across the continent to near Behring Straits, and St. Michaels is 

 the most southern point at which it has ever been taken that I have 

 heard of, yet it is common apparently in Colorado, at no great alti- 

 tude ; there is no visible reason why it should not be abundant in 

 the mountains of the West Coast, south of St. Michaels. 



150. Brenthis Frigga. 



Plate XVII; Figure 150, Male, Western Colorado, no 

 data ; Dr. Barnes. 

 This is another of those Rocky Mountain species that has not 

 yet been taken in the mountains of the West Coast, although there 

 is no apparent reason for its absence. 



151. Brenthis Epithore. 



Plate XVII; Figure 151; Vancouver Island, June 21, 

 1891; Author; 151 b. Female, underside. 

 This is a common thing on the West Coast, being found as far 

 south as Mendocino County, on the hills, everywhere in fact except 

 the plains and the high mountains. It flies north to St. Michaels, 

 Alaska, and doubtless to the Arctic Ocean. It is of very gentle 

 flight, and is easily taken. In the more southern part of its range 

 it becomes lighter in coloration, and is then known by another 

 name, as follows : 



152: Brenthis Kremhild. 



Plate XVII; Figure 152, Male, San Francisco Mts., Ari- 

 zona, 1887; F. Stephens. 

 Kremhild is the southern form of Epithore, and is found in 

 Utah and Arizona; but it seems to be separated from the places 

 where Epithore is found by some few degrees of latitude and of 

 longitude; a sort of neutral ground, wherein neither form will 

 live. That singular feature, however, is not peculiar to this 



