THE CANADIAN ENTOMOLOGIST. 59 



on the peaks with Mr. Elwes : — " In Ivalida, as a species, he utterly dis- 

 believes, though Mr. Owen said there was a vast deal of difference be- 

 tween the habits of it and Chryxus." Mr. Elwes afterwards visited Pro- 

 fessor Owen, and it appears yielded his prepossessions. But why does 

 not a difference in habits and flight and geographical range in the three 

 species before spoken of indicate differences which are specific, as well 

 as in Ivalida and Chryxus ? 



On page 466, our author thinks that in the absence of any confirma- 

 tion of Mr. Fletcher's statement that "a single female of Macounii was 

 taken at Morley, Alberta, he is inclined to think this female must have 

 been Nevadensis " — which is the first time I have heard that a statement 

 of Mr. Fletcher's needed confirmation by another witness. " But 

 our entomological knowledge of the vast tract of prairie and 

 forest north and west of Lake Superior is so trifling that 

 I have little doubt that it {Macou/iii) will be discovered else- 

 where." In the Revision of Argynnis, this author laid it down as a 

 proposition that North America was now so thoroughly explored 

 that no more new species of Argynnis need be expected to appear. Since 

 the publication of vi^hich I have described six new species of Argynnis, 

 three of them as pronounced as Atossa, Alberta and Victoria. It is un- 

 safe to prophecy. 



Under Uhleri is put V-iruna as identical. " It is impossible to 

 separate the two forms," p. 472. Varuna is a plains species, in Dakota, 

 according to Wiley, living on the "bad lands," and on rolling and plateau 

 prairie, which is covered with grass and sage-bush, the elevation about 

 2,000 feet. Morrison took it in Dakota also, elevation 1,200 feet. Mr. 

 Wright took it in Montana, on the foot-hills of the low, isolated moun- 

 tains, considerably to the East of the Rockies. He says : " I have never 

 seen it flying west of the Missouri River, nor on any of the spurs of the 

 chief Rocky Mts. It flies only on the lower slopes, say at 1,000 feet or so 

 above the level lands." Mr. Elwes says, that in the Rocky Mts. of 

 Alberta it goes up 4.000 feet, at Kananaskis, which would be equivalent 

 to upwards of 5,000 in Colorado; but that he has taken Uhleri \n the 

 Rockies at 9,000-10,000 feet, and in Yellowstone Park at 7,000. Mr. 

 Bruce says Lhleri is taken at from 5,500 to 10,000 feet, in Colorado. 

 One and the same species of Chionobas does not fly on low grassy plains 

 and on alpine peaks. The differences in the facies of the imago are 

 patent enough to an experienced eye. Undoubtedly they are two 



