THE CANADIAN ENTOMOLOGIST. 97 



that in one group they should occur in one species only, whilst in another 

 there should be but one species, C. Meadii, found also at great elevation, 

 in which they do not occur ; and in yet another species, C. Vautierii, of 

 the same group with the last mentioned Meadii, found in Chili, the female 

 is always white, such a thing as a red one being entirely unknown." 



I find nothing in print from Capt. Geddes as to the elevation at which 

 he found his specimens of E/is. Mr. Strecker states it as ten thousand 

 feet, but that is evidently incorrect : timber line in the region occurs at 

 about seven thousand feet, and the habitable belt extends but little more 

 than a thousand feet above that elevation, while comparatively few of the 

 ultimate barren peaks reach a height of ten thousand feet. Elis is by far 

 most frequent at a little over five thousand feet, and is often met with in 

 appropriate localities up to about six thousand feet ; it is rarely seen much 

 higher than about six thousand feet, and never in my experience found 

 above the tree line. 



In regard to the distribution of Elis, I have little information. It is 

 known to me only as inhabiting a very limited district. Eastward it 

 becomes less frequent quite abruptly, and I have not seen it further east 

 of Laggan than four or five miles ; it probably drops out of the fauna 

 entirely on the east within ten miles of Laggan. To the southwest, across 

 the summit, I have found it only as far as Hector siding, three miles west 

 of the height of land ; beyond Hector its territory cannot extend far, as 

 the decrease of altitude on the west slope at the head of the pass is very 

 rapid, amounting to one thousand feet in the first six miles. The entire 

 extent of the range of Elis from east to west, as known to me, is not more 

 than thirteen miles. As to the distribution north and south, along the 

 central line of the mountains, nothing is known, but in that direction its 

 empire may be extensive. An interesting problem it is : How far the 

 domain of Elis extends north and south from its thinly settled reserve on 

 the Bow ? — how far northward along the narrowing angle of the upper 

 Rockies toward the wide-spread country of Hecla ? — and southward, how 

 far across a thousand miles of intervening mountainous wilderness toward 

 the ancient villages of Meadii on Colorado's cloudy summits ? Within 

 the narrow limits of its known district, Elis is of general occurrence in 

 localities where its food plant grows, though at few points is it ever any- 

 thing but rare. A part of the best locality known to me was devastated 

 by the fires just east of Laggan in June, 1889. Elis has partially estab- 

 lished itself upon the high flats and hills between Laggan and the nearest, 



