334 Mr. H. J. Elwes' notes on 



alpine form of it. This seems rare and local in Switzer- 

 land. Meyer- Dur considered ccecilia to be a form of 

 glacialis, but in this I cannot agree with him, as I have 

 taken it both in the Alps and Pyrenees in localities 

 quite unlike, and widely separated from, the stony slopes 

 which glacialis inhabits. 



E. ceto and ceme are both distinct species. Gumppen- 

 berg says that the var. hippomedusa connects ceto with 

 medusa, and var. spodia connects ceto with oeme ; but I 

 have seen no specimens of either that I should consider 

 doubtful, though the variation in the ocelli is very great 

 in both these species. 



E. medusa. — This is a very wide-ranging species, which 

 extends from Germany to the Upper Amur and the 

 North of Scandinavia. It is supposed by Strecker, who 

 quotes Staudinger in support of his opinion, to be 

 inseparable from cpipsodea, Butl., a species which inhabits 

 the Eocky Mountains and extends north to British 

 Columbia. I have no specimens of medusa from Siberia for 

 comparison, but all my European specimens maybe easily 

 distinguished from the American species by the absence 

 of the band on the hind wings below ; this band is more 

 or less present in the vars. uralensis, Stgr., and polaris, 

 Stgr., and it may be that specimens of these forms occur 

 which connect medusa with epipsodea, though I have not 

 seen them. 



Von Gumppenberg separates polaris specifically from 

 medusa on account of the difference in the hind wings 

 below, and makes uralensis a variety of it, placing them 

 next to epipsodea ; but I am not at present able to 

 concur in this opinion. 



I have a single specimen and Mr. Godman has a similar 

 one collected by Bruce in Cashier Valley, Summit County, 

 Colorado, at 12,000 feet, which are considered by Bruce 

 and W. H. Edwards to be a variety of epipsodea, though 

 it is so different from it that had I more specimens I 

 should be inclined to consider it as a different species, 

 more especially as epipsodea does not appear to extend 

 to such great elevations or to vary much ; though its 

 range of altitude is very great. I have taken it in 

 Idaho at about 2000 feet elevation, and in the Yellow- 

 stone Park at 5 — 6000 feet, and have it from Colorado, 

 taken by Bruce as high as 9500 feet. 



The specimens above mentioned are somewhat smaller 



