LEPIDOPTERA— SATYEIDAE— EEEBIA TYNDARUS. 775 



much less partial to flowers than is the case with that species, and has almost 

 entirely the hahits as well as the appearance of CMondbas rather than Saty- 

 rus. Specimens were brought from Southern Utah by the expedition. 



EREBIA, Dalman. 

 EREBIA EPIPSODEA, Butler. 

 Erebia Ehodia, Edw„ Trans. Am. Eut. Soc., 1871. 



This species inhabits the mountains of Colorado below timber line. 

 Specimens were brought from Fairplay by the expedition. It begins to 

 appear about the first week in June, is common by the middle of that 

 month, and remains until the last of July. 



Dr. Staudinger, in a letter tome, claims that this species is identical with 

 some varieties of the European E. Medusa. Not having' specimeus of the 

 latter at hand, I cannot say how far this view may be well founded; but the 

 species was originally described by Mr. Butler, of the British Museum, who 

 certainly had abundant material for comparison, and it seems probable that 

 the name will stand. 



EREBIA TYNDARUS, Esper, var. CALLIAS, Edw. 

 Erebia Callias, Edw., Trans. Am. Ent. Soc, 1871. 



Above timber line (about 11,000 feet) in Colorado, E. Tyndarus en- 

 tirely replaces E. Epipsodea. It is a rare thing to find the former species 

 below that elevation, though it is quite abundant on the bleak summits of 

 the mountains. The first specimens seen were taken on the Arkansas 

 divide, July 8, when six specimens were captured. A few were taken on 

 peaks near Twin Lakes; but on recrossing the divide, July 21, the species 

 had become much more abundant, and fifty specimens were secured in a 

 short time. E. Tyndarus was also found on Mount Lincoln and Gray's 

 Peaks. None were seen after the middle of August. 



Dr. Staudinger, after receiving one or two specimens of this variety 

 (Callias) of E. Tyndarus, wrote to me that the former was not a variety of 

 Tyndarus, ''because it was entirely identical with that species." After care- 

 fully examining all the European specimens at my command, it seems to 

 me that there are sufficient differences to entitle our form to a separate des- 



