Genus Geirocheilus 



Early Stages. Hitherto undescribed. 



Sofia has been found at Fort Churchill in British America, in 

 the Yellowstone National Park, and in a few localities in Colo- 

 rado. It is still rare in collections. The figure in the plate is 

 that of the female type of Edwards' ethela, ethela being a 

 synonym for sofa. 



(6) Erebia magdalena, Strecker, Plate XXV, Fig. 17, $ 

 (Magdalena). 



Butterfly. Uniformly dark blackish-brown on both sides of 

 the wings, with no spots or markings. 



Early Stages. These have been partially described and figured 

 by Edwards. 



This species has thus far been found only in Colorado at an 

 elevation of from ten to twelve thousand feet above sea-level. 



There are two or three other species of this obscure genus, 

 but they are rare boreal insects, of which little is as yet known. 



Genus GEIROCHEILUS, Butler 



Butterfly. Medium-sized butterflies, dark in color, with light 

 eye-like spots on the primaries and brown borders on the secon- 

 daries. The antennae are short, with a gradually tapering club; 

 the palpi are long, slender, compressed, well 

 clothed with scales on the lower surface. The 

 costa of the fore wings is strongly arched, the 

 outer margin evenly rounded, the outer margin 

 of the hind wings regularly scalloped. The 

 costal vein of the primaries is somewhat 

 thickly swollen at the base. 



Ea rly Stages. Unknown. 



(i) Geirocheilus tritonia, Edwards, Plate 

 XVIII, Fig. 21, $ (Tritonia). 



Butterfly. The wings of the upper side 

 are dark brown, with a submarginal row of 

 white-centered ocelli below the apex of the 

 primaries. The secondaries are marked with 

 a submarginal band of red. On the under 

 side the fore wings are as on the upper side. The hind wings 

 have the submarginal band purplish-red, irrorated with whitish- 



21 I 



FIG. 1 19. Neuration 

 of the genus Geirochei- 



