Feb., '08] ENTOMOLOGICAL NEWS. 73 



The North American Species of the Genus Erebia 



(Lepidoptera). 

 BY KARL R. COOLIDGE. 



The species comprising the genus Erebia are all arctic in 

 habitat or are found at high elevations in temperate regions. 

 For this reason many of our species are rare in collections. 

 The writer has been fortunate in obtaining most of the species, 

 but several descriptions have been taken from figures. The 

 following compose our fauna : 



1. fasciata Butl. 



^ Wings above immaculate dark brown. Beneath paler, with a wide, 

 grayish submarginal band on both wings, not quite reaching to the lower 

 margin of the primaries; a more or less obsolete basal band; bands bor- 

 dered with black. 



9 A reddish patch on primaries and a narrow band on secondaries 

 above. Exp. 1.80-2 inches. 



Habitat. Alaska and Arctic America. 



2. discoidalis Kirby. 



Primaries reddish brown, with a triangular, obscure, reddish, discoidal 

 stripe from base to posterior margin; costa grayish. Secondaries brown. 

 Beneath primaries as above, tipped with gray. Secondaries beneath 

 indistinctly marbled and clouded with gray and whitish; fringes whitish 

 and brown alternately; body brown; antennae annulated with white. 

 Exp. 1-1.50 inches. 



Habitat. Boreal America; Hudson Bay; Canada, Alberta. 



3. rossi Curt. 



Superior surface of wings dark reddish brown. On primaries toward 

 apex two ocellated spots close together. Beneath as above, the ground 

 color paler; on primaries the outer portion is a pale band containing a 

 series of white points. Exp. 2 inches. 



Habitat. Boreal America; Hudson Bay; St. Lawrence Bay. 



4. disa, var. mancinus D. and H. 



Upper surface of wings blackish brown. On primaries a reddish sub- 

 marginal band in which is contained three or four black spots, pupiled 

 with white, the upper two more distinctly so. Primaries beneath as 

 above. Under surface of secondaries brown, densely powdered with 

 grayish scales; a broad, more or less distinct grayish-black median band, 

 deeply indentated toward base, regularly sinuate outwardly; base gray- 

 ish; a submarginal row of blackish lunules, sometimes obsolete; a whit- 

 ish spot on secondaries; at costal margin and on outer edge of band a 

 whitish, triangular patch. Exp. 1.50 inches. 



