104 THE CANADIAN ENTOMOLOGIST. 



35. Erebia discoidalis, Kirby. Common, especially in the hills; also at 



Lacombe and Banff. May (earliest record, April 30th). 



36. E. disa, var. mancinus, Doub.-Hew. Lacombe, in a tamarack swamp, 



fairly common. May (Gregson). Mr. Ehves is the authority for 

 the name. Mr. Sanson records it from Banff. It probably 

 occurs there, but the specimens he sent me under this name were 

 the following species. 



37. E. epipsodea, Butl. Very common everywhere. June and July. 

 Var. Brncei, Elwes ? A single specimen of this var., or something 



very like it, taken at the head of Pine Creek, is in the collection 

 of Mr. Elwes. I have never seen another. 



38. Satyrus a/ope, form 7iephele, Kirby. Very common around Calgary 



and Lacombe. July. I have specimens labeled both olympus 

 and ariane by Mr. Edwards. 



39. Chionobas Macounii, Edw. Decidedly rare and very erratic in 



appearance. June and July. Has been taken near Calgary, 

 Red Deer, and Morley. For further notes on this species vide 

 Can. Ent , XXX,, p. 2 98, et seq. In addition to the records 

 there given, a single specimen was seen in 1900 in the spruce near 

 Billings's lumber mill. 



40. C. chryxus, Doub.-Hew. Banff and Laggan. June to August. 



Have never seen it anywhere near Calgary. 



41. C. alberta, Elwes. Usually very abundant on the prairie around 



Calgary. Far less common near the spruce limit. May and 

 June (earliest record, May 3rd). Extremely variable in colour, 

 mesial band on secondaries, and number of ocelli. I have 

 specimens of both sexes without ocelli. No records from Banff 

 or Lacombe. The validity of this species has long ago been fully 

 established by both Mr. Elwes and Mr. VV. H. Edwards. A 

 treatise dealing fully with the form would occupy too much 

 space here; but, for the benefit of those who still have difficulty 

 in distinguishing it from vari/na, it may be pointed out that the 

 mesial band on primaries beneath, sharply toothed outwards 

 below the cell— the tooth being invariably visible from above — 

 as well as the usually conspicuous whiteness of the veins on 

 secondaries, are comparatively safe guides by which alberta may 

 be distinguished from the following species. Hie safest guide of 



