THE CANADIAN ENTOMOLOGIST. 119 



Ersephila indistincta, n. sp. 



Expands 35-40 mm. Some time since, Trans. Am. Ento. Soc, Vol. 

 XXIII., p. 291, I described Ersephila grandipetmis. I am convinced I 

 have two species under that name, and now separate them, calHng one of 

 the forms E. ifidistincta. The two species approach each other very 

 closely, but E. indistincta is smaller as a rule, and has the darker colour 

 of the wings forming into two bands, one basal and the other beyond the 

 cell, both quite even in width. E. grandipe?inis is much more diffuse, the 

 bands not shown, the cross lines more angulated, and the lines themselves 

 more distinctly outlined. E. indistincta has the antennae of the $ more 

 distinctly bipectinate than E. grandipe?inis, and the wings are generally 

 somewhat tinged with browish. 



The specimens of E. indistincta are from Colorado and Washington ; 

 those of E. grandipennis from Colorado only. 



Xanthorhoe glacialis, n. sp. 



Expands 34-36 mm. Very much resembling X. nemorella, Hulst, 

 and quite possibly a variation of that northern species. The ground 

 colour of the fore wings is, however, ochreous stained with fuscous, the 

 cross band is broader, especially at inner margin, and the outer edge, with 

 a large angle strongly projected outward at space between veins 4 and 5, 

 and there is a submarginal row of fuscous spots somewhat triangular in 

 shape, and intervenular in position. There is a faintly showing broad 

 central band on hind wings. Below dull ochreous, with the lines border- 

 ing bands showing distinctly on all wings. 



Alaska. The Museum type number is 3925. 



Xanthorhoe i.ongula, n. sp. 



Expands 34-36 mm. Close to X glacialis, Hulst. Fore wings 

 pointed, even light ochre, or buff ochre with the colour deepening into a 

 faint broad central band with faint ochre shadings and fine lighter cross 

 lines, the band reaching out more prominently between 3 and 4, and 

 between 4 and 5 ; the apex and margin somewhat fuscous stained, and a 

 blackish marginal line. Hind wings fuscous ochre, or becoming bright 

 ochre outwardly. Beneath almost even, light fuscous ochre varying to 

 more or less ochre. 



" Berring Island." My specimens are females, but the relationship 

 seems to be so close to X. glacialis, Hulst, that I have little doubt as to 

 generic oneness. I would not be at all surprised if they were ascertained 

 finally to be variations of one species. The Museum type number 3926. 



