10 PROCEEDINGS OF THE ACADEMY OF [Part I 



banded with whitish. Head and thorax pale grayish brown. Fore 

 wings pale grayish brown, bases of scales whitish, dusted with scat- 

 tered whitish scales, which occur singly except in the apical third of 

 the wing, where they form ill-defined spots. A row of these extends 

 around the apex from the apical third of costa to the tornus. The 

 costal margin is slightly darkened before the first of these spots. 

 A faint darker small spot on disc and a larger one at end of cell. 

 Cilia whitish at their bases, brown at the tips with an indistinct 

 brownish line through the middle. Hind wings pale brownish gray, 

 cilia whitish at the base. Upper side of abdomen gray, tuft whitish. 

 Underside of body and legs, except the hind tibiae and tarsi, dark 

 brown, sparsely dusted with white. Hind tibiae and tarsi whitish 

 inwardly, dusted with brown outwardly except at tips of segments. 

 Expanse, 18-19 mm. 



Type (cf), McDermott Lake, July 24; one paratype, St. Mary, 



July 18. 



Gelechia altematella Kearfott. 



Two Medicine Lake, July 16, in dry meadows. 



Gelechia versutella Zeller. 



Very common on trunks of aspens, on the leaves of which the 

 larva feeds. Glacier Park Station, July 29. The moths are prac- 

 tically invisible except when moving, so closely do they resemble 

 the darker patches of bark. 



OECOPHORIDAE. 

 Agonopteryx rosaciliella Busck. 



Reared from larvae sewing together leaves of sweet cicely, Os- 



morhiza sp., near Going-to-the-Sun Chalets. Larvae collected 



July 21; imago, August 7. 



Agonopteryx nivalis n. sp. 



Palpi creamy white, slightly shaded with brownish; antennae 

 brownish, darker toward the tips. Head, thorax and fore wings 

 creamy white; fore wings with a faint rusty tinge beneath fold near 

 base of dorsum and along apical third of costa. Minute brownish 

 and blackish spots along costa, three or four larger and more diffuse 

 on apical third; last row of scales along termen between veins, 

 brown; a few scattered brown scales, chiefly along the veins; a very 

 small black spot within the costa near base; a small black spot on 

 middle of cell and obliquely above and before it, a second similar 

 spot; a larger transverse spot at end of cell. Hind wings creamy 

 white. Legs white, dusted with fuscous, the fore pair most densely. 

 Expanse, 23 mm. 



Type (cf ), Two Medicine Lake, July 16. 



Perhaps most like pallidella Busck, but without demarcation be- 

 tween basal area and remainder of wing. 



