1921] NATURAL SCIENCES OF PHILADELPHIA. 17 



tible yellowish tinge in the female. Fore wings usually entirely 

 immaculate, sometimes with a few scattered brownish ochreous 

 scales; one or two such scales near end of fold, at end of cell and in 

 the apex and along termen. A faint narrow blackish line some- 

 times present in the cilia at apex and along termen. Hind wings 

 white or pale gray. Legs white, shaded with fuscous. Abdomen 

 white, in the male shaded with golden yellow beneath, and wdth a 

 golden yellow anal tuft. Expanse, 12 mm. 



Glacier Park Station, July 14 and 29; in dry meadows. 



Type (cf ) and three paratypes (one cf and two 9 's). 



Only in one of the males are the scattered ochreous scales present 

 on the fore wdngs; the wings in the other three specimens are entirely 

 immaculate. 



Allied to E. orestella Busck, with which it agrees in venation; 

 but easily distinguished by the golden anal tuft of the male. 



Tinagma gigantea n. sp. 



Labial palpi yellowish white above, scales of tuft grayish. An- 

 tennae grayish, tinged wdth ochreous beneath. Head and thorax 

 dusted about equally wdth whitish and pale gray. Scales of the 

 ground color of the fore wings are pale gray at their bases, shading 

 into white of varying width, followed by a black tip. A broad 

 blackish • transverse fascia just before middle of wing, ill-defined 

 on its inner edge, narrowly margined with white on its outer edge, 

 and outwardly obtusely angulated on the cell; a similar dark shade, 

 its margins not defined, crosses at two-thirds, fading out into the 

 general ground color toward apex. ^Marginal row of scales nearly 

 black, cilia dark gray. Hind wings dark gray. Legs blackish, 

 slightl}^ dusted with gray; tips of tarsi pale gray. Expanse. 14-15 

 mm. 



McDermott Lake, July 22-24; Going-to-the-Sun ,July 20; Glacier 

 Park Station, July 28-29; in dry meadows. 



Type (d^), Julj^ 24; twenty-one paratypes. 



This species flies at dusk. The moth has the peculiar habit of 

 slowly raising and lowering the wing. 



The markings are similar to those of T. ohscurofasciella Chambers, 

 but T. gigantea is much larger and lacks the brownish tint of that 

 species. 



Tinagma pulverilinea n. sp. 



Labial palpi white, with black specks outwardly. Antennae pale 

 gray. Head and thorax white, dusted with black. Scales of the 

 general ground color of the fore wing wdth base gray, followed by a 

 usually broad w^hite bar, black-tipped. A broad dark transverse 

 fascia just before middle of wing, convex outwardly and bordered 

 outwardly by a row of scales which are almost entirely white. A 



