6 PROCEEDINGS OF THE ACADEMY OF [Part I 



fifth of wing purplish; an orange spot at basal fifth below fold but 

 not reaching dorsum; a large black scale tuft near middle of wing 

 below fold; a similar tuft at tornus, bordered toward base with white 

 scales; a little behind this, on costa, a large white spot; a series of 

 six white streaks, three costal and three terminal,, around apex, 

 arranged fan-like, not reaching into the ciha. Cilia brown, paler 

 at the base. Hind wings and cilia brownish gray. Legs black, 

 with tips of segments and a bar across the hind tibiae white. Ab- 

 domen dark brown, tip orange. Expanse, 9 mm. 



Type ( 9 ), McDermott Lake. 



The larva mines leaves of fireweed, Chamaenerion angustifolium, 

 making a linear mine which enlarges into a pale greenish blotch. 

 The imago emerged August 14. 



Mompha unifasciella Chambers. 



The galls common throughout the park on stems of fireweed. 

 Imagoes emerged from August 12 to 22. 



GELECHIIDAE. 



In addition to the species which are referred to or described be- 

 low, a limited number each of other species were collected. 



Aristotelia rubidella Clemens. 



Common in the dry mountain meadows at about 5000 feet. 



Telphusa praefixa n. sp. 



Labial palpi dark fuscous, paler inwardly; a very narrow whitish 

 annulus is faintly indicated at the basal third of the second segment, 

 a broad white annulus at apical third; base, an annulus before the 

 tip and extreme tip of third segment white. Antennae fuscous, 

 annulate with pale gray above, most distinctly toward the apex. 

 Head pale gray, scales tipped with white. Thorax and fore wings 

 dark fuscous, sprinkled with black scales in the middle and apical 

 part of the wing; scales of the thorax and wing near the base min- 

 utely tipped with whitish. From basal fourth of costa an out- 

 wardly oblique pale fascia (scales pale gray, white-tipped, con- 

 colorous with the head), narrowing toward dorsum, reaches a little 

 beyond the fold; it is bordered inwardly by a heavy line of black 

 scales, which ends in a small patch of raised black and whitish scales 

 just below the fold. A small patch of raised black and white scales 

 on the fold beyond the fascia. An indistinct pale spot in the middle 

 of costa; an irregular transverse pale fascia at three-fourths con- 

 colorous with the oblique fascia, scarcely reaches the dorsum, and 

 sends a short broad inward projection basalwards in the middle of 

 the wing. At the inner edge of this projection is a small patch of 

 raised black scales. Cilia gray, speckled with white-tipped black 

 scales. Hind wings and cilia fuscous. Legs fuscous, barred with 

 white, tarsi white-tipped. Expanse, 13.5-14 mm. 



