26 1 



The front of the head is much fuller than usual, the wings are more pointed, 

 and the palpi are quite short, projecting but a little distance beyond the front. 

 Body and wings pale-ash, with a testaceous hue; a little deeper hue on the 

 outer edge of both wings. The costal edge is tinged faintly with reddish- 

 ochreous, and marked with minute striga*, most distinct on the extreme edge. 

 A square whitish spot on the inner third of the costa, and an outer, white, 

 distinct line broadest on the costa, becoming very faint before reaching the 

 inner edge of the wing, bent on the first median venule. The fringe on 

 both wings is white, checkered with large, square, brown spots; no discal 

 spot above or below on either wing. Under side of costal region and outer 

 edge of (he fore wings bathed with yellow testaceous; veins distinct, testa- 

 ceous ; extreme costal edge dark, with white strigas. Outer white line faintly 

 reproduced, making with the white apex a rude V, inclosing a triangular 

 mottled space; remainder of the wing clear of scales. Under side of hind 

 wings marbled beautifully, the ground-color being white, with dark strigae 

 arranged in broken bands, and with diffuse ochre-yellow blotches; a central, 

 broad, white baud, angulated on the independent venule, bordered on both 

 sides with yellowish spots, especially on the venules, and the winy within is 

 densely strigated, with the median area white with a few brown strigae; from 

 the inner angle arises a broad, interrupted, white band, which terminates on 

 the first median venule. The outer edge of the wing is sprinkled with brown, 

 especially on the apex and costa; elsewhere it is pure white. Prothoracic 

 scales and patagia reddish-ochreous ; middle of thorax and abdomen con- 

 colorous with the upper side of the wings. 



Probably from near the snow-line, as our New England species was 

 found by Mr. Sanborn on the summit of Mount Mansfield, Vt 



Length of body, 50; fore wing, 0.75; expanse of wings, 1.60 inches. 



Nevada (Edwards). 



Marmoptehyx tkssellata Packard. 



Marmoptcryx tcssellata Pack., in Hayden's Aim. Rep. Geol. Sur. Terr., 552, pi. 1, fig. <i. 1875. 



I 9. — Compared with M. marmorata from Cali- 

 fornia, its nearesf ally, the fore wings are rather nar- 

 rower and the outer edge more oblique, while the apex 



■i* 



VSV 



is more pointed. The head is exactly as in thai species, 

 Harmopteryx lesseiiata. th c front being full and bulging. Head and thorax pale- 

 gray, with a reddish tinge. Palpi blackish at lip. Front of head with a slight 



