267 



with the same submarginal, whitish, obscure band, and with three parallel 

 dusky lines, much as in P. trifasciata. Beneath, much as in the latter species, 

 but the submarginal smoky band is wanting, and there are no lines present, 

 while the hind wings are mottled as usual, but whiter; anterior legs rather 

 dusky, ringed with paler. 



Length of body, $, 0.50; of fore wing, 9 , 60 inch. 



"Rocky Mountains" (Grote). 



The outer line suddenly excurved opposite the discal dot separates this 

 from the other species; the lines an; also all dark, with no tawny-yellow 

 shade accompanying them, and in this respect it differs from all the other 

 species to which it is closely related ; i. e., P. neptata and P. sinuata of the 

 Rocky Mountains and Pacific coast, and the eastern P. trifasciata Pack, and 

 mellistrigata Grote. The outer line is less oblique than in P. mellistrigata. 



PlIASIANE NUBICULATA, sp. 91011. Plate 13, fig. 45. 



2 ?. — Palpi as usual; fore wings more acute at the apex than usual, 

 the costa being very straight and the outer edge more oblique and longer in 

 proportion to the inner edge than in most of the other species. Body and wings 

 white, clouded with dark brown. Instead of the usual two very distinct lines, 

 there are four indistinct parallel lines equally indistinct on account of the 

 speckled and spotted surface of the wing. The two inner lines are parallel 

 and similai - . The two outer lines are nearer together and more or less broken 

 and diffuse, with a white line between and beyond them, the submarginal 

 white line being a little sinuous. The usual marginal, dark, broken line on 

 both wings. Hind wings w r ith no distinct lines, but mottled with brown, and 

 with some ochreous scales ; discal dot obscure. The fringe is long, with two 

 brown hair-lines externally. Beneath, both wings alike, quite uniformly 

 mottled with brown and ochreous, but with no lines, though the discal marks 

 are slightly indicated, not being present above on the fore wings. 



• Length of body, 9,0.35; of fore wings, 0.46; expanse of wings, 105 

 inches. 



Colorado (Sachs) ; Bridger, Wyoming, July 20 (Packard, Hayden's 

 Survey). 



This is a well-marked species, and quite different from any others of the 

 genus, though most nearly related l<> 1'. orUlata. It differs, however, in the 



