392 ■ [November 



The specimen collected by Mr. Seudder is a little smaller than the 

 Lake Superior specimen ; the two basal spots are narrow linear and 

 much smaller ; the wings are rather more ochreous, and the outer tri- 

 angular spot at the end of the fourth marginal line is distinct, while in 

 the Lake Superior specimen it is very obscure. Both specimens are 

 females. 



Sthenopis purpurascens n. sp. 



Gorgopis purpurascens Pack., Bost. Journ. Nat. Hist. p. 598. (1863). 



$ . Dark sable brown, with irregular bands of silvery purple. Head 

 and body deep sable brown. Fore and hind wings of a purplish silvery 

 hue. At the base of the discal space is a very distinct triangular silvery 

 spot, and in the succeeding space is a more obscure linear spot. These are 

 enclosed in a band of three large sable spots directed obliquely upon 

 the internal angle, the marginal one being semi-ovate. From the origin 

 of the median nervules proceeds a broad oblicjue band to a little beyond 

 the middle of the costa ; there being two unequal costal oblong spots 

 before and at its middle. 



The outer margin including the apex is brown. A submarginal 

 purple silver line as in S. argenteomaculafa, excavated within each in- 

 terspace, especially in the disco-marginal one. A square detached por- 

 tion of this band is isolated upon the costa just before its apex. Tarsi 

 rubicund, tibiae slightly tinged with roseate. 



Beneath both wings are uniformly purplish, except upon the costa, 

 as the markings on the fore wings hardly appear beneath, but there is 

 a marginal row of purplish silver triangular spots. 



Compared with the preceding species, the primaries are fuller to- 

 wards the apex which is more obtuse, and the outer margin is hardly 

 excavated beneath the apex, making the wings less falcate. The hind 

 wings are larger, fuller and more rounded from the apex to the- inner 

 angle. It differs also in wanting any tawny tinge. 



Length of body, 1.62; exp. wings, 4.20 inches. 



Captured by Mr. S. H. Seudder, at the base of Mt. Washington. 



Sthenopis quadri guttata. 



Gorgopis quadriguttatus Grote, Pr. Eiit. Soc. Phil. iii. p. 73. PL 1, f. 6. 9 . (186-t). 



Great Slave Lake,' Mr. Ross," (Grote.) 



a 4 I 



Sthenopis argentata n. sp. 



% . Dark sable brown, fore wings obscurely silvery. Three distinct 



