Notes on North American Lepidoptera . 101 



cisely the same characters in which vetusta differs from the 

 same species. 



Anarta membrosa, nov. sp. 



Expanse 33 mra . Length of body 15 mra . Eyes hairy. The antennae of 

 the female simple. The hairy clothing of the palpi and front coarse and 

 uneven. The collar is gray with a black terminal border, tipped with 

 white. The thorax is clothed with mixed black and gray hair. The ab- 

 domen smooth, except a slight low tuft on the first segment. The ground 

 color of the anterior wings is dark gray; all the markings are black, and 

 the lines are followed and the spots filled with clear bluish gray; the half- 

 line thick, black and uneven, followed by a bluish gray shade which ex- 

 tends to the apex, only interrupted by the black diffuse starting points of 

 the lines ; interior line black and distinct, strongly outwardly lobed be- 

 tween the uervules ; at the usual place of the claviform spot a diffuse black- 

 ish shade extends to the exterior line; the median shade is strongly 

 marked on the costa, below much diffused, filling with black the space be- 

 tween the ordinary spots, on the inferior portion of the wings it is nearly 

 obsolete; the usual spots are of nearly equal size, enclosed within black- 

 ish interrupted annuli; the exterior line is fine, distinctly dentate be- 

 tween the nervules and drawn in below the cell ; on the submedian fold it 

 is thickened forming a blackish spot; the subterminal space is more 

 clearly bluish, but there is a blackish blotch in its upper portion with 

 which the usual three bluish ante-apical dots contrast ; the subterminal 

 line light and undulate forming two blunted Hadena-like teeth on the sec- 

 ond and third median branches, it is followed and set off by black shades 

 the most prominent of which are above the teeth ; the fringe distinctly 

 chequered with black and white. 



Posterior wings dark gray with a faint discal dot and median line ; the 

 fringes are black and white, but the colors are more mixed and not so 

 well defined as on the anterior wings. 



Beneath dark gray, with discal dots and a very conspicuous undulating 

 median line ; the fringe is also chequered. 



Habitat. White Mountains, N. H. 



From the collection of the Boston Society of Natural 

 History. 



This species can be distinguished from others of the ge- 

 nus by its large size and stout form, as well as the distinct 

 spots filled with bluish gray, and the uniform dark gray pos- 

 terior wings ; it is slightly larger than A. amissa from Green- 

 land and quite different in appearance. 



