198 Journal New York Entomological Society, ivoi.xm. 



scales. Reniform kidney-shaped, large, incompletely defined outward and inferiorly, 

 concolorous or a little dusky below. The space between the spots always darker and 

 sometimes black, contrasting. Secondaries white in the male, only a little smoky 

 outwardly in the female. Beneath pale, powdery, primaries always darker and some- 

 times quite smoky, always with a discal spot and sometimes with a partial exterior 

 line ; secondaries usually powdery along the costa only, sometimes with a discal spot, 

 not rarely uniformly whitish. 



Expands : i.i 2-1.40 inches = 28-35 mm - 



Habitat. — Stockton, Utah, September 9 to October 2 ; Volga, 

 South Dakota, without date. 



Seven males and ten females ; most of them more or less defective, 

 from Mr. Tom Spalding and Mr. P. C. Truman. The species 

 resembles albipennis and is a close ally. It differs in that the sexes 

 are similar and the female is not darker than the male. It is more 

 than probable that many of the western albipennis will be found refer- 

 able to this species, and that the true albipennis with the darker female, 

 = nigripennis, will be found to be an eastern and northeastern species. 



Euxoa zembla, new species. 



Ground color a dull, luteous gray with white and blackish powderings. Head 

 and thorax concolorous, varying as the amount of light and dark powdering varies, 

 and sometimes forming obvious transverse lines on the collar. Primaries with all the 

 maculation present but not distinct, everything seeming rather diffuse from the pow- 

 derings. Basal line geminate, outer line broader and darker, on the whole out" 

 wardly oblique, outcurved in the interspaces, the curves unequal. T. p. line gemi- 

 nate on the costa, the outer line lost in the outcurve, inner line lunulate, the points 

 being emphasized so that it sometimes is almost crenulate ; rather abruptly bent on 

 the costa and very evenly oblique from the outcurve to the inner margin. S. t. line 

 pale, chiefly marked by the darker terminal space and sometimes by preceding shades 

 or spots which become most obvious above the hind angle and opposite cell : some- 

 times veins 3 and 4 are a little indented, but that is a variable feature. There is a 

 row of black terminal lunules, beyond which there is a pale line at base of fringes. 

 A median shade-line darkens the space between the ordinary spots and then runs 

 close to and parallel with the t. p. line ; but that is a variable feature, and sometimes 

 wanting. Claviform small, variable in form and in distinctness of outline, never 

 contrasting. Orbicular varies from round to oval, sometimes complete, sometimes 

 open above, with narrow black outline and a broader, more obvious whitish annulus ; 

 the center concolorous. Reniform of good size, kidney-shaped, a little oblique, 

 defined like the orbicular. Secondaries in the male white, with a narrow dusky edge 

 and the veins a little smoky ; in the female usually a little smoky throughout, becom- 

 ing darker outwardly, fringes white. Beneath powdery, primaries quite dusky, all 

 wings with a discal spot. 



Expands: 1. 25-1.46 inches = 31-36 mm. 

 Habitat. — Stockton, Utah, Sept. 4-22. 



