4f)2 PBOCEEDINGS OF THE NATIONAL MUSEUM. vol.xxii. 



interline. CI aviform small, concolorous, black ringed. Orbicular rather 

 small, round or nearly so, black ringed, more or less yellow powdered. 

 Eeniform narrow, upright, a little constricted centrally, outlined iu 

 black, more or less completely yellow filled and contrasting. Second- 

 aries smoky or blackish brown, paler, more yellowish at base, darkest 

 in the female, fringes yellowish, with a brown interline. 



Expanse, 31 to 33 mm. = 1.24 to 1.32 inches. 



Habitat — Senator, Arizona, April 24 (female), July 16 (male) (Dr. 

 Barnes). 



One pair in only fair condition, the male the larger and best marked, 

 the female so dark and powdery that the contrasts in the male are the 

 more striking. The antennae in the male have the joints well marked 

 and laterally tufted. The species thus belongs in division A,' of the 

 genus, and its broad primaries ally it to detracta; but the apices in the 

 new form are well marked, the outer margin is more oblique, and the 

 wing as a whole is more triangular, resembling rather ohscura and 

 quadrata. 



The under side is smoky, powdery, with a continuous, black, extra- 

 median line, fringes yellowish, a yellowish discal lunule on primaries 

 and a blackish spot on secondaries. 



58. MAMESTRA RAINIERII, new specie's. 



Ground color ash gray with a smoky tinge, head and collar concolor- 

 ous. Thorax with black tipped scales darkening the disc, patagia 

 with a black submargin. Primaries with all the maculation broken; 

 the upper portion of basal space and the large ordinary spots are 

 whitish gray, and contrast enough to form the most prominent orna- 

 mental features. Basal line black, geminate, upright. Transverse 

 anterior line geminate, outer part black, inner smoky, included space 

 whitish gray, broken, outwardly oblique, with small outcurves in the 

 interspaces. Subterminal line geminate, the defining lines obscure, 

 the included whitish space only being traceable across the wing, 

 abruptly bent over the cell and a little incurved below; median space 

 as a whole a little the darkest portion of the wing. Subterminal line 

 made up of white scales, emphasized by a series of black spots in the 

 interspaces, in course only a little irregular. A dusky median shade 

 is marked on the costa. Olaviform large, black ringed, powdered with 

 white. Orbicular large, oval, incompletely black ringed, white 

 powdered. Eeniform very large, broad, kidney-shaped, outlined in 

 black, white powdered. Secondaries uniformly dull smoky, very 

 powdery. Beneath, uniformly smoky, roughly ijowdered, secondaries 

 with a prominent black discal spot. 



Expanse, 35 mm. = 1.40 inches. 



Habitat, — Mount Rainier, Washington (C. Y. Piper). 



1 Proc. U. S. Nat. Mus., XIV, 1891, p. 201, 



