464 PROCEEDINGS OF THE NATIONAL MUSEUM. 



pressed and vestiture disarranged. This species is unlike any of the 

 species heretofore described and is without close allies. It belongs to 

 the vindemialis series on superficial characters, but has a closer resem- 

 blance to Agrotid forms like Noctua pyrophiloides, the normal mark- 

 ings of the messoria group of Carneades being combined with the dif- 

 fuse shadings of the first-mentioned form. 



60. MAMESTRA YAKIMA, new species. 



Ground color ashen gray, powdery. Head darker, with a more or 

 less obvious dasky interantennal line. Collar with a series of darker 

 scales forming a vague median line. Patagia with a blackish submar- 

 gin. Primaries with all the markings obscured, tending to but not 

 really strigate, paler rays on veins 3, 4, 6, and 7 cutting into the darker 

 terminal si:)ace. Olaviform vaguely marked and extending to the mid- 

 dle of the wing. Orbicular round or oval, small or moderate, concolor- 

 ous, marked by a slightly paler ring. Reniform large, broad, kidney- 

 shaped, but larger inferiorly and there filled with leaden gray which 

 makes it fairlj^ obvious. A series of small black terminal lunules. 

 Secondaries white, with a blackish outer border, which shades into the 

 white well before the middle, veins blackish, fringes white. Beneath 

 white, a little powdery toward the margins, primaries with a dusky 

 discal lunule. 



Expanse, 30 to 36 mm. =1.20 to 1.44 inches. 



Habitat. — Yakima, Washington (C. V. Piper). 



One male and two females, in only fair condition. On very close 

 examination the maculation seems to be of the trifolii type, though so 

 nearly obsolete that this is difficult to recognize; at all events the den- 

 tations of the subterminal line refer it to that series. The male anteunsB 

 are ciliate and the species is peculiar in having a little pointed frontal 

 protuberance, so small as to be easily overlooked, yet actually existent. 

 This, so far as I am aware, is unique in the genus. 



T^/pe.— Oat. No. 4836, U.S.N.M. 



61. MAMESTRA DILATATA, new species. 



Ground color white, overlaid by smoky, luteous, olivaceous, and black 

 scales, so as to leave the white base visible only in the lines, ordinary 

 spots, and basal space of x)rimaries. Head yellow, with a gray interan- 

 tennal tuft. Collar white, tipped with smoky, with a broad, black 

 median line. Patagia white, margined with black, the disk mottled 

 with white, black, and olivaceous scales. Primaries with basal space 

 superiorly white, inferiorly gray. Basal line geminate, black, marked 

 on the costa, the inner portion normal, the outer dislocated and form- 

 ing an oblique blackish mark in the submedian interspace, separating 

 the white and the gray shading. Transverse anterior line geminate, 

 black, included space white, oblique to the submedian interspace, 

 inwardly anguJate on vein 1, outcurved below. Transverse posterior 



