4G0 NORTH AMERICAN NOCTUID.E. 



A. trifasciata Smith, sp. nov. 



Auteiior tibia spiuose and moderately armed at tip; dypeus wiih 

 cyliudrical projection, depressed at tip. Primaries crimson brown, some- 

 what powdered with white. Basal line evident. T. a. line single, rather 

 broad, black i)receded by a few pale scales, slightly oblique and some- 

 what irregular. T. p. line sub-lunulate, single, slightly sinuate, followed 

 by pale scales. S. t. line pnuctiform, incomplete ; points pale. A broad 

 dark shade line through median space, from costa between ordinary 

 spots, then beneath reniform, parallel and close to t. p. line. Claviform 

 very short, concolorous. Ordinary spots large, concolorous, of the usual 

 shape expressed by their names, outlined by black scales and narrow 

 yellow annuli. Thorax concolorous. Secondaries dull fuscous. Be- 

 neath, fuscous with crimson and gray powderings. Expands 1.60 inches 

 (40'""). 



Habitat.—'' Mt. Hood." 



One $ specimen from Mr. Tepper's collection. The species is very 

 simply marked and easily recognized. Its near allies are hostoniensis 

 and caenis, of which musoosa is a synonym. The primaries are fully as 

 much pointed as in caenis. 



A. bifasciata Smith, sp. nov. 



Anterior tibia spinose, moderately armed at tip. Clypeus with nipple- 

 shaped projection. Antenna of S serrate and bristled ; side pieces ob- 

 liquely truncate and inwardly spined at tip ; clasper lengthily bifurcate. 

 Thorax a rather luteous brown, primaries of same color at base, pow- 

 dered with black and becoming outwardly darker. Tranverse lines 

 single, broad, black. T. a. line upright, straight. T. j). line with a 

 single wide outward curve and unusually close to t. a. line. S. t. line 

 concolorous, inHeiinite, interru[)ted. A tranverse dark shade from the 

 inception oft. i). line on costa, straight across the wing to the termina- 

 tion oft. p. line at hind margin. Ordinary spots indefinite, small, close 

 together. Orbicular concolorous, marked by a slightly ])aler annulus. 

 Reniform shaded with blackish. Fringes concolorous ; a paler line at 

 base. Secondaries dull fuscous. Beneath fuscous, powdery; an in- 

 complete common extradiscal line. Head with a ferruginous tint. Ex- 

 pands 1.45 inches (30 ™'°). 



Habitat. — Arizona. 



A single S specimen in collection U. S. Xat. Mus. The species is 

 very distinct and allied to comosaRud trifasciata. 



A. orbicularis Smith, sp. nov. 



Structural characters of the preceding species. Luteous gray ; trans- 

 verse lines distinctly geminate, dark fuscous ; stigmata defiued, paler. 

 Basal line defined, marked by black points beneath median vein. T. 

 a. line upright, denticulate, the included space marked with gray. T. 

 p. line even, very narrowly crenulate, its course parallel to outer mar- 

 gin, to which it is unusually close, making the median space very 



