20 



the iuterual vein, feebly dentate in its course, a blackish blotch precedin<>- the lino 

 on internal margin. Orbicular small, round, pale ringed, center concolorous. Ken- 

 iform moderate in size, normal in shape, pale ringed, with a dusky lunule inwardly, 

 else concolorous. Betw'eeu these spots the median shade is marked by a black costal 

 8i)ot, thence continued as a narrow sinuate, faint dusky Hue to the hind margin. T. 

 p. line gemiRate, distinctly marked on costa, thence interrupted, punctiform, marked 

 by black or brown venular dots, outwardly curved over cell. S. t. line narrow, pale, 

 interrupted, irregularly dentate. From the internal margin beyond the t. p. line an 

 obli(iue, blackish terminal shade extends to the apex, somewhat narrowing above 

 the middle. Throngh this dark shade the s. t. line is picked out by pale scales. A 

 row of black terminal lunules, preceded by pale defining scales. Fringes very long, 

 with a central darker line, beyond which they are cut with blackish. Secondaries 

 glistening white, somewhat smoky basall.y, and with a very broad, black outer 

 margin. Fringes white. Beneath wings whitish, with a broad, black terminal mar- 

 gin. Primaries with a whitish terminal line. Fringes white, on primaries narrowly 

 cut with brown, becoming black at tip. Head with a brown frontal line and a brown 

 interantennal tuft. Collar black tipped, and behind it the thorax is powdered with 

 black scales ; abdomen very pale luteous. 



Expands 1.25 inches— 31"'". 



Habitat, Colorado. 



A single female in Mr. Tepper's collection. A very distinct species. 

 The collar is evidently produced medially, and there is a distinct basal 

 tuft. The dark terminal space is characteristic. 



O SIMPLEX, sp. nov. 



Head, thorax, and primaries powdery fuscous, the maculatiou distinct. Basal line 

 distinctly traceable, geminate. T. a. line uj)right or slightly incurved, strongly den- 

 tate, geminate, the outer line black, the inner line fuscous brown, included space 

 somewhat paler. A narrow black line from base to t. a. line. T. p. line faintly gemi- 

 nate, inner line only distinct, black, slightly lunate, exserted over reniform, and some- 

 what incurved below. Claviform very long, almost crossing median space, black 

 margined, with a pale inner line and a concolorous center. Orbicular longitudinally 

 oval, paler ringed, concolorous. Reniform moderate in size, pale ringed, with narrow 

 black margin, the center somewhat paler. A faintly marked shade between the or- 

 dinary spots, less marked below median vein. S. t. line pale, intermitted, irregularly 

 sinuate and dentate, preceded by a series of long sagittate interspaeeal black dashes. 

 A row of black terminal lunules. S. t. space pale at t. p. line, rapidly darkening to 

 the s. t. line. The veins are paler through the darker parts of the wing, and black 

 marked beyond. Secondaries white, semi-transparent, with distinct black outer 

 border. Fringes white. Beneath whitish, with smoky-black outer border. Head 

 with an interantennal blackish line followed by a pale line. Collar with a black line 

 inferiorly, black tipped, and a whitish lino below the black tip. Thorax also sprinkled 

 with black scales. 



Expands 1.4G inches — 36'""'. 



Habilat, Ashley Valley, Utah. 



A single, somewhat rubbed specimen, without fringes to primaries, in 

 Mr. Edwards' collection. 



This species is closely allied to leviSj and intermediate between that 

 and auguHtm. From the former it differs at once by the longitudinally 

 ovate orbicular. Tiie gt ound color is not ochreous, and there are numer- 

 ous nnnor differences. Tlie chief and very strongly marked difference 

 between the two is in the structure of the male genitalia, differences 

 which need not be pointed out hero at present. 



i! 



