1837.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 461 



broad, S. t. Hue narrow, somewhat paler, its course sinuate. A termi- 

 nal row of black dots. The median shade is not well marked and is 

 central to the median space. Clavilbrm concolorous, not distiuctly out- 

 lined. Urbieular round, pale gray. Reniform moderate, kidney-shaped, 

 annulate with gray, centered with ground color. Secondaries pale yel- 

 lowish fuscous. Beneath, whitish, powdered ; a darker discal lunule. 

 Head and thorax coucolorous. Expands 1.23 inches (.'U™""). 



Habitat. — Nevada. 



A well-marked species with rather narrow wings belonging to the 

 messoria group. It is easily distinguished by the widely separated 

 median lines and paler orbicular. A single 9 is in Mr. Tepper's collec- 

 tion. 



A. rufula Smith, sp. nov. 



Anterior tibia spinose, heavily armed at tip; clypeus with a cir- 

 cular protuberance depressed in center ; thorax obsoletely tufted. 

 Antenna $ strongly serrate and bristled ; clasper lengthily bifurcate. 

 Priniaries somewhat yellowish red brown ; median space less yellow- 

 ish ; cell between ordinary spots dark. Transverse lines geminate, 

 included space pale. T. a. line oblique, outwardly curved between 

 veins. T. p. line finely and evenly creuulate, parallel with the outer 

 margin. From this line, which, like the basal space, is ver^^ pale 

 yellowish red, the color becomes evenly darker to the outer margin ; 

 nowhere, however, as dark as the median space. S. t. line narrow, 

 pale, interrupted, sinuate. A row of terminal dark lunules. Clavi- 

 form moderate, incompletely outlined, pale. Ordinary spots pale, with 

 whitish anuuli, moderate in size; the orbicular sub-oval, not com- 

 pletely closed superiorly. Head and thorax concolorous, secondaries 

 blackish. Beneath, rusty, powdery, with broad, diffuse common line 

 and distinct discal spots on all wings. Expands 1.25 inches (31""»). 



^aftitot— New Mexico; 7,000 feet. 



A single $ specimen in good condition from Prof. F. H. Snow. The 

 species is very distinct and easily recognizable by the pale basal and 

 evenly darker median space. It is close to islandica Stgr. (not opipera 

 Morr., which is a very different species), but has more the appearance 

 at first sight of the caniea section of the genus. 



A. pallipennis Smith, sp. nov. 



Anterior tibia spinose, armed with longer terminal spines at tip. 

 Front with an ovate projection depressed at tip. Thorax indefinitely 

 tufted. Antenna $ serrate, serrations bristled ; S genitalia as in^at'i- 

 dens. Primaries very pale luteous gray, powdered with fuscous ; termi- 

 nal space darker. Transverse lines geminate ; t. a. slightly oblique, 

 but little curved between veins ; t. p. line lunulate, outwardly bent on 

 costa over cell, then obliquely in a rigid line to hind margin. S. t. line 

 denticulate, narrow, pale, marked by a preceding dark shade. A very 

 faint median shade. Claviform obsoletely indicated. Ordinary spots 



