458 NORTH AMERICAN NOCTUID.E. 



Transverse lines geminate. Basal line distinct. T. a. line slightly 

 oblique outwardly, hardly curved between veins. T. a. line with 

 outer line distinct near costa only ; inner line dfistinct, fine, evenly 

 crennlate. S. t. line concolorous, preceded by a dusky shade, its 

 course very even ; the line itself narrow and somewhat remote from 

 outer margin. Olaviform obsolete ; orbicular small, round, concolorous ; 

 reniform somewhat indefinite, inferiorly shaded with dusky. Seconda- 

 ries dirty white, outwardly dusky. Beneath pale, powdery ; a reddish 

 tint along costa ; a common dark line and distinct discal spot. Head 

 and thorax concolorous. Expands 1.25 inches (31'"'"). 



Habitat. — Arizona. 



A narrow ^viuged, sordid, and indefinitely marked form. Distinct 

 from the nearly allied forms by the narrow primaries ; from infracta it 

 differs by the very even t. p. and s. t. lines f from the personata form of 

 pitychrous it differs by the concolorous ordinary spots and small round 

 orbicular. The median space is not darker, and the s. t. line is further 

 from the margin than in pitychrous. One 9 specimen in Mr. Neumoe- 

 gen's collection. 



A. serricornis Smith, sp. nov. 



Structural characters as in tetrica. Keddish oclireous, powdery ; s. 

 t. line with a distinct preceding dark shade ; terminal space incomplett.'ly 

 dusky. Basal and t. a. lines geminate; the latter slightly oblique, 

 outwardly curved between veins. T. p. line punctiform, geminate, the 

 dots venular, small. S. t. line very distinct, slightly paler, but empha- 

 sized by the preceding dark shade ; its course irregularly sinuate. 

 Olaviform wanting ; orbicular obsolete, very faintly indicated by a pale 

 ring; reniform dusky, lunate, obsoletely pale ringed. Secondaries 

 whitish, outwardly dusky. Beneath pale, powdered with reddish and 

 gray ; an iudefined discal spot on each wing. JEead and thorax con- 

 colorous. Expands 1.30 inches (32'"'"). 



Habitat. — Southern California. 



Belongs to W\q intyclirous group and obviously distinct from its allies 

 by the reddish shade to the primaries, the very distinct s. t. line, and 

 lunate dusky reniform. The primaries are rather shorter and broader 

 than in most other species of the genus. Its nearest ally is tetrica. 



A. tetrica Smith, n. sp. 



Anterior tibia spinose, rather strongly armed at tip. Clypeus full ; 

 an obvious central projection which is oval, and somewhat depressed at 

 tip. The antennte of the $ are serrate, the serrations furnished with 

 stiff bristles. Side pieces of $ oblong, obliquely truncate at tip. The 

 inner side of tip closely set with short spinules ; clasper lengthily bifur- 

 cate. Thorax with divided anterior and indistinct posterior tuft. Pri- 

 maries reddish luteous, powdered with grayish white ; very evenly col- 

 ored. Maculation hardly contrasting. Basal dash and olaviform 

 wanting. Basal line evident. T. a. line geminate, vertical, sHghtly 



