72 BULLETIN 38, UNITED STATES NATIONAL MUSEUM. 



and only the reniform marked by an indefinite black patch. Tenuescens 

 is irrorate, with reddish-brown scales, and the secondaries are dusky. 

 Simplaria and digna are white, the secondaries also pale; the latter 

 has a black line crossing the collar, a feature wanting in simplaria. 

 In tabular form the species may be arranged as follows : 



Primaries carneous gray, maculate with dark-browu transverse striga. Ordinary 



spots usually distinct and large iNCivis. 



Primaries whitish, irrorate with reddish, reniform iudeliuite, black tenuf.sckns. 



Primaries wliitish, more or less irrorate with black scales. 

 Collar coucolorous, median vein I'elieved by dark scales, terminal space darker, 



SIMPLARIA. 



Collar with a distinct black line; primaries less irrorate with black digna. 



Peridroma incivis Gu. 



1852. Guen.,Noct., i, 274, Agrotis. 

 18.^)6. Wlk., C. B. Mas., Lep., x, :}31, AfiroUs. 

 1874. Grt., Bull. Buff. Soc. N. Sc, ii, 303, Jgrotis. 

 1874. Morr., Proc. Bost. Soc. N. H., xvii, 164, Agrolis. 

 1880. French Can., Ent., xii, 14 (larva sub. uoin. lubricans.) 

 1882. French Can., Ent., xiv, 240, Agrotis. 

 alahanur Grt. 



1874. Grt., Bull. F.uff. Soc. N. Sc, 159, Ajiida. 



1875. Grt., Can. Ent. vii, 10 >. 

 ■hifccta Ochs. 



1816. Ochs., Nachtr., <r, 8, AgroUs. 

 1816. Hiibner, Verzeichniss, 220, Hapalia. 



jn-d'cox t Hbn. 

 181G. Hbn., Samml Eur. Schmett, Noct., 359, Noctua. 

 1816. Hbn., Verzeichniss, 220 = infecfa. 

 1856. Wlk,, C. B. Mus., Lep., x, 331 = iiiciris. 



Ground color of thorax and primaries varying from dark ash to a 

 somewhat reddish gray. Primaries irrorate witli blackish scales, and 

 dark, narrow, transverse striga. As a rule, the 9 is paler than the S . T. 

 a. line obsolete or barely traceable. Claviform rarely outlined in brown, 

 usually obsolete. Orbicular often wanting ; when present annulate 

 with brown and white, center blackish. Eeniform distinct, large, 

 black, annulate with white, and ferruginous. T. p. line usually trace- 

 able by black venular points ; slightly sinuate, and nearly parallel to 

 outer margin ; when completely defined the line is denticulate. S. t. 

 line defined by an inward ferruginous shade, and the red brown termi- 

 nal space. Secondaries white, semi-transparent, anterior and outer 

 margins dusky, blackish. Beneath primaries even, ash gray, second- 

 aries as on upper side. Palpi black at sides, terminal joint miuute. 

 Collar with a broad, dark brown fascia. 



Expands 32-38""" ; 1.28-1.52 inches. 



Habitat. — District of Columbia to Florida, Mississippi, Illinois, 

 Texas, California. 



This species has a distinct though small basal thoracic tuft, and is 

 also distinguished from all its allies by the obviously defined, ordinary 



