49'2 NORTH AMERICAN NOCTUID.E — SMITH. 



Perigrapha normalis Grt. 



Buf. Bui., 1873, 2, 162 (Acerra); List, 1875, pi. f. 4 ; C. E. 1879, 11, 27 (Graphiphora), 

 id. 1881, 13, 133. {Perigrapha.) 



Very even mouse-gray, transverse lines obsolete. Basal line faintly 

 indicated. Ordinary spots confluent, very large, nearly equal in size 

 and shape; superiorly open, else with a narrow whitish defining line, 

 outwardly bounded by a blackish shade, which interiorly shades into 

 the ground color : the whole included in a very faint, pale V? which 

 does not reach the inner margin. A row of small terminal dots, and a 

 paler terminal line. Secondaries eveuly fuscous. Beneath powdery 

 fuscous, with a common darker line and discal spot. Head and thorax 

 concolorous ; collar slightly paler. The harpes of male are somewhat 

 curved, and narrow regularly to tip, where they are acute. Clasper 

 moderate in length, robust, not much curved, inwardly with an obtuse 

 tooth. Expands 1.45 to 1.50 inches (35 to 37 mm ). 



Habitat. — California. 



This is an easily recognizable form. The lack of all maculation, ex- 

 cept tlie large confluent ordinary spots, forms a distinctive feature. 



Perigrapha inferior Smith. 

 Proc. U. S. Nat. Mus. 1887, x, 477. 



Dark ash gray, all the maculation obsolete. Ordinary spots fused, 

 slightly paler, but hardly defined. The primaries are crossed by fine 

 brown striga3, hardly visible except on close examination. Secondaries 

 uniformly fuscous. Beneath powdery ; secondaries with a large discal 

 spot. Head and thorax concolorous with primaries ; collar interiorly 

 with a reddish tint. The male genitalia are most nearly like muricina, 

 but the inferior branch of clasper is very short, and acutely terminated. 

 Expands 1.20 inches (30 mm ). 



Habitat. — California. 



Easily distinguished by the almost uniformly dark gray color, the 

 fused ordinary spots scarcely paler. The male type is with Mr. Ed- 

 wards. 



Perigrapha plusiiformis H. Ed. 



Pr. Cal. Ac. Sci., v. 267 (Stretchia); Grt. New List (Perigrapha). 



Pale ash gray; ordinary spots slightly paler, confluent; the reni- 

 form with a rusty central shade. A short basal black dash. Basal 

 line rather faint, but discernible. T. a. line fine, marked only above 

 the middle. T. p. line punctiform. S. t. line even, narrow, pale, 

 marked by preceding brown scales. Secondaries uniformly brown 

 fuscous. Beneath, somewhat purplish with black irroration; a black 

 discal spot on all wings. Head and thorax concolorous, tegula3 black 

 tipped, collar inferiorly purplish. Harpes of male broad, at tip trunc- 



