113 



tica, Grote (Had. W. latinnm J, of authors), excepting the W-shaped 

 marking of the subterminal line. From this species it can also be 

 distinguished by the angular projection on the sides of the thorax, 

 by the non-hairy eyes with lashes and the thoracic tuft. 



Genus MAMESTRA, Ochsenheimcr. 



Mamestra assimilis (nov. sp.). 



Expanse, 38 m. m. Length of body, 18 m. m. 



Front and palpi black. Eyes hairy. Thorax and collar black, the former 

 without tufts. Abdomen conical, gray, with a flattened hairy tuft on the first 

 segment, and the usual lateral tufts, which together with the anus are tinged 

 with carneous. Anterior wings dead black ; lines subobsolete, clear black ; 

 spots concolorous, surrounded by fine intense black lines ; beneath the median 

 nervure a slender basal longitudinal streak. Interior line most prominent on 

 the costa, forming there an angle the apex of which nearly reaches to the 

 orbicular spot ; below, the line is produced in a regular curve between the 

 median and submedian nervures ; from the center of this curve projects the 

 the claviform spot, small, acutely triangular and very distinct ; below the sub- 

 median nervure the line forms a spade-shaped tooth; ordinary spots large, 

 without internal aunuli, the orbicular slightly elliptical, the reniform ap- 

 proaching the shape of the figure eight, constricted in the middle on both 

 sides. Exterior line dentate between the nervules, of the usual form. Sub- 

 terminal line represented by black diffused spots which precede and partially 

 surround a series of cream-white spots. Those of the latter between the fifth 

 and sixth subcostal, the sixth subcostal and the first median, and the first and 

 second median nervules are small, punctiform and distinct; that between the 

 second and third median nervules is obsolete, and that between the third and 

 fourth is united with the one at the inner angle, forming a large irregular 

 blotch, sometimes filling nearly the whole angle. The nervules are of a little 

 deeper black than the ground color, the inner margin is slightly tinged with 

 carneous and there are three or four costal subapical white dots. The poste- 

 rior wings are white, the nervures strongly marked with black, and with a 

 large discal dot and a broad, black terminal band. Anterior wings beneath, 

 gray, with numerous white atoms. The entire apex and terminal space are 

 purple carneous. Posterior wings white, with a conspicuous discal dot, and a 

 broad costal and terminal carneous gray shade band, obsolete at the anal angle. 



Hob., Massachusetts. Collection of II. K. Morrison. 



The uniform dead black anterior wings with the markings in 

 brighter black, will at once separate from the rest of the Noctuidae 



Bl'L. BUr. SOC. NAT. SCI. (15) JULY, 18T4. 



