204 REVISION OF MAMESTRA SMITH, 



daries are whitish, subbyaline, outwardly and ou the veins shaded with 

 blackish or fuscous; beneath pale, powdery, secondaries with a discal 

 dot. Head and thorax concolorous with primaries; patagiie black, 

 marked at outer margin. 



Expands 45-50 millimetres (1.80 to 2 inches). 



Habitat. — Colorado, California. 



Two specimens are in the Museum collection, both from Colorado, one 

 i(Deuver) collected by Bruce, the other, collection J. B. S. 



The species is easily recognized by its large size, pale color of pri- 

 maries and white secondaries. The male antennae are but slightly 

 serrated, laterally ciliated, and somewhat thickened. 



The genital pieces together form almost a cylinder. The harpes are 

 rather slender, strongly dilated at the tip, furnished inwardly with a 

 stout spine and numerous spinules. At the middle of the harpes then 

 is also a strong spine. The clasper is strong, corneous, but little curved, 

 and forming the inferior margin of the whole piece. 



Maniestra rogeiihoferi Moeschl. 



1870. Moeschl. , Stett. Ent. Zeit. , xxxi, 269 ; Mamestra. 



Rather sordid, fuscous gray, all the lines marked, obsoletely gemi 

 Bate ; ordinary spots moderate, concolorous. In the general course ol 

 the lines it agrees with imbrifera, but it differs in the less contrasting 

 terminal space and narrower s. t. line, which is marked by a row of dart 

 lunules. The claviform is only faintly indicated. The distinctiv( 

 feature of the species is the very distinct median shade, and the specie; 

 is nearer to nimbosa than imbrifera. 



Expands 47 millimetres (1.88 inches). 



Habitat. — Labrador.. 



No specimens are in the Museum collection. By the courtesy of Mr 

 Moeschler I was enabled to examine the type, which is a male in goo( 

 condition. The secondaries are uniformly fuscous, and the antenna 

 joints are distinctly serrated and furnished with bristly tufts. Th( 

 genitalia are very like those of discalis, but the tip of the harpes ii 

 truncated, not rounded. The single type specimen could not be mor* 

 satisfactorily examined as to structure, but it is very recognizable, an( 

 obviously distinct from the allied forms. 



Mamestra nimbosa 6n. 



1852. Gn., Sp. Gen. Noct., ii, 77 ; Jplecia. 



1857. Wlk., C. B. Mus., Lep, Het., xi, 555; Eurois. 



187.3. Grt. , Buff. Bull., i, 102 ; Ma7nestra. 



1875. Speyor, Stett. Ent. Zeit., xxxvi, 142 ; Mamestra. 



Primaries whitish gray, more or less powdered with black scales 

 transverse lines evident, black, geminate; ordinary spots large, con 

 colorous, outlined by a narrow black line; no distinct basal line; t. a 

 line lunulated between the veins, as a whole but little outcurved, i 



