258 REVISION OF MAMESTRA — SMITH. 



Mamestra incurva Smith. 



1887. Smith, Proc. U. S. Nat. Mus., x, 466; Mamestra, 



Dark ash gray, inediau space somewhat darker. Median lines gemi- 

 nate, black but not prominent, included space of ground color. Basal 

 line present, geminate, ending in a short basal black dash. T. a. line 

 with a slight outward curve, only a little sinuate or lunate. T. p. line 

 deeply incurved below the reuiform. S. t. line of ground color, accom. 

 panied by a dusky defining shade, its course irregularly sinuate. Clavi- 

 form concolorous, black lined. Ordinary spots defined, of the pale 

 ground color. Orbicular moderate, irregularly rounded. Eeuiform 

 rather broad and short, its inferior margin absorbed in t. p. line, i^ear 

 the hind angle the s. t. line is marked by a distinct white spot, empha- 

 sized by a blackish line crossing the secondaries at that point. Sec- 

 ondaries white. Beneath, powdery, especially along costa, without lines 

 or dots. Head and thorax like primaries, collar with a black line. 

 Abdomen distinctly tufted. 



Expands 25'"'" (1 inch). 



Habitat. — Colorado, Arizona, New Mexico. 



A well-marked species, with a strong resemblance to anguina in 

 another group. The course of the lines is almost identical and so is the 

 ground colore but the ordinary spots are of a different form and much 

 smaller, and the secondaries in the male are white. The genital struc- 

 ture is that of the group in type, but the harpes have the angle of tip 

 extended as in leucogramma, and the clasper is stout, thick, and irregu- 

 larly twisted, forming two processes from one base. If the maculation 

 were to leave any doubt as to the distinctness of the species, the genitalia 

 would at once dissipate it. With this species leucogramma would seem 

 to seek its allies if the sexual characters can be used to associate forms. 



Mamestra 4-liueata Grt. 



1873. Grt., Buff. Bull., i, 140, PI. 4, f. 15 (? Dianthcecia). 



Ground color somewhat bluish ash-gray, median space darker, often 

 with a reddish suffusion. The lines and spots are as in laudabiUs. At 

 inferior portion of t. p. line there is always a prominent white shade, 

 and on vein 2, crossing the s. t. line, there is a distinct black dash 

 which is characteristic. The secondaries are white in both sexes, the 

 submedian vein strongly marked with blackish toward the margin. 

 Beneath, powdery, with discal spots but no distinct outer line. Head and 

 thorax like primaries, collar with a black line. 



Expands 25 to 27""" (1 to 1.08 inches). 



Habitat. — Arizona, California. 



Nine specimens are in the Museum series, others among the duplicates: 

 California (J.B. S.); Los Angeles County, California, February, March, 

 April, August, October; Alameda County, California, June, August 

 (through C. V. E.). Red number, 119. 



