216 BULLETIN 38, UNITED STATES NATIONAL MUSEUM 



Four specimens, three males and one female, all from the collection 

 TT. S. National Miiseum, are before me. Three of these are from Mr. 

 Bruce, collected, one $ , " foothills near Denver," and this is the small- 

 est and an almost immaculate specimen, the venular marks of t. p. 

 line only being distinctly traceable; one 9 , "Platte Canon, 6,500 feet," 

 and this is the largest, the transverse maculation obsolete, the dusky 

 markings of the veins most distinct ; the third specimen is also a $ , 

 " Omaha, Nebr,, June," and this has a distinct reddish shade to the t. p. 

 line, all the maculation very well defined. The fourth specimen, with- 

 out marked locality, isa 5 , which was given me years ago by Mr. George 

 Frank, who had several others in his collection, I think, from Arizona. 

 I suspected at that time that it might be my merliaUs, but it is evidently 

 distinct generically; the specimen is most nearly like the Denver 5 , 

 but is somewhat more distinctly marked. The antenmp. are shortly 

 pectinated and the wing form is like ypsilon. It is the only whitish 

 species I have yet seen referrable to Agroiis as restricted by me. 



Agrotis ingeniculata sp. nov. 



General color of head, thorax, and primaries an ashen fuscous gray, 

 the maculation all distinct. Thorax quadrate, without obvious tuft- 

 ings. Collar with a central whitish line superiorly margined with a 

 brown line tipped with whitish, which is inferiorly margined by black- 

 ish. Patagiic gray margined, the gray limited inwardly by a blackish 

 line. Primaries with basal line distinct, gemiuate, inner line black, 

 included space paler whitish gray. T. a. line distinct, geminate ; outer 

 line black, included space whitish ; at costa the line touches the orbicu- 

 lar in such a waj' that the outer line seems to encircle that spot, resum- 

 ing its course on the costal vein, below which it is even, only slightly 

 sinuate. T. p. line distinctly geminate only on costa, below which only 

 the inner line is distinct, crenulate, almost parallel with outer margin. 

 S. t. line ver}^ irregular, concolorous, limiting an ash-gray apical spot, 

 defined below this by the darker terminal space and a vague, inter- 

 rupted dusky preceding shade, most distinct oi)posite the cell. A very 

 distinct narrow transverse shade line from lower edge of reniform, 

 close to and parallel with t. p. line to inner margin. A series of dark 

 terminal lunules. Claviform short, distinct, black margined, the mar- 

 gin diffuse inwardly and j^artly filling the spot. Orbicular large, some- 

 what irregular, outlined in black, within which is a white annulus, 

 incomplete at the inner costal angle ; center i>aler fuscous. Eeniform 

 large, kidney shaped, black margined, and within this a white annulus; 

 center concolorous with a narrow whitish central line. The cell is 

 darker around the ordinary spots, and a dark blotch precedes the apical 

 jiale patch. Secondaries smoky fuscous, paler basally. Beneath, pri- 

 maries dark, smoky, secondaries grayish powdery; both wings with an 

 outer line and discal lunule ; terminal space rather paler, powdery. 

 Expands 39'""', 1.55 inches. 



Habitat. — Colorado. 



