50 BULLETIN 38, UNITED STATES NATIONAL MUSEUM. 



Ill genital structure there is a resemblance to ciqnda^ which, combined 

 with the habital resemblance to cujjidissima, emphasizes the correctness 

 of the present association. 



Only a single species is so far known. 



Abagrotis erratica Smith. 



1890. Smith Traus. Am. Ent. Soc, xvii, 41, Agrotis. 



General color, dull ashen gray to brick red, smooth and dense in 

 appearance. Palpi dark at side. Heatl and thorax immaculate. Pri- 

 maries very evenly clothed, the lines not much darker and not promi- 

 nently relieved. Basal line indistinct geminate. T. a. line geminate, the 

 lines very narrow, faint, outwardly oblique, not very much augulated. 

 T. p. line rather regularly outcurved, geminate, inner line narrow, 

 broken below vein 3; outer line punctiform. S. t. line pale, very 

 slightly less so than ground color, relieved by a dusky preceding line, 

 and a general dusky coloring of the terminal space, its course very 

 slightly irregular. In the reddish forms the transverse lines are almost 

 entirely obsolete. Claviform wanting. Ordinary spots evenly dark 

 filled, with a narrow detiuiug line; small in size. Orbicular slightly 

 oval, oblique, reniform, rather narrow, upright, very slightly constricted. 

 Secondaries glistening, smoky fuscous, somewhat paler basally. Be- 

 neath pale i)owdery fuscous, with a darker outer line and discal spot. 



Expands 34-37""" j 1.36-1.50 inches. 



Habitat. — Sierra Nevada, California (McGlashau), California (Neu- 

 moegen). 



Types of this species are with Messrs. Edwards and Neumoegen, 

 and also in the collection of the U. S. National Museum. 



Genus SEMIOPHORA Steph. 



Anterior tibi;xi unarmed, front smooth ; anteuure of male lengthily bi- 

 l^ectinated. 



The two species separated niider the above term agree in the dark red 

 brown color, the tendency to pale, discolorous ordinary spots, obsoles- 

 cence of transverse lines, and in structural details generally. Yet 

 withal they differ habitally to such an extent that their structural iden- 

 tity has been overlooked. 



In elimafa the wings are trigonate, broad and somewhat produced or 

 at least rectangular at the apex. The vestiture consists of flattened 

 hair forming no evident tufts. 



In catherina the wiugs are proportionately narrower, the apex more 

 obtuse. The vestiture is longer, more hairy, also forming no obvious 

 tufts. 



There is no particular agreement in the genital structure of the male, 

 and as has been suggested no very strong character binds the species. 



