REVISION OF SPECIES OF THE GENUS AGROTIS. 97 



cohiiocUmI eitluT above or below, aiid often obsolete. Seeondaries ]>ale, 

 oiitwanlly smoky. IJeiieatli i>ale, iiowilered with ledilish or bhiclcish 

 gniy. Collar (listiuctly bhiek-tipped. 



Expands 34""" ; 1.35 inches. 



IlAiJlTAT. — United ^States, fjenerally; Canada. 



A handsome and easily recognized species, occurring in two distinct 

 forms. The eastern specimens have the outer i>ortion of i)rimaries more 

 or less evidently a deei) red brown, which in the extreme western 

 si)ecimens is replaced by blackish brown. This latter form was described 

 by ]Mr. Grote as beata. The color is the oidy ditference discoverable 

 between the forms, and that is not sullicient for si>ecilic se[)aration. I 

 have seen a nund)er of si>ecimens in which the (piestion as to whether 

 it was luhricans or beaia could only be decided by knowing where the 

 specimens were taken. 



Noctua vocalis Grt. 



IHT'J. Grt., Can. Eiit , xi, ;'>(;, .Upolis. 



\86-2. Grt., III. Essay,.')!, pi. 'J, f 1."., Jr/ro/iv. 



iiivonista Grt. 

 1883. Grt.. Trans. Kaus. Ac. Scl., \iii, 48, A(jro(iii. 



Pale to dark ash gray; transverse lijies simple, darker; a distinct 

 narrow longitudinal basal black line. T. a. line upright, evenly denticu- 

 late. T. p. line sinuate, crenulate; curved outwardly over cell, and 

 inwardly on submedian space. S. t. line obsolete. Oidinary spots 

 traceable, not distinct, concolorous. Orbicular ovate, a sjjur extending 

 toward reniibrui which is normal in size and shai)e, but very incom- 

 pletely outlined. Secondaries smoky, paler toward base. Beneath 

 whitish, powdery, darker toward apices; a distinct common dark line 

 and discal lunule. Head and thorax concolorous. 



Expands .Jj-uS"'"' ; 1.40-1.50 niches. 



Habitat. — Colorado, Nevada, New Mexico. 



The apices of i)rimaries are at least rectangular or even less. The 

 second Joint of palpi is distinctly clavate at til). 



1 have the type of invcnusta, ami a typical specimen, bearing Mr. 

 (xrote's label rocalis, and they are undoubtedly identical; rocali.s is the' 

 paler form, the macidatiou distinct; invoiu.sta is darker, the mticulation 

 not distinct, but line for line the same. Except the ditference in ground 

 color, I lind no distinguishing features, and this is not s[)eciric. 



Noctua opacifrons Grt. 

 1878. Grt., Bull. Geol. Surv., iv, 170, Agrutix. 



Gray, often with a reddish tint, cell between the ordinary si)ots more 



or less distinctly black. Transverse lines simple, black. Basal line 



evident. T. a. line slightly oblicjue outwardly and nearly even. T. p. line 



strongly crenate, its course parallel with outer margin. S. I. line often 



23G45— Bull. 38 7 



