REVISION OF SPECIES OP THE GENUS AGROTIS. 203 



Carneades atrifera Grt. 



1878. Grfc., Bull. Geol. Siirv., iv, 17:^, Aijrotis. 

 1880. Grt., Bull. Gcol. Surv., vi, 260, Ayrolia. 



Grayish fuscous, the narrow terminal space somewhat darker. A 

 bhick shade at base; cell black. T. a. line geminate oblique, curved 

 between veins. T. ]>. line obsolete or very faint. S. t. line unusually 

 close to margin, faint. Veins somewhat marked with darker fuscous. 

 Claviform faintly outlined, rather large. Ordinary spots moderate, 

 concolorous, or slightly paler; orbicular oval not quite closed supe- 

 riorly. Secondaries pearly gray, outwardly darker. Beneath ])ale, 

 l)owdery; a distinct discal lunule. llead and thorax concolorous; 

 collur Avith a distinct black line. 



Expands 31-34"""; 1.25-1.35 inches. 



Habitat. — Sierra Nevada, California; Maine. 



A very distinct form, readily recognized by even fuscous color, rather 

 obsolete transverse lines and distinct ordinary spots. It conflicts with 

 none other in this group. The geographical distribution is worthy of 

 note, and indicates that the species will be found in British Columbia. 



Carueades tesselloides Grt. 

 1880. Grt., Bull. Geol. Surv., vi, m), Agrotis. 



Fuscous, washed with various shades of gray ; terminal space usually 

 darker; costal region paler gray. Transverse lines geminate, not dis- 

 tinctly marked course much as usual. S. t. line distinct pale, sinuate. 

 Basal d;)rk dash ditluse, somewhat indistinct; cell variably darker. 

 Claviform outlined, not distinct. Ordinary spots large, gray; orbicu- 

 lar ovate, often not quite complete superiorly. Secondaries whitish to 

 fuscous. Beneath, pale powdery. Uead and throax concolorous ; col- 

 lar with a black line. 



Expands 31-38""" ; 1.25-1.50 inches. 



Habitat. — California, Arizona, Montana. 



A near ally oi silcns, but much darker and more definitely marked, 

 yet the maculation aside from its depth or definition is identical, and I 

 regard the distinctness of the species as not free from doubt, the more 

 so as this si)ecies is exceedingly variable in size, ground color, and dis- 

 tinctness of maculation. 



Carneades sileus Grt. 



187;'). Grt., Cau. Ent., vii, G7, Agrotis. 



Whitish over pale fuscous; costal region and ordinary spots gray. 

 Transverse lines geminate barely traceable. S. t. line obsolete. Ter- 

 minal space slightly darker; veins faintly dark lined. A distinct black 

 basal streak; cell blackish. Claviform faintly marked. Ordinary 

 spots moderate, defined ; orbicular oval, not quite closed above. Sec- 

 ondaries white. Beneath white, powdery. Collar with a black line; 

 head and thorax coucoloroiis. 



