142 BULLETIN 38, UNITED STATES NATIONAL MUSEUM. 



oblique, open superiorly. Claviform coucolorous, outliued iu black. 

 There is a pale apical patch conuectiug with a pale sbadiug to the t. p. 

 line. Median and submediau veins powdered with white scales. Snb- 

 median pale dash scarcely traceable. Secondaries smoky fuscous, with 

 a faint yellowish tinge. Beneath deep smoky brown, with a darker 

 common line and discal spot. Thorax concolorous, collar interiorly 

 powdered with gray. 



Expands 31""" ; 1.25 inches. 



Habitat. — Colorado. 



This species forms the intergrade between ridingsiana and playigera 

 while sufticiently distinct, I think, from each. The points of resem- 

 blance have been already noted. 



Carneades ridingsiana Grt. 

 1875. Grt., Bull. Buff. Soc. Nat., Sci. ii, 305, Atjrotis. 



The maculation of this species is almost exactly like that of A-dentata, 

 but the color is much darker. The t. a. line is outwardly oblique and 

 takes a wide outward bend below vein 1 ; the s. t. line is not so strongly 

 indented on veins 3 and 4 ; but in all other respects the primaries are 

 marked like -Edentata. Secondaries yellowish fuscous. Beneath soiled 

 whitish, powdery. Head and thorax concolorous with i^rimariesj col- 

 lar inferiorly gray. 



Expands 31-32""" ; 1.25 inches. 



Habitat. — Colorado, Arizona, New Mexico. 



This species except for the much darker color, and almost concolorous 

 costa is identical in maculation with 4:dentata and different from the 

 preceding species of this section by the complete, rounded orbicular. 



It is in the series from plagigera to ridingsiana that is usually con- 

 fused and which requires care iu separation. By close attention to the 

 distinctive characters given there ought to be little trouble in the ma- 

 jority of cases ; but occasionally an unfortunate specimen will occui? 

 which does not agree with anything but itself and which requires tact 

 to place. 



Carneades flavidens Smith. 



1887. Smith, Proc. U. S. Nat. Mus., x, 455, Afjrotis. 

 Dark blackish fuscous ; costa yellowish; submedian dash yellow, and 

 very distinct; s. t. space powdered with white, paler. Basal line indi- 

 cated by black spots on median vein ; t. a. line geminate, distinct below 

 subcostal, outwardly curved to inner vein, then very oblique outwardly 

 to inner margin. T. i>. line single, lunulate, interrupted by the yellow 

 s. m. dash ; its course almost parallel with outer margin. S. t. line nar- 

 row, concolorous, marked by a row of internal black si)Ots and indented 

 by the usual i)ale streaks on veins 3 and 4, and G and 7, the latter con- 

 fluent and forming a ])ale patch. Ordinary spots distinct, normal ; nar- 

 fQwl^ dt>fiued witU Ulagk, within auuulate with yellow centeret| witU 



