251 



uniform fawii-t'olor; hody and hind winirs ]ialcr. An inner, slrai<r|il, lirouii 

 line, edged externally willi yello\visli-l)r()\vn ; outer line sli<i;|itly sinuale. 

 Discal dot large lanceolate-oval; two coiispicnoiis dark spoth midway l)etwecn 

 the outer line and the edge of the wing, one being sul)apical in .position. 

 Fringe on l)oth wings a little darker than the wings themselves. No markin<rs 

 on hind wings; no discal dot. Beneath, a tlecided oehreous tinge, no lines, 

 discal (lots distinct on hoth wings; iiinge consideralily darker than the rest 

 of tlu' wing. The female dilfers from the male in the lines Ijcioir llirl her 

 apart. 



Length of i)()(ly. J, ().f)0, 9, OlyU : of jiire wing, i . ().(.(). 9, O.GG ; 

 expanse of wings, 1. 10 inches. 



Sanzalito, Oal., August 7 (Behrens'): ('a]it()rnia (Kilwards); Yosemite, 

 October 19 (T. L. Mead). 



This species differs from murcescai-'ui (luen. in the much moie ])ectinated 

 antennso and the absence of lines on the under side of the wings, wliicii, 

 beneath, are clear oehreous, not speckh'd witli chirk scales: while the two 

 Sfjots with the discal spot arranged in a triangle give it a characteristic 

 appearance. 



TiiAMNONOMA MARCESCARiA Packard. Plate U, tig. 69 



Balia marcciicarUi (iuuu.. Plial., ii, '^•■>, 1857. 



Halta cineraria I'aeU., Proc. Host. Soc. Nat. Hist., xiii, :i'J2, 1871. 



6 S and 6 9 . — This is an ash-colored species, with slender pectina- 

 tions ; the fore wings distinctly tixlcate, and the hind wings more distinctly 

 angled than in any other species of the genus. Certain individuals I had 

 regarded as di-stinct, and described under the name cineraria; but the 

 addition of more material from Mr. Behrens shows that they are not diderent 

 from the true marce.sauia. I append my original de-scription to show how 

 certain individuals dilfer iVoni others. 



Pale ash-gray. Male. Head and palpi ash; wings a little paler, some- 

 times with a testaceous hue. The l()re wings are marked just like T. mar- 

 cescaria, though the line is less distind, but they are narrower and more 

 excavated just below the apex. The strigic arc a little thicker on the costa 

 than elsewhere. There are no indications of a basal line ; the outer line is 

 situated nearer the middle of the wing than in the other species; in the 

 middle of the wing on the line is a black dot. Just l)eyoiid the line is a semi- 

 translucent broad band. Discal dot as in the other species. Beneath, the 



