a".- ( )i-lu<iil:ir ;il\\.-iys prisciil. Iiinic somclimcs 

 mil roniul, ( .■iin| ml l;i nl' cl.-ispcr cliilcii 

 ,,11^1 . I iicliocci niidc.s 



1)'. ( )ilu(iil.ir lu-fscjit (ir absent, if |)rcs( iil siiuiU 

 .mihI round. ( .•nii|)iill.-i d' claspcr iiicMnbranc- 

 uus) Xefasna 



b'. — Size inodcralc (size of cii pidtt) , 



a''.- l-'./islcrn niaUrial. (ainpiilla of claspcr clii- 



Icnous ) Ai\ch()C(di(>ides 



b'. — Western material, (must be niii down gcni- 

 talicalh. or liy careful comparisons, as no 

 eliaraeters hold to separate from "placida" 

 forms except general appearance. All speci- 

 mens with a median shade are " pJacida."* 



c*. — Small size. 



a". — Eastern material. 



a''. — Primaries eonspieiiously nari'ow for their 

 length, with a shiny, glossy, satiny appear- 

 ance due to" being very smoothly sealed; 

 transverse maculation often obscure; never 

 with a median shade; terminal area usually 

 eoncolorous with median area ; rarely 

 slightly lighter, (runty specimens of 

 ciipkla) (ampulla of clasjDer chiten- 

 ous) Anchocelioides 



b". — Primaries not conspicuously narrow for their 

 length, sometimes shiny, but never with a 

 sleeky glossy, satiny ap^Dearanee ; transverse 

 maculation usually distinct; at least a trace 

 of the median shade usually present; termi- 

 nal area often blueish. not eoncolorous with 

 median area, (ampulla of clasj'er membrane- 

 ous Placida 



b". — Western material, (must be run down geni- 

 talically to separate from eloseh' approach- 

 ing "placida" forms or very carefully com- 

 ])ared. exce])t ; — 



a''. — Median shade present, (most) Placida 



b''. — Median shade absent, 



a'. — Ground color black, suffused, shining; or- 

 bicular clearly outlined with whitish, small 

 and round, (usually from Utah or Califor- 

 nia: species — ditanca only) Nefascia 



b'. — Not so, — * 

 *This leaves merely the Placida and Nefascia Groups with 



84 



