220 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxv. 



Smaller, lighter brown, less conspicuously marked ; occurs on the 



Pacific coast salicis. 



8. Smoky brown, powdery, s. t. line well defined, no dark shading from 



the outward angulation to the outer margin; reniform marked 

 with white scales; no black line on collar edusina. 



9. T. p. and s. t. lines form no prominent outward tooth at middle; color 



uniform, terminal space not paler in either sex, reniform concol- 

 orous, with a darker outline 10 



T. p. and s. t. lines form a more or less obviously prominent outward 

 tooth above the middle; coloring more or less mottled; in the male 

 the terminal area more or less obviously paler and contrasting 11 



T. p. and s. t. lines united below vein 7 into a single yellowish brown 



line 13 



10. Very dark brown, almost black, lines velvety black; a pale or white 



spot interrupting s. t. line opposite the cell undularis. 



The median space below costal area is lighter brown, and a lilac gray 



shading extends over the t. p. and s. t. lines from the inner margin 



above the middle of the wing umbripennis. 



Blackish brown with mossy green powder ings, forming a more or less 



obvious band beyond the t. a. line ceruginosa. 



11. In the female very evenly dark brown with darker transverse lines, a 



broad continuous blackish band beyond the s. t. line; in the male 

 the terminal area gray, not blue ; in both sexes the reniform white 



marked insuda. 



Mottled in both sexes; no obvious dork band beyond s. t. line; male 



with terminal area tending to blue; reniform dark, not outlined.- 12 



12. Dark red or mahogany brown, not mottled nor contrasting except in 



the terminal area in males, which is often brilliantly bluish or 

 violet norda. 



Mottled yellow to blackish brown, usually contrastingly marked 

 especially in the male, the terminal area in the latter often sordid 

 and rarely clear in tint minerea. 



Pale leather brown; s. t. and t. p. lines distinct, black, intervening 

 space often black or blackish; a dusky shade often extends from 

 angulation of s. t. line to the outer margin _: lunifera. 



Gray or grayish brown, none of the lines contrasting, and no dusky 



shade from angulation of s. t. line to outer margin Kneosa. 



13. Color rusty grayish brown, powdery, outer margin very strongly den- 



tate unilineata. 



14. Vest it ure of wings smooth, not rough, powdery, nor velvety 15 



Vestiture of wings roughened, powdered so as to obscure the macula- 

 lion or give a velvety appearance 18 



15. Basal and t. a. lines wanting or at least not well defined nor black 1(! 



Basal and t. a. lines well defined, black 17 



10. Larger; a uniform bluish or violel powdering over pale brown: 

 hoary; no well-defined contrasts; reniform not or only a little 

 darker obliqua. 



Smaller, better marked, not hoary in appearance nor powdery; reni- 

 form dusky, sometimes black .metata. 



17. Very smooth and even, median shade very little marked; reniform 



contrasting, black curema. 



Somewhat more mottled; s. t. and 1. p. lines better marked, the s. t. 



space darker; median shade well defined ]i<l<tttt. 



Less mottled, all the lines and spaces well defined; a gray shading 



between t. a. and median shade squammularis. 



