ART. 8 NORTH AMERICAN EUCOSMINAE — HEINRICH 5 



Alar expanse. — 22 mm. 



Type— C&t. No. 41201, U.S.N.M. 



Paratype. — In collection Barnes. 



Type locality. — " Sierra Nevada," Calif. 



Food plant. — Unknown. 



Described from male type from the Fernald collection (" No . 

 8029 ") and one male paratype from the Barnes collection ("Mount 

 Shasta District," California). 



Close to agasizzii Robinson, from which it chiefly differs in the 

 broader and more strongly curved tnedian serpentine band. 



EUCOSMA DAPSILIS, new species 



Figure 9 



A brown species with irregular, moderately broad, silver-white 

 markings on fore wing. 



Palpus fuscous, white scaled beneath toward base and with second 

 joint white on inner side toward apex. Head and thorax ashy fus- 

 cous (the scales brown with white tips) with posterior extremity of 

 thorax whitish. Fore wing ground color light brown; a small white 

 spot on extreme base at middle; from dorsum close to base an 

 irregular white bar extending upward to top of cell at one-fourth; 

 beyond this an oo shaped, moderately broad white band extending 

 from basal thu'd of dorsum almost to tornus; from top of this a white 

 spur extends backward and upward to top of cell, sometimes fusing 

 with the first white bar; at outer extremity of the co band two par- 

 allel white streaks to tornus, extending into the cilia ; on mid dorsum 

 a narrow white spot which sometimes extends backward and fuses 

 with the beginning of the oo band; on costa just beyond middle a 

 cresentiform white band with an included small white costal spot; 

 a larger white costal spot on costa near apex; two strong white costal 

 dashes on termen below apex, fusing at their bases and extending 

 into the cilia; cilia slightly paler than the ground color of wing; 

 underside of wing fuscous with the white markings strongly indicated 

 on outer half of costa and on termen and on cilia below apex and 

 at termen, other white markings faintly indicated; veins 3, 4, and 5 

 well separated at termen. Hind wing fuscous, nearly concolorous 

 with fore wing; underside shaded with whitish; the white forming a 

 rather conspicuous spot on costa near apex; cilia paler with a dark 

 basal band. 



Male genitalia figured from type. 



Alar expanse. — 27-28 mm. 



Type.— Cht. No. 41202, U.S.N.M. 



Paratypes. — In collection Barnes, American Museum, and Canadian 

 National collection. 



Type locality. — Yellowstone National Park, Wyo. 



