ART. 8 NORTH AMERICAN EUCOSMINAE HEINRICH 17 



ANCHYLOPERA TENEBRICA, new speciea 



A dark fuscous species with iinicolorous basal patch and outer dark 

 band on fore wing and with the white basal area of costa somewhat 

 obscured by dark dusting. 



Palpus fuscous shaded with sordid white toward base and on inner 

 side. Face, head, and thorax brownish fuscous. Fore wing with basal 

 patch, outer dark band and tornal area fuscous brown more or less 

 dusted with blackish brown; outer subcostal area paler brown; basal 

 half of costa whitish gray with several fine dark brown dashes on costal 

 edge and a slight dusting of dark scales on the whitish ground beneath, 

 the pale costal area continuing as an obscure whitish gray band 

 between basal patch and outer dark band to dorsum and thence in a 

 curve above tornal dark area to termen near tornus ; outer half of 

 costa with eight strong white dashes, the inner one continued as a 

 leaden metallic line along outer margin of outer dark band; at apex 

 a prominent dark spot; ciUa fuscous shading to dirty white at tornus 

 and with a white subapical spot cut by a thin black Une. Hind wing 

 pale smoky fuscous; cilia slightly paler. 



Male genitalia as in spiraeijoliana but smaller, nearly two-thirds 

 size of those of spiraeifoliana. 



Alar expanse. — 12-13 mm. 



Type and paratype. — Cat. No. 41212, U.S.N.M.; paratypes also in 

 Canadian National and Bryant collections. 



Type locality. — Bilby, Alberta, Canada. 



Food plant. — Unknown. 



Described from male type and three male paratypes from the type 

 locality (O. Bryant, June 1, 1924, and June 12, 1924). 



Close to spiraeifoliana Clemens. Distinguished by its darker color, 

 less distinctly white basal costal area, and much smaller genitalia. 



ANCHYLOPERA MIRA, new species 



A species of the hurgessiana-laciniana group with fawn brown 

 basal patch and a red outer bar on fore wing. 



Palpus and face white. Head ocherous. Thorax fawn brown, 

 paler (more ocherous) toward anterior margin; tegula white with 

 slight ocherous shading. Fore wing with ground color bright ocher- 

 ous; basal patch fawn brown with outer margin slanting; outer bar 

 distinctly reddish and containing two black longitudinal streaks; 

 base of costa white, unmarked; costa beyond outer bar marked by 

 several reddish brown dashes interspaced with white and with a 

 large reddish spot at apex; area between basal patch and outer 

 bar of the ground color somewhat dusted with white; cilia pale 

 ocherous with a white subapical spot broken by a slight black dash. 

 Hind wing very pale smok}^ fuscous, almost white in some specimens; 

 cilia white. 



