214 BUIjLETIN 123, UNITED STATES NATIONAL, MUSEUM. 



of their genitalia. They all have the same wing shape and pattern 

 with a strongly marked outwardly angulate basal patch and a com- 

 plete well-marked outer fascia with a small cup-shaped indentation 

 on its outer margin at upper inner angle of the ocelloid patch. Ex- 

 ternally they differ only in color. The articulation and shape of 

 aedoeagus and anellus (especially in terracoctana and miscana) re- 

 mind strongly of those organs as they are developed in the genus 

 Gretchena. 



Male genitalia figured from specimen in National Collection from 

 Cisco, California (A. H. Vachell, "June, 1-05"). 



Specimens in National Collection, American Museum, and collec- 

 tion Barnes from California. 



Alar expanse. — 17-19 mm. 



Type. — In American Museum. 



Type locality. — Cisco, Placer County, California. 



Food plant. — Unknown. 



31. EPINOTIA SILVERTONIENSIS. new species. 

 (Fig. 386.) 



Like miscana except : head sordid grayish or dirty ochreous white ; 

 dark basal patch, outer dark fascia, dark shadings above ocelloid 

 patch and at apex and the three outer costal dashes on fore wing, 

 pale semi-lustrous fuscous brown; antimedian area between basal 

 patch and outer fascia, white ; a white shading bordering outer mar- 

 gin of fascia and in subcostal area before apex; cup-shaped in- 

 dentation on outer margin of fascia at upper inner angle of ocelloid 

 patch strongly marked by a small white or metallic spot; vertical 

 bars of ocellus leaden metallic with little or no whitish dusting; 

 hind wings pale smoky fuscous; cilia whitish with dark basal and 

 pale smoky subterminal bands. 



Male genitalia of type figured. 



Alar expanse. — 16-17.5 mm. 



Type. — In collection Barnes. 



Paratypes. — Cat. No. 24845, U.S.N.M. ; also in American Museum 

 Dr. Barnes' collection. 



Type locality. — Silverton, Colorado. 



Food plant. — Unknown. 



Described from male type and 5 male paratypes from Silverton, 

 Colorado (" July 16-23 ") out of a series of eighteen moths all from 

 Dr. Barnes' collection. 



A distinct species easily recognized by its peculiar genitalia. The 

 most characteristic structural difference between it and its nearest 

 ally {rniscana Kearfott) is found in the shape of the uncus. The 

 organ is bifid in both species, but in miscana the forks are long and 

 close together while in silvertoniensis they are short and well sepa- 



