NORTH AMERICAN EUCOSMINAE. 53 



Male genitalia of type figured. 



Alar expanse. — 14 mm. 



Type.— Cat. No. 24793, U.S.N.M. 



Type locality. — Eureka, Utah. 



Food plant. — Unknown. 



Described from a single male collected at Eureka, Utah, by Tom 

 Spalding ("IV-21-10 "). Very near in appearance to misturana 

 Heinrich but distinct on genitalia and lacking any of the dark 

 patches on fore wing so noticeable in the latter species. 



33. THIODIA MIGRATANA, new species. 

 (Fig. 116.) 



Palpi short, not projecting more than the length of the head be- 

 yond it; white; tuft on second joint faintly spotted with fuscous. 

 Head and thorax creamy white. Fore wing with vein 2 straight; 

 termen slanting and slightly concave; veins 3, 4, and 5 closely ap- 

 proximate at termen ; creamy white faintly dusted and marked with 

 pale grayish fuscous; from just beyond middle of costa a narrow 

 shading of gray extending outwardl}'^ and joining, above upper inner 

 angle of ocelloid patch, a similar curved band arising from dorsal 

 margin and bordering the inner side of the ocelloid patch ; on costa 

 between this obscure fascia and apex four small short fuscous dashes 

 interspaced by white geminate marks; above ocellus a faint cloud- 

 ing of grajdsh fuscous; on dorsal margin, just behind ocellus, and 

 fusing with the vertical part of the fascia, a thin arc of fuscous 

 scales ; along fold for a short distance from near base of wing a dash 

 of fuscous scales; ocellus white with one distinct longitudinal black 

 streak ; cilia white dusted with fuscous. Hind wing whitish, shading 

 to pale smoky fuscous at apex and termen; cilia white with but a 

 very faint basal fuscous band ; veins 3 and 4 stalked. 



Male genitalia of type figured. 



Alar expanse. — 17-18 mm. 



Type. — In collection Barnes. 



Paratype.—Qsii. No. 24794, U.S.N.M. 



Type locality. — Olanche, Inyo County, California (" Apr. 24-30 "). 



Food plant. — Unknown. 



Described from male type and female paratype bearing similar 

 labels and both from Doctor Barnes's collection. 



It is closest to tenuiana Walshingham but distinguished from the 

 latter by its much larger genitalia, fainter markings and shorter 

 palpi. 



