NORTH AMEEICAN EUCOSMINAE. 49 



Distribution according to specimens in National Collection, Amer- 

 ican Museum, and collection Barnes: British Columbia and Cali- 

 fornia (Los Angeles, San Diego, San Luis Obispo, and Shasta 

 Retreat). 



Alar expanse. — 12-17 mm. 



Type. — In British Museum. 



Type locality. — Arizona. 



Food plant. — Unknown. 



26. THIODIA INFLUANA, new species. 

 (Fig. 93.) 



Like apacheana Walsingham except that dark spot near base offi 

 dorsal margin of fore wing is less sharply defined and forms more: 

 or less of a basal patch, not reaching to costa, however, and some- 

 what separated from extreme base of wing by a shading of the 

 whitish ground color; also by the more grey brown color of the 

 dark marldngs ; in apacheana the dark markings are reddish brown ; 

 the ocelloid patch is less distinctly triangular than in apacheana and 

 contains two short parallel longitudinal black dashes; also the 

 fuscous clouding directly over the ocelloid patch is more diffused^ 

 spreading out and fusing into the dark post median fascia. Head 

 white. Fore wing with veins 3 and 4 very closely approximate^ 

 often fusing before termen; cilia greyish fuscous with a narrow 

 basal white line. Hind wing with veins 3 and 4 united; dark 

 fuscous ; cilia a trifle paler with a broad median and narrower basal 

 dark line. 



Male genitalia of type figured. 



Alar expanse. — 16-18 mm. 



Type. — In collection Barnes. 



Paratypes. — Cat. No. 24792, U.S.N.M. Also in American Museum 

 and collection Barnes. 



Type locality. — Shasta Eetreat, Sisldyou County, California. 



Food plant. — Unknown. 



Described from male type and three male and two female para- 

 types from Doctor Barnes's collection, all labeled Shasta Retreat 

 and dated as follows : Type and one other male, " July 1-7 " ; 2 

 males, " June 16-23 " ; one female, " June 8-15 " ; one female, " June 

 24-30." 



In addition to the types I have before me several specimens from 

 Aweme, Manitoba, bearing various June dates. These average a 

 little smaller than the California ones and may represent a distinct 

 local race. They are easily confused with Aweme specimens of 

 misturana Heinrich, but may be distinguished by their genitalia. 



