4 PKOCEEDIlSrGS OF THE NATIOJSTAL MUSEU^M vol. 75 



Described from male type, eight male and four female paratypes, 

 all from the type locahty (8,000 feet, "July 8-14"). Nearest to 

 griseocapitana Walsingham, which it precedes in my arrangement. 



THIODIA BUCEPHALOIDES (Walsingliam) 



Figure 4 



A series of moths reared (" VIII-14-1925 " and " IX-9-1925 ") from 

 larvae boring in the roots of Clirysotliamnus linifolius Greene and 

 collected at Grand Junction, Colo., by George Englehardt, of the 

 Brooklyn Museum, are now in the National collection. A specimen 

 has also been deposited in the Barnes collection. These correspond 

 to the female in the American Museum, mentioned in my revision of 

 the Eucosminae, and are undoubtedl}'' Walsingham's species or a Col- 

 orado variety thereof. The genitalia show them, to be specifically 

 distinct from qffectalis Hust. 



Male genitalia figured from specimen in the National collection. 



EUCOSMA FANDANA Kearfott 



Figure 12 



A male of this species from the Fernald collection (Colorado, Oslar, 

 "157") is now in the National collection. 

 Male genitalia figured. 



EUCOSMA LATICURVA, new species 



A tawny yellow species with two broad, irregular, longitudinal, 

 silver markings on fore wing. 



Palpus white; second joint shaded on outer side with tawny 

 yellow and fuscous. Head white. Thorax tawny yellow with some 

 white scaling on posterior margin and with posterior two-thirds of 

 tegula white. Fore wing tawny yellow with a broad silver white 

 band starting from base of dorsum (where it occupies all of extreme 

 base except a narrow margin of costa), curving up to vein 12, thence 

 down to mid dorsum, broadening somewhat and then connecting by 

 a narrow spur with a square white patch at tornus, the whole forming 

 a broad serpentine band extending from base to tornus; a broad 

 crescentiform spot occupying outer third of costa and inclosing on 

 costa a small patch of the ground color; an obscure narrow white 

 patch on termen extending from just below apex to vein 5; a sparse 

 dusting of blackish scales scattered along the margins of the white 

 markings and along base of cilia; cilia pale ocherous. 



Hind wing pale smoky fuscous; cilia paler with a dark basal band. 



Male genitalia similar to those of agasizzii except somewhat smaller; 

 in size between those of agasizzii and bolanderana. 



