. HvTORTH AMERICAN EUCOSMINAE. ' 117 



86. EUCOSMA EXCERPTIONANA, new species. 



(Fig. 237.) 



Entire insect a nearly uniform, dark, dull, smoky gray, the fore 

 wings lightened by a fine dusting of whitish scales. Antennae of 

 male finely ciliate. Male costal fold short and appressed. Collar 

 of prothorax, underside of head, and inner sides of palpi, white. 

 Legs and under side of abdomen dusted with white. Cilia of fore 

 and hind wings whitish, with dark basal bands. 



Male genitalia of type figured. 



Alar expanse. — 12-15.5 mm. 



Type.— C^i. No. 24812 U.S.N.M. 



Paratypes. — In National Collection, American Museum, and col- 

 lection Barnes. 



Type locality. — Verdi, Nevada. 



Food plant. — Unknown. 



Described from male type and 12 male paratypes, all collected at 

 Verdi, Nevada, by A. H. Vachell (" June 1-10 " and " June 20-30 "). 



A distinct and easily recognized species. It has been in the col- 

 lections as suhlapidana Walsingham on Kearfott's determination. 

 It resembles but can not be that species. A male paratype of the 

 true suhlapidana is in the National Collection. It has no costal fold 

 and is a true Thiodia. The genitalia are also quite different in the 

 two species. 



87. EUCOSMA BACTRANA, new species. 

 (Fig. 239.) 



Antennae finely ciliate, ashy black above. Palpus very long, ex- 

 tending over twice the length of the head beyond it ; third joint hid- 

 den ; white on inner, dark fuscous on the outer sides. Head and face 

 and thorax whitish, with some dusting of yellowish fuscous scales on 

 thorax. Fore wing tapering from base to broadest part just before 

 termen; termen moderately slanting, very slightly concave; veins 3, 

 4, and 5 not appreciably approximate at termen; grayish white, 

 dusted with ashy-grayish-ochreous and fuscous scales, giving the 

 entire wing an ochreous-gray or pale fuscous-gray appearance ; mark- 

 ings faint ; no distinct basal patch, but in unrubbed specimens a faint 

 fuscous clouding at base of cell; from middle of costa, touching 

 upper outer angle of cell and extending to apex an arc of similar but 

 very faint dark shading ; at apex a large pale but distinctly ochreous- 

 fuscous spot; basal third of costa dark fuscous; underside of wing 

 dull smoky fuscous; cilia gray white dusted with fuscous. Hind 

 wing pale smoky fuscous; cilia paler with a dark basal line. Ab- 

 domen blackish-gray above. Legs fuscous ; paler on inner sides, but 

 not appreciably banded. 



Male genitalia of type figured. 



