76 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 42, 



oblique on costa, forming two broad teeth opposite cell, .then curved 

 to inner margin, finely black-edged on both sides; terminal space 

 soiled clay-color, obliquely brown from apex to median vein; sub- 

 terminal line whitish, broadly waved and minutely crenulate, darker- 

 edged, cutting off a small triangle from the apical dark shade. Hind 

 wing grayish-shaded, the veins darker. Expanse, 19 mm. 



Type.— Male, No. 13951, U.S.N.M., Tehuacan, Mexico, September, 

 1910 (R. Muller). 



Genus TARACHE Hubner. 



TARACHE INTERPOSITA, new species. 



Head and collar white; thorax leaden gray; fore wing broadly 

 \rhite along the costa, the inner area leaden gray with bronzy brown 

 scales intermixed; a broad stripe of gray crosses the costal area at 

 basal third, and there is an indication of another at apical third ; the 

 upper edge of the gray area is expanded at the positions of orbicular 

 and reniform, although these spots are not otherwise defined and ter- 

 minally the gray runs obliquely to apex. Hind wing whitish with a 

 wash of gray, especially on the veins and apex. Expanse, 19 mm. 



Type. — Female, No. 13952, U.S.N.M., Tehuacan, Mexico, June, 

 1910 (R. Muller). 



This species was determined by Sir G. F. Hampson, who labeled it 

 "Near expolita Grote." 



TARACHE VITTAMARGO, new species. 



Head and collar silky white; front and thorax dark purple; 

 abdomen whitish; fore wing dark purple, the costa broadly snow- 

 white to apical sixth; the lower edge of the white costal stripe is a 

 little irregular and indented, its termination is parallel to the outer 

 margin; the dark purple field is transversely marked with two darker, 

 more reddish lines, corresponding to the usual inner and outer lines; 

 anal angle broadly lilacine whitish, with detached gray-purple clouds 

 along its inner edge and with two small black spots on the termen; 

 fringe concolorous with the adjacent markings, being dark purple on 

 upper third, then lilacine whitish, then purple on lower third. Hind 

 wing white with straw-yellow tint. Expanse, 25 mm. 



Type.— Male, No. 14239, U.S.N.M., Tehuacan, Mexico, April, 1911 

 (R. MiiUer). 



Genus LITHACODIA Hubner. 

 HTHACODIA MUSTAPHA, new species. 



Fore wing gray, the claviform, orbicular and reniform outlined in 

 black, but indistinct; a blackish costal wedge between the discal 

 stigmata and a similar dark shade about the claviform ; subterminal 

 line broadly relieved by white on its lower two-thirds, itself blackish, 



