22 PROCEEDINGS OF THE NATIONAL MUSEUM. 



half; median shade-line indicated; sub terminal line also, faint, 

 ocherous tinted, becoming black streaks above tornus and close to 

 margin; purple inner area a Uttle streaked; a shght black dash at 

 base on submedian. Hind wing whitish over the disk with diffused, 

 rather broad, gray border, forming a spot at anal angle. Expanse, 

 31 mm. 



Type.— Male, No. 19270, U.S.N .M.; Zacualpan, Mexico, May, 1914 



(R. Miiller). 



RIBALDIA, new genus. 



Male antennae lengthily bipectinate, the tips simple; fore wing 

 with a small tuft on middle of inner margin; vein 5 below apex of 

 cell, accessor}^ cell narrow, vein 6 from its middle, 7 and 10 from its 

 end, 8-9 stalked; hmd wing with vein 5 shghtly above the middle of 

 the cross-vem, 6-7 shortly stalked, 8 close to 7 to near end of cell. 



Type of the genus. — Rihaldia amatame, new species. 



RIBALDIA AMATAME, new species. 



Tan-brown, finely irrorate with dark brown, the median space dark 

 brown, with small elliptical discal spot of pale tan; lines brown, the 

 inner a httle irregular, the outer dentate on the veins; a sub terminal 

 row of diffuse blackish spots. Hmd wmg pale, whitish, costa and 

 margms powdered with blackish, forming a darker spot at tornus; 

 fringe pinkish. Expanse, 39 mm. 



Type.— Male, No. 18867, U.S.N.M.; Guerrero Mill, Hidalgo, Mexico, 

 9,000 feet (Mann and Skewes, gift of B. Preston Clark). 



SCEVESIA, new genus. 



Male antennae plumose; palpi upturned, densely hairy in front, the 

 third jomt porrect and lying on the frontal hairs; legs hairy. Fore 

 wmg with vem 5 from below apex of cell, 6 very shortly stalked, 7-10 

 stalked, 11 on the cell; no accessory cell. Hind wing with vein 5 

 absent, 8 divergmg from cell before middle. 



Type of the genus. — Scevesia Iroidricci, new species. 



Named for Mr. Herbert H. Skewes, one of the collectors for Mr. B. 

 Preston Clark. 



SCEVESIA BROIDRICCI, new species. 



Collar clay-color and brown; disk of thorax dark gray; abdomen 

 slaty gray with dark gray hau-s at base. Fore wmg rather dark gray ; 

 discal mark full, lunate, white, edged with black; subtermmal row 

 of small black dots between the vems parallel to outer margm and 

 near it; some black blotches on basal half of wing, partly denuded 

 m the spechnen ; outer line lost. Hind wing fuscous gray. Expanse, 

 47 mm. 



Type.— M&le, No. 18868, U.S.N.M. ; Guerrero MiU, Hidalgo, Mexico, 

 9,000 feet (Mann and Skewes, gift of B. Preston Clark). 



