98 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 42. 



beyond it; a dark line from apex curves inward to vein 6, then 

 downward curving across the light field into the ocherous area where 

 it ends parallel to inner margin, crenulate, followed by a lighter area; 

 from vein 6 a branch runs out nearly to margin, then is continued as 

 a row of submarginal dots toward tornus. Hind wing whitish straw- 

 color, dusted with brown, especially on inner margin; veins darker. 

 Expanse, 38 mm. 



Type.— Male, No. 14089, U.S.N.M., Tuis, Costa Rica, June, 1909 

 (W. Schaus). 



MICROPHOBETRON, new genus. 



Antennae long, thickened and flattened, simple; hind tibiae with 

 four long spurs; palpi upturned, not reacliing vertex; form slender, 

 abdomen short, tapering; head small but prominent; fore wing with 

 veins 8-9 stalked, all the rest from the cell. 



Genotype. — MicropJiohetron rehella, new species. 



MICROPHOBETRON REBELLA, new species. 



Bronzy brownish black, the hind wings a little lighter than the 

 fore wings. Expanse, 11.5 mm. 



Type.— Male, No. 14090, U.S.N.M., Sixola Eiver, Costa Rica, 

 March, 1909 (W. Schaus). 



Genus VIPSOPHOBETRON Dyar. 

 VIPSOPHOBETRON DENDERIA, new species. 



Collar ocherous brown; thorax dark brown; fore wing very dark 

 brown at the base, sharply limited outwardly from middle of costa 

 to tornus, the edge of the dark area incurved centrally; on inner 

 margin a semilunate area of leaden brown with black flecks in its 

 upper edge; apex ocher-brown with a small dark spot before the 

 tip. Hind wing and abdomen brown. Expanse, 24 mm. 



Typ)e.— Male, No. 14091, U.S.N.M., Sixola River, Costa Rica, 

 March 14, 1909 (W. Schaus). 



Genus PSEUDOVIPSANIA Dyar. 

 PSEUDOVIPSANIA MELANOIS, new species. 



Collar and disk of thorax pinkish and gray; thorax and base of 

 abdomen leaden gray; abdomen black, the anal tuft orange; fore 

 wing long, produced, leaden black, the discal area subhyaline, in 

 wliich the veins bordering the cell are tliickened with black scales. 

 Hind wing similar, the translucent area extending to the margin; 

 hind wing small, produced-trigonate. Expanse, 28 mm. 



Type.— Male, No. 14092, U.S.N.M., Tuis, Costa Rica, August, 

 1909 (W. Schaus). 



