282 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxix. 



DYASIA VIVIANA, new species. 



Body light brown. Primaries; basal third whitish, limited b}' a 

 black line slightl}' curved; some light brown irro rations on this space, 

 and a subbasal row of black points; median space brown and buff; a 

 creani}^ space at end of cell containing a kidney shaped brown line; a 

 deeply angular steel grey line, containing buff and brown V-shaped 

 spots, and followed by a brown dentate interrupted line and creamy 

 spots on veins; outer margin lilacine; a submarginal row of velvety 

 brown spots, largest subapically; a marginal brown line, slightly 

 wav3\ Secondaries white; a terminal l>rown line; some dark hairs 

 along inner margin. 



Expanse. — 27 mm. 



Habitat. — Maroni River, French Guiana. 



In some specimens the entire wing bej^ond basal third is dark lilacine 

 grey. 



r^/i^d.— Cat. No. 8639. U.S.N.M. 



Genus NYSTALEA Guenee. 

 NYSTALEA PORGANA, new species. 



Body brown al)ove slightly tinged with reddish; underneath pale 

 buff. Primaries brown, the veins speckled with dark brown andgrey, 

 and some similar irrorationsincell; veins 4, 5, and 6 shaded above and 

 below with ver}^ dark brown; indistinct geminate basal, median, and 

 outer lines; submarginal tine oblique lines below veins 2, 3, and 4; a 

 double row of marginal velvety brown points above and below veins; 

 a large olivaceous brown spot on costa close to apex, partly edged 

 with white and buff, and containing a black streak. Secondaries light 

 brown at base; outer margin broadh'dark brown; fringe buff' at base, 

 terminally white. 



Expanse. — 63 mm. 



Habitat. — St. Laurent, French Guiana; also British Guiana. 



This species comes nearest to N. ehaJea Cramer. 



Type.—C^t. No. 8640, U.S.N.M. 



NYSTALEA SEQUORA, new species. 



Body grey above; the palpi, head, and tegul^ shaded with brown; 

 abdomen with pale buff* lateral tufts. Primaries grey; a l)lack spot 

 at base of median, followed b}^ a fine geminate l)lack line, hardl}' visi- 

 ble on inner margin; some very fine and indistinct medial lines; a 

 black streak on costa, and one crossing base of vein 2, preceded and 

 followed b}' finer bhick lines; a transverse darker grej^ spot at end of 

 cell, partly edged with velvety black; three postmedlal transverse 

 lines preceded ])y some dark lunules and spots below vein 4, and fol- 

 lowed by a black line between veins 4 and 8, and dark brown spots 



