396 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.59. 



COSSULA OMAIA, new species. 



Male. — Palpi brown laterally, white in front. Head, collar, and 

 shoulders white. Thorax purple brown. Abdomen above fuscous, 

 the two last segments and venter white. Fore wings dark purple 

 brown, shaded with reddish brown on inner margin, and with faint 

 darker striae; some white scaling on costal margin; a fine black line 

 from subcostal across middle of cell to submedian; some whitish 

 scaling on either side of discocellular; a large terminal space from 

 veins 2-S olive gray, preceded by some white shading crossed by 

 fine wavy brown lines, and a vertical black line from veins 3-5 

 ending in black points; on the olive gray space are some horizontal 

 black brown markings; a streak along upper side of vein 2, expanding 

 on termen; an irregular streak along vein 4, expanding on termen to 

 vein 5; an irregular subterminal shade between veins 5 and 7. Hind 

 wings fuscous brown. Underneath the margins of wings are broadly 

 whitish. The wings are long and narrow, the termen very oblique. 



Expanse. — 70 mm. 



Habitat. — Omai, British Guiana. 



Type.— Cat. No. 23436, U.S.N.M. 



