220 PROCEEDINGS OE THE NATIONAL MUSEUM. vol.40. 



fuscous irregular line runs to dorsal edge near base. Extreme tip of 

 wing dark bronzy brown. Cilia white. Hindwings dark fuscous with 

 whitish cilia. Abdomen dark fuscous above; underside and legs 

 ocherous. 



Alar expanse. — 19-22 mm. 



Habitat. — St. Laurent, Maroni River, French Guiana. Wm. Schaus, 

 collector. 



Type.— Cat. No. 13581, U.S.N.M. 



STENOMA THORISTES, new species. 

 Plate 9, fig. 22. 



Labial palpi whitish ocherous, shaded with brown exteriorly. 

 Face light ocherous. Antennre brown. Head drab. Thorax rich 

 brown anteriorly, light drab posteriorly. Forewings light drab 

 with a purple sheen and with deer-brown markings; basal third is 

 mottled with brown scales except along costa in ill-defined and some- 

 what variable pattern; central part of the wing is unmottled, except 

 for a small brown costal spot ; on the apical third is a broad ill-defined 

 brown fascia across the wing, margined externally by an outwardly 

 •curved line of small black dots; around the terminal edge and reach- 

 ing round both on costa and dorsum is a marginal row of more promi- 

 nent small black dots. Cilia drab. Hindwings light dirty straw- 

 yellow with a marginal row of small, black, nearly confluent dots. 

 Abdomen ocherous fuscous above; underside light ocherous; anal 

 tuft deep ocherous. Legs ocherous; hind legs with first tarsal joint 

 strongly tufted as in S. elegans Zeller, 8. loxotoma Busck, and S.fra- 

 ternella Busck, with which species it otherwise has no close affinity. 



Alar expanse. — 29-34 mm. 



Habitat. — St. Jean, Maroni River, French Guiana. Wm. Schaus, 

 collector. 



Type.— Cat. No. 13582, U.S.N.M. 



Cotype in British Museum. 



Allied to Stenoma immundum, Zeller and S. sororium Zeller, differing 

 in the brown markings, not present in those species. 



STENOMA MARONI, new species. 

 Plate 9, fig. 23. 



Second joint of labial palpi dark purplish brown; tip and apical 

 joint whitish. Face ocherous white. Head and thorax dark brown. 

 Forewings light brown with a broad dark reddish brown transverse 

 hand occupying the larger middle part. This dark brown shade is 

 well defined and extends from base to apical fourth of dorsum 

 obliquely across the wing to outer half of costa with tolerably parallel 

 edges; at basal third is a light ocherous gray slightly dark ocellated 

 dorsal spot. From the outer edge of the dark shade runs an undulat- 



