22 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.47. 



Correlated with Menesfra Clemens, from which it differs by having 

 3 and 4 in the hindwings stalked, not coincident. 



PROMENESTA LITHOCHROMA, new species. 



. Labial palpi light ochreous; second joint shaded with fuscous ex- 

 teriorly. Face light strawcolored, nearly white, hidescent. Head 

 light strawcolored. Antennas light ochreous. Thorax light saffron 

 yellow. Forewings light saffron without any markings; edges and 

 apical part slightly darker. Hindwlng light yellow. Abdomen light 

 ochreous with whitish iridescent underside. Legs light strawcolored; 

 tarsi dusky. 



Alar expanse. — 12-13 mm. 



Habitat. — Alhajuela, Trinidad River, and Porto Bello, Panama, 

 March. 



Type-specimen.— Csit. No. 16680, U.S.N.M. 



PROMENESTA MARGINELLA, new species. 



Labial palpi white; second joint with base blackish brown and 

 with a brown bar exteriorly; terminal joint with base and an annu- 

 lation just before the tip blackish brown. Face pure white, irides- 

 cent. Head dark greenish fuscous. Antennse dark fuscous with 

 white bases. Thorax dark olive brown. Forewings dark olive brown 

 with costal, apical, and terminal edges narrowly bright saffron yellow; 

 just before the termmal edge is a marginal series of black dots; 

 cilia yellow. Hindwings dark fuscous. Abdomen dark fuscous 

 above with silvery white underside. Legs strawcolored with dusky 

 tarsi. 



Alar expanse. — 10 mm. 



Habitat. — ^Trinidad River, Panama, March. 



Type-specimen.— Cd,t. No. 16681, U.S.N.M. 



Looks like a dimunitive Stenoma marginata, Busck. (See p. 49.) 



Family CECOPHORID.^. 



HAMADERA, new genus. 



Type. — Hamadera aurea, new species. 



Labial palpi long, thin, sickle formed; second joint but slightly 

 thickened with smoothly appressed scales; terminal joint much 

 longer than second, slender, acute. Antennse somewhat longer than 

 forewings, simple, without pecten on basal joint. Head and thorax 

 smooth. Forewings with costal and dorsal edges nearly straight and 

 parallel but both slightly concave at the end of the cell; apex and 

 termen evenly rounded; 11 veins: 7 and 8 coincident; 2 and 3 connate 

 from the corner of the cell; 4 from the end of the cell; 5 distant ; 6 to 

 apex; 9 and 10 from near the end of the cell; 11 from before middle; 

 12 in the female normal, in the male cui-ved downward and running 



