remarkable ' new genera of Microlepidoptera. 247 



in layers and rather resembling a mussel-shell, probably attached 

 to bark or between leaves. 



Hab. Amazons, Pava (Goeldi), 1 £ , 2 ?, larva, pupa and 

 cocoons. Exp. $ 38, $ 50 mm. Type in B. M. 



ORNEODID.E. 



Genus Triscledecia, nov. 



Proboscis fully developed ; palpi with the 2nd joint porrect about 

 twice the length of head and broadly fringed with hair below, the 

 3rd oblique, moderate ; antenna: of male ciliated ; tibia? with pro- 

 jecting tufts of hair at the spurs. Fore-wing divided into six plumes 

 to rather more than one-third length : the costa with six tufts of 

 scales ; the scaling rough ; vein 3 from well before angle of cell ; 



Triscsedecia dactyloptera, 6 ?. 



4-5 from angle ; 6 from below upper angle ; 7-8 stalked ; 9, 10, 1 1 

 from cell. Hind-wing divided into seven plumes to half length ; 

 veins 3-4 from angle of cell ; 5 absent ; 6-7 from upper angle ; 

 8 free, from base. 



This is the third known genus of the family, the others 

 being Omeodes, Latr., and Pzelia, Wlk. 



Triscsedecia dactyloptera, n. sp. 



$ . Head, thorax and abdomen clothed with whitish, pale brown 

 and black scales; antenna? and legs mixed with whitish; abdomen 

 with diffused blackish bands. Fore-wing clothed with greyish, pale 

 brown and black scales ; the costa with whitish spots between 

 the black tufts of scales ; the cell with small black lunules followed 

 by whitish spots at middle and extremity ; traces of a diffused 

 oblique whitish band from lower angle of cell to inner margin ; an 

 indistinct slightly waved whitish postmedial line ; the plumes with 



