NO. 2043. NEW MICROLEPIDOPTERA FROM PANAMA— BU8CK. 23 



into Yein 1 1 at its basal third, with the membrane above it thickened ; 



1 h furcate at base. Hindwings as broad as the forewings; costa 

 straight; apex bluntly pointed; termen and dorsum evenly rounded; 

 8 veins: 3 and 4 stalked; 5 parallel with 4; 6 and 7 parallel; 8 free. 

 Posterior tibiae nearly smooth. 



Agreeing with Fabiola Busck and Himotica Meyrick in having 

 veins 7 and 8 in the forewings coincident; differs from both in the 

 long antennse and the very long terminal joint of the palpi; Fabiola 

 has 2 and 3 in the forewings widely sej^arate; Himotica has these 

 veins stalked and the present genus has 2 and 3 connate. 



HAMADERA AUREA, new species. 



Labial palpi blackish with basal half of second joint golden yellow. 

 Face, head, and thorax metallic blue, strongly iridescent. Antennae 

 deep black with a broad, white annulation just before the tip. Basal 

 half of the forewings deep black, with a broad, semicircular, metallic 

 blue band from near the base to just before the middle of the costa; 

 the ends of this band on the very edge white; a large, contiguous, 

 metallic blue spot on the fold near base and another similar one on 

 the middle of the fold, neither reaching the dorsal edge; apical half 

 of the wing deep golden yellow, which color sends a broad projection 

 into the dark basal part on the middle of the cell; extreme tip of the 

 wing and a slender projection therefrom into the yellow part dark 

 violaceous, strongly metallic and iridescent; apical cilia purplish 

 black; termmal cilia dusky golden. Hindwmgs blackish brown 

 with the costal edge above vein 8 silvery white; cilia dark bronze. 

 Abdomen blackish fuscous above; underside silvery white. Legs 

 blackish with broad light yellow bands and narrow yellow annulations 

 on the tarsal joints 



Alar expanse. — 11-12 mm. 



Halitat. — Trinidad River, Panama, March. 



Type-specimen.— Csit. No. 16682, U.S.N.M. 



A brilliantly colored species, which reminds in a noteworthy degree 

 of the similarly sized Dichomeris exteriorella Walker and D. luminella 

 Busck; like these species, it is a day -flying, sun-loving insect. 



COSTOMA, new genus. 



Type. — Costoma hasirosella, new species. 



Labial palpi long, recurved, smooth; second joint somewhat 

 thickened with scales; terminal joint shorter than second, stout, 

 acute. Antennae simple, without pecten on basal joint. Head and 

 thorax smooth. Forewings elongate ovate; costa and dorsum 

 slightly and evenly curved; apex and termen rounded; 12 veins: 



2 and 3 stalked; 7 and 8 stalked; 9 out of the stalk; 7 to apex; 11 

 from before middle of cell; 1 6 furcate at base. Hindwings as broad 



