LEPIDOPTERA HETEROCERA. 391 



and along part of the hind border of the hind wings. Fore wings 

 with an elliptical oblique spot in the disk. Hind wings with a 

 clavate longitudinal spot in the disk ; on the under side this spot is 

 more lengthened, and there are two white stripes towards the inner 

 border. Length of the body 5^ lines ; of the wings 16 lines. 



a. South America. From M. Becker's collection. 



b. Rio Janeiro. From Mr. Johnson's collection. 



1*2. MELANCHEOIA AERUGINOSA. 



Nigro-viridis, subtus albida ; abdomen apice luteum ; alee quatuor 

 fusco-cuprece albo unimaculatce ; posticce albo bistrigatce. 



Greenish-black, whitish beneath. Proboscis testaceous. Ab- 

 domen luteous at the tip. Wings brownish cupreous, disk of each 

 with an oblong oblique white spot which is largest and attenuated 

 towards the base in the hind pair, and the latter have two white 

 streaks between the spot and the inner border. Length of the body 

 5 \ lines ; of the wings 17 lines. 



a. Brazil. From Mr. Stevens' collection. 



Genus 38. NYCTEMERA. 



Corpus sublineare, fere cylindricum, gracile ant sat validum, 

 longitudine mediocri. Palpi porrecti, capite vix breviores; articulus 

 3us acuminatus, 2i dimidio aequalis. Antennae maris pectinatae, 

 fcemincB subpectinataa aut serratae. Abdomen alas posticas non 

 superans. Pedes graciles ; tibiae posticas calcaribus quatuor. Alae 

 lata albae, nigro fuscoque varia?. 



Nyctemera p., et Deilemera, Hubn. Verz. Schmett. 178. 

 Leptosoma, Boisd. 



Body nearly linear and cylindrical, of moderate length, slender 

 or rather stout. Palpi porrect, almost as long as the head ; third 

 joint acuminated, full half the length of the second. Antennas of 

 the male deeply pectinated, of the female slightly pectinated or 

 serrated. Abdomen not extending beyond the abdomen. Legs 

 slender; hind tibiae with four spurs of moderate length. Wings 

 broad, not long, black and white ; four superior veins. 



1. Nyctemera annul ata. 



Abdomen nigrum, annulis aurantiacis ; alee concolores nigree ; 

 antic ce fascia maculari alba; posticce puncto majori albo. 



2 M 3 



