152 CATALOGUE OF 



Genus THEBSANA. 



Mas, Corpus sat gracile. Proboscis brevis- Palpi porrecti, 

 hirsuti, obtusi, caput perpaullo superantes, articulo 3o brevissimo. 

 Antennas lale pectinatae, Abdomen alas posticas longe superans, 

 fasciculo apicali elongato, sexuaiibus bene determinatis. Pedes 

 lasves, graciles; tibiae posticas subincrassata?, calcaribus quatuor 

 minimis. Alas anticas elongate, latiusculae, basi tumidae, apice 

 rotundatae, margine exteriore subrecto perobliquo. 



Male. Body rather slender. Proboscis short. Palpi porrect, 

 obtuse, hirsute, extending very little beyond the head; third joint 

 extremely short. Antennae broadly pectinated. Abdomen long, 

 extending much beyond the hind wings ; apical tuft long; sexual 

 appendages much developed. Legs smooth, slender; hind tibiae 

 slightly incrassated, with four rudimentary spurs. Wings rather 

 broad. Fore wings elongate, rounded at the tips, somewhat tumid 

 near the base ; exterior border almost straight, very oblique. 



ThERSANA ACUTA. 



Mas. Nigra ; caput antice album ; thorax antice ochraceus ; ab- 

 domen nigro-cinereum, subtus albidum, fasciculo apicali 

 nigra subtus luteo ; pedes subtus albidi : ala vitreae, nigro late 

 marginatce, venis nigro diffuse marginatis, 



Male, Black. Head white in front. Proboscis tawny. Thorax 

 ochraceous in front. Abdomen blackish cinereous, whitish beneath ; 

 apical tuft black, luteous beneath. Legs whitish beneath. Wings 

 vitreous, broadly bordered ; veins diftusedly bordered with black, 

 especially those of the fore wings. Length of the body 8 lines ; of 

 the wings 17 lines. 



a. Nanta, Amazon Region. From Mr. Bates' collection. 



Genus ZIGIRA. 



Fcem. Corpus gracile. Proboscis brevis. Palpi pubescentes, 

 vix ascendentes, caput non superantes, articulo 3o minimo. Abdo- 

 men alas posticas non superans. Pedes graciles, setulosi ; tibiae 

 posticae sat robustae, calcaribus nullis. Alae anticae longae, latae, 

 apice rotundatae, margine exteriore subconvexo subobliquo ; posticae 

 margine exteriore angulato antice subtruncato. 



