634 CATALOGUE OF 



half the length of the body. Abdomen extending for half its length 

 beyond the hind wings. Legs stout ; hind tibiae with four long 

 spurs. Fore wings long and narrow, hardly convex in front, angu- 

 lar at the tips, slightly convex and very oblique along the exterior 

 border. Male, — Antennae minutely serrated. 



Nystalea, like several other exotic genera of the first group, 

 partly assumes the characters of the second group, and the peculiar 

 structure of the latter is but slightly developed in its European 

 species. 



1. Nystalea conchyfera. 



Ligno-fusca ; abdomen cinerascens ; alee anticce costa margineque 

 exteriore ex parte lineisque lanceolatis obscure fuscis, costa 

 basali subferruginea, plagis duabus (una costali altera apicali) 

 testaceis, macula discali postica lineaque submarginali guttu- 

 lari nigris ; posticus albidce, iridescentes, semihyalina?, margine 

 latofusco, ciliis sordide albidis. 



Nystalea conchyfera, Guen. Noct. ii. 122, 845. 



Isle St. Thomas. 



This is probably a variety of N. Ebalea. 



a — c. St. Domingo. From Mr. Tweedie's collection. 



d. ? Presented by E. Doubleday, Esq. 



e. Jamaica. 

 /. Spirito Sancto, Brazil. From Mr. Stevens' collection. 



2. Nystalea Ebalea. 





Roseo-ferruginea ; alee anticce nigro-fusca?, striga basali plagaque 

 apud unguium interiorem roseis, hue nigro punctata, ocellis 

 duobus costalibus nigris roseo luteoque marginatis, ocello dis- 

 cali postico nigro luteoque ; posticce rosea:, margine nigricante, 

 ciliis luteie. 



FlialaDna-Noctua Ebalea, Cram. Pap. Exot. iv. 41, pi. 310, f. C. 

 Nystalea Ebalea, Guen. Noct. ii. 123, 847. 



Surinam. 



Group 2. 



Corpus sat robustum. Caput fasciculo postice inclinato. Pro- 

 boscis mediocriter longa. Palpi subrecti ; articulus 3us cylindricus, 



