LEPIDOPTERA HETEROCERA. 945 



Page 398. 



For " Leucothoalis, Guen." and " obliteralis, Guen." read 

 11 Leucothoalis, Walk." and " obliteralis, Walk? 



Page 401. 



ISOPTERYX? HERMEASALIS. 



Fuscescente-cinerea, gracilis; palpi breves, graciles, ascendentes ; 

 antenna glabra, valida ; abdomen alas posticas superans ; 

 pedes vix robusti, calcaribus longissimis ; ala angusta, cer- 

 vina, fusco conspersa, lineis interiore et exteriore albidis fusco 

 marginatis, ilia valde flexa, squamis intermediis nigris, linea 

 marginali alba tenui nigro marginata ; antica acuta, punctis 

 duobus costalibus subapicalibus nigris. 



Brownish cinereous, slender, white beneath. Palpi short, 

 slender, obliquely ascending. Antennae smooth, stout. Abdomen 

 extending beyond the hind wings. Legs smooth, hardly stout ; 

 spurs very long. Wings narrow, fawn-colour, minutely brown- 

 speckled ; interior and exterior lines whitish, slight, brown-bordered, 

 the latter much bent ; space between them with black scales ; mar- 

 ginal line white, slender, black-bordered. Fore wings acute, with 

 two black points near the tip of the costa. Length of the body 2 J- 

 lines ; of the wings 5 lines. 



This and the two following species do not quite agree with 

 Isoptevyx in structure, but can hardly be constituted as new genera. 



a. Venezuela. From Mr. Dyson's collection. 



ISOPTE RYX ? STAIUSALIS. 



Fcem. Lutea, gracilis, nigro conspersa ; palpi porrecti, brevissimi, 

 articulo 2o lato obtuso, So conico minimo ; palpi maxillares 

 distincti ; abdomen alas posticas superans ; alee sat angusta, 

 rufo nigroque conspersa, lineis interiore et exteriore undulatis 

 nigris rufo variis apud costam dilatatis, fascia submarginali 

 nigra subundulata striaas nigras includente, fimbria nigri- 

 ' cante-albido notata ; antica acuta, orbiculari et reniformi 

 obsoletis. 



Female. Luteous, slender, speckled with black. Palpi por- 

 rect, very short ; second joint very broad and obtuse ; third conical, 



4n 2 



