LEPIDOPTERA HETEROCERA. 
945 
Page 398. 
For “ Leucothoalis, Guen” and <c obliteralis, Guen .,” read 
“ Leucothoalis, Walk.” and “ obliteralis, Walk. 1 ' 
Page 401. 
ISOPTERYX? HERMEASALIS. 
Fuscescente-cinerea , gracilis ; palpi breves , graciles , ascendentes ; 
antennae glabrae , validce ; abdomen alas posticas superans ; 
pedes vix robusti , calcaribus longissimis ; aloe angustce , cer- 
vince,fusco conspersce , /mm interiore etexteriore albidis fusco 
marginatis , ?7/a m/7e flexa , squamis intermediis nigris , /mea 
marginali alba tenui nigro marginata ; anticce acutce , 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 while, slender, black-bordered. Fore wings acute, with 
two black points near the tip of the costa. Length of the body 2| 
lines ; of the wings 5 lines. 
This and the two following species do not quite agree with 
Isopteryx in structure, but can hardly be constituted as new genera. 
a. Venezuela. From Mr. Dyson’s collection. 
Isopteryx? Staiusalis. 
Foem. Lutea , gracilis , nigro conspersa ; palpi porrecti , brevissimi , 
articulo 2 o lato obtuso , 3 o conico minimo ; palpi maxillares 
distincti ; abdomen alas posticas superans ; alee sat angustce , 
rufo nigroque conspersce , lineis interiore et exteriore undulatis 
nigris rufo variis apud costam dilatatis , fascia submarginali 
nigra subundulata s trigas nigras includente , fimbria nigri- 
cante-albido notata ; anticce acutce , orbiculari et reniformi 
obsoletis. 
Female . Luteous, slender, speckled with black. Palpi por- 
rect, very short; second joint very broad and obtuse ; third conical, 
4 N 2 
