386 REVISION OF AUSTRALIAN LEPIDOPTERA, vi., 



Gen. 74. Thalainodes. 



Thalainodes, Low., Tr. R.S.S.A., 1902, p.231. 



Frons with a broad, flattened, corneous process. Tongue well- 

 developed. Palpi moderate, porrect, second joint shortly rough- 

 haired beneath; terminal joint short, obtuse. Antenna? of g 

 shortly bipectinated to apex. Thorax and abdomen not crested; 

 thorax hairy beneath. Femora glabrous. Posterior tibia? in £ 

 slightly dilated. Forewings in g without fovea; 10 out of 9, 11 

 anastomosing with 12. Hindwings with cell rather long (•§■), 

 otherwise normal. 



Allied to Thalaina, differing in the frontal process and the 

 pectinated antenna? of £. 



Type, T. tetraclada Low. 



This genus appears to be confined to the dry country of the 

 interior. I have not seen either tetraclada Low., or paronycha 

 Low., but both are so clearly closely allied to the new species 

 nessostoma that I have no hesitation in including them. 



1. Forewings silvery- white, with oehreous or fuscous lines 2. 



Foi'ewings grey, without markings ... allochroa. 



2. Forewings with a median bifurcating line 3. 



Forewings without a median bifurcating line tetraclada. 



3. Forewings with bifurcating line arising from base of costa... nessostoma. 

 Forewings with bifurcating line arising from costa at J paronycha. 



229. IThalainodes tetraclada. 



Amelora tetraclada, Low., Proc. Linn. Soc. N. S. Wales, 1900, 

 p. 406. 



N.S.W.: Broken Hill. 



230. IThalainodes paronycha. 



Amelora paronycha, Low., Proc. Linn. Soc. N. S. Wales, 1900, 

 p.407. 



N.S.W.: Broken Hill. 



231. Thalainodes nessostoma, n.sp. 



I'yaaoo-TOfxos, duck-billed. 



^. 42 mm. Head orange-ochreous; face with a long, plate 



like, corneous process, bent downwards at the edges and rounded 



at the end, of the shape of the upper half of a duck's bill. Palpi 



white. Antenna? grey-whitish. Thorax orange-ochreous; lateral 



