147 



roughened anteriorly; terminal joint rather short. Thorax 

 with a small posterior crest. Abdomen with a dorsal crest 

 on basal segment. Posterior tibiae hairy on dorsum. Fore- 

 wings normal. Hindwings with cell ^ ; discocellulars angled, 

 5 from below angle. 



La/phygma is not tenable as a distinct genus; in exigua 

 3 and 4 of hindwings are usually stalked, but this is incon- 

 stant. No reliance can be placed on the less broadly hairy 

 anterior tibiae, for there are intermediates in other species; 

 still less in the slightly narrower forewings. 



umhraculata, Wlk. mauritia, Bdv. leucophlebia, 

 Hmps. The distribution of this species is curious, but it is 

 certainly endemic in Australia. I have three examples, one 

 from Melville Island, Northern Territory, and two from 

 Brisbane, exempta, Wlk. exigua, Hb. 



15. Gen. Thegalea, nov. (^T/yaAco?, sharp). 



Frons prominent, conical, with a large circular apical 

 depression with raised edges, in its centre an acute corneous 

 process. • Palpi rather long, slender, porrect; second joint 

 shortly rough-scaled; terminal joint rather long. Thorax 

 with a small posterior crest. Abdomen with a small dorsal 

 crest on basal segment. Posterior tibiae smooth. Forewings 

 normal. Hindwings with 5 from shortly above lower angle of 

 cell (1). 



haemjnarhanta, Turn. 



16. Gren. Hypoperigea, Hmps. 



Frons with rounded prominence. Palpi moderate, 

 ascending; second joint rough-haired; terminal joint moder- 

 ately short. Thorax with a small posterior crest. Abdomen 

 with a dorsal crest on basal segment, and sometimes a small 

 crest on second segment. Posterior tibiae hairy on dorsum. 

 Forewings normal. Hindwings with cell ^; 5 from well below 

 middle (J). 



tonsa, Gn. This species varies in the development of 

 reddish scales on forewings; they may be absent. 



17. Gen. Namangana, Stgr. 



Frons not projecting. Palpi moderate or rather long, 

 ascending; second joint rough-haired; terminal joint short 

 or rather long, porrect. Thorax with rounded anterior and 

 small posterior crests. Abdomen with dorsal crest on basal 

 segment. Posterior tibiae hairy. Neuration normal. 



t minor, Butl. f albirena, Hmps. 



