127 



9. Gen. Periopta, nov. (TreptoTrros, conspicuous). 



Antennae i\ to | ; filiform. Frons with truncate conical 

 prominence with raised rim at apex. Palpi moderate, ascend- 

 ing ; second joint with rather short, loosely appressed hairs; 

 terminal joint long, smooth. Abdomen smooth, with dorsal 

 crests more or less developed. Posterior tibiae with long hairs 

 on dorsum. Neu ration normal. 



ardescens, Butl. (Type). diver sa. Wlk. 



10. Gen. Hecatesia, Bdv. 



Antennae f ; very slightly dilated (thyrldion) or clubbed 

 (jent strata) before apex. Frons with short truncate conical 

 prominence, with raised rim at apex concealed by long hairs. 

 Palpi moderate or rather long, porrect or slightly ascending; 

 terminal joint long, smooth (thyrldion) or hairy (fenestrata). 

 Abdomen very stout, smooth, with small dorsal tufts of hair 

 on three basal segments, and with lateral tufts of hair on 

 apical segments. Posterior tibiae with long hairs on dorsum. 

 Forewings in female with 10 short-stalked or connate, 8, 9 

 from areole(i); in male with a large ribbed hyaline sub- 

 costal area curved round a strong chitinous costal projection, 

 and neuration much distorted. Hind wings normal. 



thyrldion, Feist. fenestrata, Bdv. f exidtans, Wlk. 



Tlie exact ajfinities of this curious genus are doubtful. 



11. G^n. Idalima, Turn. 



Antennae about I, rarely longer ( metasticta) or shorter 

 (tetrapleiira ) ; filiform. Frons with truncate conical promin- 

 ence with raised rim at apex. Palpi moderate or rather long, 

 ascending; second joint densely hairy beneath; terminal joint 

 moderate or long, smooth. Abdomen smooth, not crested. 

 Posterior tibiae smooth. Neuration normal. 



tetrayleura, Meyr. f hemiphraf/nia , Low. affinis, Bdv. 

 leonora, Dbld. metasticta, Hmps. aethrias, Turn. : Trans. 

 Roy. Soc. S. Austr., 1908, p. 55; of this cyanobasis, Hmps., 

 is a synonym. 



12. Gen. Radinocera, Hmps. 



Antennae slightly over h; filiform. Frons with a trun- 

 cate conical prominence with raised rim at apex. Palpi 

 ascending, in male moderate, in female rather long; second 

 joint with rather long dense loosely appressed hairs ; terminal 

 joint in male very short, in female long, smooth. Abdomen 

 smooth, with a fan-shaped crest of scales on first segment only. 

 Posterior tibiae smooth. Neuration normal. 



maculosa, Roths. f placodes, Low. f vac/ata, Wlk. 



(1)1 have only one female (fenestrata) for examination. 

 E 



