842 REVISION OP AUSTRALIAN LEPIDOPTERA, 



bright orange ; base suffused with dark fuscous, produced along 

 inner margin to middle; two or three irregular sometimes 

 interrupted dark fuscous lines before middle ; a broad blackish- 

 fuscous hindmarginal band, containing an irregular broad some- 

 times interrupted orange subterminal line ; cilia whitish-yellowish, 

 barred with blackish-grey. 



Mount Kosciusko (5000-6000 feet). New South Wales; in 

 January, common. This and the three following species, which 

 are related together but very distinct, are very handsome ; all 

 were plentiful on the mountain, and probably the Gippsland 

 ranges will furnish other allied species of the group. 



53. Hydr. oxygona, n.sp. 



(J$. 26-28 mm. Head and palpi light ochreous-yellowish, 

 irrorated with blackish ; palpi If. Antennae dark fuscous, in ^ 

 filiform, ciliations f. Thorax dark fuscous. Abdomen rather 

 dark grey, sprinkled with pale yellowish towards sides. Legs 

 dark grey, sprinkled with pale yellowish. Forewings triangular, 

 hindmargin slightly waved, somewhat bowed, rather oblique ; 

 uniform dark fuscous ; sometimes a pale yellowish dot on costa 

 at \ ; two rather narrow smooth-edged light ochreous-yellow fascise, 

 first from ^ of costa to middle of inner margin, almost straight, 

 posterior edge white, second from f of costa to | of inner margin, 

 acutely angulated in middle, both halves slightly sinuate inwards, 

 anterior edge white ; a short whitish-yellowish mark from costa 

 near apex : cilia dark fuscous. Hind wings with hindmargin 

 slightly waved, rounded ; orange ; basal fourth fuscous ; two 

 cloudy dark fuscous lines before middle, more or less obsolete on 

 costal half ; a dark fuscous fascia at I, interrupted in middle, 

 separated by a cloudy line of ground-colour from a narrow dark 

 fuscous hindmarginal fascia ; cilia dark grey, round apex pale 

 yellowish, sometimes with a whitish-yellowish spot in middle of 

 hindmargin. 



Mount Kosciusko (4000-6500 feet). New South Wales; in 

 January, common. 



