852 REVISION" OF AUSTRALIAN LEPIDOPTERA, 



numerous faint waved darker transverse lines ; margins of median 

 band indicated by series of minute white dots, anterior slightly- 

 curved, posterior from I of costa to f of inner margin, somewhat 

 sinuate above and below middle so as to form a slight median 

 projection ; a blackish median discal dot ; a faint waved subterminal 

 line indicated by whitish scales : cilia reddish-grey with two broad 

 dark grey lines, tips whitish barred with reddish-grey. Hind- 

 wings elongate, hindmargin waved, unevenly rounded ; light grey, 

 becoming purplish-tinged posteriorly, with faint traces of darker 

 lines ; cilia rosy-grey, basal half darker, tips partly whitish. 

 Georges Bay, Tasmania, in December ; two specimens. 



66. Hydr. decreta, Walk. 



(CidaHa decreta, "Walk. Suppl. 1692.) 



2. 20 mm. Head, palpi, thorax, and abdomen fuscous, mixed 

 with blackish and grey-whitish ; palpi 1-^. Antennae fuscous. 

 Forewings rather elongate-triangular, hindmargin slightly waved, 

 bowed, oblique ; fuscous, mixed with dark reddish-fuscous and 

 pale ochreous ; two nearly straight obscure pale brownish-ochreous 

 lines about ^, preceded by a black line ; median band finely 

 margined with black, preceded and followed by pairs of pale 

 brownish-ochreous lines, anterior from \ of costa to 5 of inner 

 margin, rather curved, posterior from f of costa to f of inner 

 margin, upper half forming an obtuse angle with lower in middle 

 and twice sinuate so as to project at 5 from costa ; an obscure 

 pale waved subterminal line ; an interrupted black hindmarginal 

 line : cilia pale brownish-ochreous, strongly barred with dark grey, 

 with a cloudy dark reddish-fuscous median line. Hindwings 

 with hindmargin waved, rounded ; pale grey, with a median 

 band of four darker grey lines, posterior obtusely angulated in 

 middle and partly blackish ; a fifth grey line beyond this ; a 

 rather dark reddish-fuscous hindmarginal band, including a very 

 obscure pale waved subterminal line ; an interrupted black hind- 

 marginal line : cilia whitish-ochreous, obscurely barred with grey, 

 with a dull reddish median line. 



Geraldton, West Australia, in November ; two specimens. 



