1664 DESCRIPTIONS OF AUSTRALIAN MICRO-LEPIDOPTERA, 
irregular streak from third dot to anal angle ; a narrow hind- 
marginal fascia from apex to anal angle : cilia yellow, at anal 
angle light brownish-ferruginous. Hindwings elongate-ovate, 
3 and 4 from a point ; very pale grey, more or less suffused with 
pale whitish-ochreous ; cilia pale whitish-ochreous. 
Fernshaw and Warragul, Victoria; in December, three speci- 
mens. A variable species, but even the least-marked forms seem 
separable from 0. malacella by the dark hindmarginal streak ; the 
strongly-marked form is conspicuously distinct. 
722. (374a.) Ocyst. dystechna, n.sp. 
(^ 5 . 13-14 mm. Head, palpi, and thoiax fuscous, sprinkled 
with ochreous- whitish, terminal joint of palpi Antenme 
fuscous, ciliations 2|. Abdomen ochreous-grey- whitish. Legs 
dark fuscous, apex of joints and posterior pair ochreous- whitish. 
Forewings elongate, rather narrow, costa moderately arched, apex 
acute, hindmargin extremely obliquely rounded ; pale fuscous 
irrorated with darker ; a dark fuscous dot in disc at % a second 
lieneath it on fold, and a third in disc at | : cilia whitish-fuscous, 
towards base sprinkled with darker fuscous. Hindwings broad- 
lanceolate, 3 and 4 from a point ; whitish-grey ; cilia ochreous- 
grey-whitish. 
Sydney and Blackheath (3500 feet), New South Wales ; from 
June to August, and on the mountains in November, six speci- 
mens. 
723. (379a.) Ocyst. episcota, n.sp. 
13-15 mm. Head and palpi in ^ grey, in 9 white, terminal 
joint almost 1. Antennee dark grey, ciliations 5. Thorax dark 
brownish-grey, in ^ whitish towards middle anteriorly. Abdomen 
fuscous. Legs rather dark fuscous, posterior pale ochreous-yel- 
lowish. Forewings elongate, rather narrow, costa gently arched, 
apex acutely produced, hindmargin extremely oblique, continous 
with inner margin ; dark brown ; markings ill-defined, in ^ light 
grey, in 5 white ; a blotch covering basal fourth ; a i-ather narrow 
fascia from beyond middle of costa to beyond middle of inner 
