672 DESCRIPTIONS OF AUSTRALIAN MICRO-LEPIDOPTERA, 



reaching half across wing ; a short oblique cloudy blackish-grey 

 streak from apes, anteriorly suffused and almost meeting the 

 oblique streak from inner margin ; cilia with basal half white 

 irregularly barred with blackish-grey, outer half light grey. 

 Hindwings light grey, thinly scaled towards base ; cilia grey- 

 whitish, with a suffused grey line near base. 



Very similar to H. thalassinana, but always larger and less 

 variable ; distinguished by the extreme obliqueness of the 

 markings, and the length of the blackish streak from inner 

 margin before middle, which extends along the disc uninter- 

 ruptedly to three-fourths from base. 



Very common amongst Leptospermum scrub from September to 

 February, and I have taken it in May ; it occurs round Sydney 

 and Wollongong, in New South Wales; at Melbourne and 

 Brisbane ; and at Brighton in Tasmania. 



3. Hoi. thalassinana, n. sp. 



cf ? • 4"-5£". Head and thorax whitish, thorax mixed with 

 grey on back. Palpi whitish, second joint with a blackish spot 

 in middle and a blackish band towards apex. Antennae grey. 

 Abdomen in male dark grey, with whitish anal tuft, in female 

 ochreous-grey. Legs white, anterior and middle tibiae and tarsi 

 with slender dark fuscous rings. Forewings narrow, costa hardly 

 arched, hindmargin oblique, hardly rounded ; dull white, with 

 fine very oblique grey strigulse, in male almost entirely suffused 

 with light grey; costa with several broader oblique blackish 

 strigulse ; a small oblique subquadrate dark fuscous-grey blotch 

 on inner margin near base, anteriorly suffused; a straight 

 oblique moderately broad dark fuscous-grey streak from inner 

 margin before middle, anteriorly suffused, posteriorly generally 

 sharply defined, reaching half across wing, truncate above, 

 sometimes obsolete towards inner margin ; generally two dark 

 fuscous-grey linear dots, longitudinally placed, beyond this above 

 middle, not connected ; a rather broad oblique triangular dark 



