644 DESCRIPTIONS OF AUSTRALIAN MICRO-LEPIDOPTERA, 



This genus is the type of a considerable group, characterised 

 usually by the presence of a well-marked thoracic crest, the origin 

 of veins 3 and 4 of hindwings from a point, and the approximation 

 of 5 to 4 at base. Sericoris, Tr., separated from Penthina by the 

 less well-marked crest, appears to me at present insufficiently 

 distinguished, but is not represented in Australia, the two species 

 described below belonging truly to Penthina. 



Larva sixteen-legged, feeding in rolled or spun-together leaves, 

 or in stems and seedheads. 



The genus is rather numerously represented in Europe and 

 North America ; of the two Australian species P. helicana may be 

 separated from P. doxasticana by the dark triangular costal spot. 



1. Penth. doxasticana, n. sp. 

 $ ? . 6"-7|". Head, palpi, antennae, and thorax light grey or 

 dark grey, crest of thorax sometimes black. Abdomen ochreous- 

 grey, edges of segments whitish. Legs whitish, anterior and 

 'middle tibiae and all tarsi banded with dark fuscous. Forewings 

 posteriorly dilated, costa slightly arched, apex nearly rectangular, 

 hindmargin slightly oblique ; light grey, irrorated with blackish 

 scales in rows, sometimes suffused with darker grey ; costa with 

 numerous short oblique blackish strigula), more or less suffused 

 with ferruginous ; central fascia generally obsolete or indicated 

 by two or three faintly darker spots, sometimes tolerably distinct 

 but ill-defined, narrow, dark grey, from middle of costa to inner 

 margin before anal angle, interrupted beneath costa ; four or fivo 

 alternate costal strigulse towards apex dilated into very small 

 subquadrate black spots : cilia ferruginous-grey with a sharply 

 defined black basal line on upper half of hindmargin, wholly 

 whitish on lower half, blackish beneath anal angle. Hindwings 

 fuscous-grey, paler at base, hindmarginal edge darker ; cilia 

 whitish or grey-whitish, with a dark grey line near base. 



Perhaps more allied to the European P. profundana, F. than to 

 any other species, but very distinct ; the white cilia on lower half 



