170 DESCRIPTIONS or ArSTEALIAN MICRO-LEPIDOPTEEA, 



anterior pair suffused with dark fuscous above. Breast beneath 

 on each side with a broad expansible pearly prismatic plate, 

 composed of about a dozen oblong overlapping plates, behind 

 which is an expansible tuft of thick ochreous-white hair-scales, 

 resting on a circular patch of overlapping deep black plate-like 

 scales ; a short linear patch of black scales also extends along 

 base of submedian fold on under-side of forewings. Forewings 

 very narrow at base, gradually dilated posteriorly, costa at first 

 straight, towards apex moderately arched, apex obtusely rounded, 

 hindmargin rather strongly rounded, not oblique ; light grey, 

 slightly brownish-tinged, with irregularly scattered dark fuscous 

 scales ; a cloudy dark fuscous transverse mark at one-fourth, 

 not reaching costa or inner margin ; a very faint slender 

 irregular dark fuscous transverse line somewhat before middle, 

 slightly curved outwards ; a very ill-defined small dark fuscous 

 spot in disc at two-thirds, and another near inner margin 

 a little beyond middle ; a slender cloudy dark fuscous 

 outwardly-curved transverse line from a little before apex 

 to a little before anal angle, bent inwards beneath costa, 

 closely followed by another much fainter similar line ; a blackish 

 hindmarginal line : cilia light grey, with rows of blackish points. 

 Hindwings whitish-grey, transparent, hindmarginal edge suf- 

 fusedly darker ; a short linear streak of thick black scales at base 

 below middle; cilia grey-vvhitish, with a well defined dark grey 

 line near base. 



The ornamental neck-frill of this species is very extraordinary, 

 and reminds one somewhat of similar appendages in some hum- 

 ming-birds ; it is probably less developed in the female. 



One specimen taken at Sydney in October, amongst dry bush. 



Syp. melanostyla, Meyr. 



This species differs from the other three of the genus in 

 having vein 3 of the hindwings rising out of the stalk of 4 and 5 . 

 It is however closely allied to the others ; the female, which is 



