190 THE PROCEEDINGS OF THE LINNEAN SOCIETY 



hindmarginal line blackish, unspotted ; cilia shining grey, pale 

 towards tips, intersected by a rather broad white longitudinal 

 mark at median streak, another less broad below it, and two 

 others much narrower and more indistinct above it, with faint 

 traces of a parting-line. Hindwings fuscous-grey, paler in ? ; 

 cilia white, with a fuscous-grey parting-line near base. 



Var. a. Entirely suffused with greyish-ochreous, leaving no 

 trace of white colour either on head or forewings, or of the trans- 

 verse lines on forewings ; only markings the bluish-grey wedge- 

 shaped markings on hindmargin ; cilia of hindwings also suffused 

 with greyish-ochreous. 



Always distinguishable by the wedge-shaped hindmarginal 

 markings. The var. a is singular in appearance, and at first sight 

 appears distinct, but is probably only a dull-coloured spring 

 form ; two specimens (without the ordinary form) were taken by 

 Mr. G. H. Ray nor, near Parramatta, in August. The ordinary 

 form is the commonest of the genus in New South Wales, 

 occurring in great abundance everywhere from Sydney to the 

 Blue Mountains, at Newcastle, and probably generally ; also 

 near Melbourne, and in the E.ockharapton district, from November 

 to April. 



Gr. dimidiellus n. sp. 



5-2" — 8". Head ochreous-grey. Labial palpi more than twice 

 as long as head, dark fuscous sprinkled with grey, beneath white 

 at base ; maxillary palpi whitish above, dark fuscous beneath. 

 AntennsD ochreous-grey. Thorax brownish -grey. Abdomen 

 o-reyish-ochreous, anal-tuft paler. Legs greyish-white above, 

 fuscous beneath. Forewings elongate, not much dilated, hind- 

 margin rounded ; light ochreous, tinged with grey, the lower 

 half more or less slightly (especially posteriorly), the upper half 

 entirely suffused with ochreous-brown or dark-brown ; lower half 

 more or less partially sprinkled with dark fuscous scales ; a white 

 median streak from base to hindmargin, broadest at |, posteriorly 

 attenuated or partially obsolete, above generally margined with 

 blackish scales, especially posteriorly, where they are sometimes 

 very numerous, and form a cloudy blackish band along the streak; 

 •Generally there are faint indications of two transverse lines, which 



