178 THE PKOCEEDINGS OF THE LTNNEAN SOCIETY 



Chil. parramattellus n. sp. 



g 9" 14". Head white. Palpi whitish-ochreous, mixed with 

 greyish-fuscous. Antennae ochreous- whitish. Thorax ochreous- 

 whitish, sometimes thinly sprinkled with fuscous. Abdomen 

 white, sometimes tinged with ochreous-grey, anal tuft pale 

 ochreous-grey. Legs whitish, posterior tarsi sometimes with 

 dark grey rings. Fore wings moderately broad, costa nearly 

 straight, apex tolerably acute, hind margin nearly straight, 

 slightly oblique ; whibish-ochreous, more or less densely irrorated 

 with fuscous-grey in variable intensity ; extreme costal edge 

 whitish, only distinct in dark specimens ; a dark fuscous discal 

 dot slightly beyond middle of wing, very much nearer to costa 

 than to inner margin ; sometimes on the whitish costal margin 

 are indications of the commencement of transverse lines at one- 

 third and two-thirds, but they are imperceptible on the disc ; cilia 

 whitish-ochreous to ochreous-grey. Hinfl wings white, with a 

 dark grey marginal line, sometimes suffused with greyish pos- 

 teriorly ; cilia whitish-grey, white at base. 



? 10"- 12". Head whitish. Palpi whitish-ochreous, mixed 

 with greyish and dark fuscous scales. Antennae whitish. Thorax 

 whitish-ochreous, sometimes ochreous-brown on sides. Abdomen 

 white, sometimes partially tinged with ochreous ; ovipositor 

 short, triangular. Anterior legs whitish ; middle and posterior 

 legs pale greyish-ochreous. Fore wings much narrower than in <$ , 

 apex more sharply acute, hind margin straighter and more 

 oblique ; whitish-ochreous, the veins neatly outlined on each side 

 with darker-ochreous ; a small black discal dot beyond middle of 

 wing, nearer to costa than to inner margin ; a hind-rnarginal row 

 of clear black dots ; cilia whitish, with two grey parting-lines. 

 Hind wings clear white ; cilia white. 



Apparently allied to the South American species 0. neuricellus 

 Z. and obliteratellus Z. 



Common at Parramatta along the river in February and March, 

 especially at light. 



