OF NEW SOUTH WALES. 193 



grey towards base. Anterior legs fuscoas ; middle and posterior 

 legs pale ochreous. Forewings moderately broad, hindmargin 

 oblique, rounded, subconcave beneath apex ; ochreous ; a very 

 narrow silvery- white costal streak from base to beyond middle ; a 

 broader silvery-white subcostal streak from one-third to costa 

 immediately before apex, attenuated at extremities ; a strong 

 silvery-white central streak on sub median vein from base to 

 hindmargin, roughly margined with blackish scales on apical half 

 above and on basal half beneath; sending from its lower edge 

 four very slender silvery-whitish branches to hindmargin, the 

 lowest branch more or less blackish -margined, and the tolerably 

 broad ochreous interspaces sometimes mixed with blackish or 

 grey scales ; an elongate-triangular silvery -white subapical spot, 

 resting on hindmargin below apex and on posterior quarter or 

 median streak, partially or entirely cut longitudinally by two 

 blackish -ochreous lines ; below median streak a straight silvery- 

 white streak from near base to anal angle, and a silvery-white 

 streak from base to inner margin at one-third ; a fuscous line 

 along inner and hind margins, hindmarginal line marked with 

 seven or eight often obsolete blackish dots ; cilia white, becoming 

 metallic-grey at tips, and entirely about anal angle. Hindwings 

 pale greyish-fuscous, hindmarginal line dark fuscous ; cilia white. 



This and the two following species are very nearly allied, and 

 it is probable that several other closely related species remain to 

 be found. Opulentellus differs from both the others by the sub- 

 costal streak not reaching nearer to base than one-third, the dark 

 fuscous anterior legs, and general distinctness of marking. Taken 

 commonly at Parramatta in April ; -Z'eller's specimen was taken 

 in Tasmania. 



Or. invalidellus n. sp. 



11". Head pale ochreous, with a very slender whitish line 

 above each eye. Labial palpi more than twice as long as head, 

 acute, pale ochreous ; beneath whitish at base ; maxillary palpi 

 ochreous. Antennas ochreous-fuscous, in ^ deeply dentate. Tho- 

 rax ochreous. Abdomen whitish-ochreous, anal tuft whitish. 

 Anterior legs ochreous, middle and posterior legs whitish. Fore- 

 wings rather elongate, apex acute, hindmargin slightly sub-con- 



