198 DESCRIPIIONS or AUSTEALTAN MTCEO-IEPIDOPTEEA, 



costa fuscous, witli white spots on costal streaks. Hind wings 

 grey, cilia whitish-ochreous-grey. 



Belongs to the group of G. thalassias, Meyr., but very distinct ; 

 easily recognised by the remarkable length and obliquity of the 

 first costal streak. 



Larva moderately attenuated from second segment throughout, 

 head much narrower than second segment, semi-oval ; pale 

 whitish-green ; head light brownish. Mines an irregular loose 

 flat discoloured blotch in leaves of PuUencea sp.--{?) {Leguminos(B), 

 under surface slightly contracted. Pupa in a firm cocoon outside 

 the mine. The food-plant is not common, and being unable to 

 find a specimen in blossom, I did not identify the species ; I 

 collected some number of the larvae near Sydney in July, but only 

 bred one imago, early in September. 



Grac. alysidota, Meyr. 

 Larva mines a flat irregular discoloured blotch beneath upper 

 surface of phyllodia of Acacia longifolia (^Leguminosm). Pupa 

 in an elongate flat white cocoon on surface of phyllodium between 

 contracted edges. I found one larva only of this species, which 

 I consequently could not describe, in July, and bred the imago 

 in September. 



Grac. didymella, Meyr. 



Larva moderately attenuated posteriorly, not flattened ; dull 

 greyish-yellowish, head suffused with blackisli. Mines a large 

 irregular elongate blotch in phyllodia of Acacia longifolia, 

 {Loguminosce) ; blotch bladderlike, both surfaces inflated, not 

 discoloured, walls thick, fleshy. Pupa in a flat white cocoon in 

 an angle of a bent phyllodium. The mine is readily distinguished 

 from that of G. alsidota on the same tree by the inflation and 

 thickness of the walls. I found the larva tolerably common near 

 Sydney in July, and bred eight specimens at the end of August 

 and beginning of September. The species does not vary, and is 



