840 REVISION OP AUSTRALIAN LEPIDOPTERA, 



3. DiTHALAMA, n. g. 



Face smooth. Palpi short, porrected or ascending, with ap- 

 pressed scales, somewhat rough beneath, terminal joint short. 

 Antennae in ^ dentate, ciliated with fascicles (1^). Thorax 

 smooth beneath. Abdomen in ^ with pencil of long hairs from 

 base beneath. Posterior tibiae in ^ flattened, distorted, without 

 spurs, in ^ all .spurs present; posterior tarsi in ^ much aborted. 

 Foi-e wings with veins 3 and 4 separate, 6 remote, 10 anastomosing 

 with 9 above 7, 11 anastomosing with 10 before 9. Hind wings 

 with veins 3 and 4 separate, 6 and 7 stalked. 



4. Dith. cosmosjnla, n. sp. 



(J$. 23-24 mm. Head rather dark fuscous, collar and lower 

 margin of face whitisli. Palpi fuscous, beneath whitish. Antennae^ 

 whitish or grey. Thorax whitish, with an obscure brownish- 

 ochreous bar behind middle. Abdomen grey mixed with ferrug- 

 inous, segmental margins white. Legs whitish, anterior pair 

 infuscated. Forewings with costa posteriorly moderately arched, 

 hindmargin bowed, oblique ; very pale greyish-ochreous ; basal 

 area suflFused with pale reddish-ochreous except towards costa ; 

 lines slender, ferruginous mixed with black ; first from beneath 

 costa at 5 to 5 of inner margin, curved outwards above middle, 

 sinuate inwards below middle ; a transverse linear fuscous discal 

 spot, followed by a sufi'used white patch ; second line from beneath 

 costa at 5 to f of inner margin, rather irregularly dentate, pre- 

 ceded by a whitish suffusion towards costa and inner margin ; an 

 irregular dentate-edged narrow fascia-like ferruginous blotch, 

 more or less mixed with black, close beyond second line, extend- 

 ing from rather near costa to below middle, margined by whitish 

 lines which are confluent beneath and continued to inner margin ; 

 an interrupted blackish hindmarginal line : cilia very pale greyish- 

 ochreous. Hind wings with hindmargin rounded ; ground colour, 

 discal spot, posterior markings, and cilia as in forewings, but 



