1210 REVISION OF AUSTRALIAN LEPIDOPTEKA, 



margined with blackish, narrowed towards inner margin, anterior 

 edge sinuate, posterior dentate. Hind wings and sometimes also 

 forewings beneath with a well-defined moderately broad median 

 fascia formed by dark reddish-fuscous irroration, attenuated or 

 becoming obsolete towards inner margin, posterior edge dentate, 

 curved. 



Sydney, New South Wales, in March ; three specimens. 



16. Hypographa, Gn. 



Face with a broad rounded horny projection, more or less 

 concealed in dense projecting scales. Tongue developed. Eyes 

 fringed with long cilia above and beneath. Antennee in ^ 

 unipectinated, apex simple. Palpi moderate, subascending, 

 second joint with long projecting hairs beneath, terminal joint- 

 moderate, somewhat swollen towards apex. Thorax stout, long- 

 haired, beneath densely hairy. Tarsi spinulose. Forewings with 

 vein 6 from point with or out of 9, 10 touching 9 at a point, 11 

 anastomosing with 12. Hindwings with veins 6 and 7 stalked or 

 separate, 8 anastomosing with cell from near base to beyond 

 middle. 



This is a very singular genus. In the structure of vein 8 of the 

 hindwings it departs from the family type, and assumes a 

 character otherwise possessed only by the Larentiadob ; but it is 

 absolutely certain from a consideration of the whole of the struc- 

 tural characters that its place is here, and that it is in fact nearly 

 allied to Monoctenia. The unipectinated antennae, very stout 

 thorax, spinulose tarsi, and different neiiration of forewings are 

 conclusive against its reference to the Larentiadce. The ciliated 

 eyes and horny frontal projection are curious exceptional char- 

 acters, probably indicating some ancestral reversion. In superficial 

 appeaiance the species approach the Notodontidce. I have no 

 doubt that the genus may be regarded as developed collaterally 

 with Monoctenia from a common ancestor, which was the direct 

 progenitor of the whole of the thick-bodied group of this family. 

 The anastomosis of vein 8 in the hindwings has arisen quite 



