36 
Psyche 
[March 
consideration. As now known, it consists of three Australian 
genera: Ithone (New South Wales) with one species; Het- 
erithone (eastern Australia) with three species; and Var- 
nia (central and Western Australia) with a single species . 2 
Ithone is the only one of these that has been collected in 
large numbers, the others being known by very few individ- 
uals. Specimens of all of these genera are contained in the 
Museum of Comparative Zoology, and have been studied for 
the present paper. Since no detailed drawings have been 
published showing the arrangement of the terminal ab- 
Text-fig. 1. Ithone fusca Newman. Fore and hind wings of male 
specimen in M. C. Z. (Woy Woy, N. S. W., Nov. 4, 1918, R. J. T.) . Rs, 
radial sector; MA. anterior media; MP, posterior media; b, basal piece 
of MA between MP and Rs. 
dominal sclerites in the Ithonidae, I include here a series 
of such drawings of Ithone fusca, and, to facilitate compar- 
ison with Oliarces, a drawing of the wings of the same 
species. 
2 The monotypic genus Rapisma, from the Malay Peninsula, has been 
doubtfully referred to the Ithonidae by some workers, but was excluded 
from there by Tillyard (1916). It will be treated in another article. 
