289 



Idiodes argillina, n. sp. 



ct/oyiAAivos, clay-coloured. 



cj" , 44 mm. Head and thorax brown. Palpi about 1 ; 

 brown. Antennae dark grey. Abdomen grey; dorsum brown 

 towards base. Legs grey; anterior pair fuscous. Forewings 

 broadly triangular, costa gently arched, apex obtusely pointed, 

 termen slightly bowed, slightly oblique; brown with numerous 

 fine transverse fuscous strigulae, these are most numerous on 

 costa, present also towards margins, and across main veins; 

 a large suffused fuscous blotch, its margins composed of 

 coalesced strigulae, extends on costa from middle to apeXj 

 narrowing dorsally it terminates abruptly on vein 2; an in- 

 distinct, very narrow, interrupted, pale, oblique line from 

 apex, traversing the dark blotch towards f dorsum; cilia 

 brown. Hindwings with termen slightly rounded; colour and 

 strigulae as forewings, but without blotch; a suffused darker- 

 brown line from mid-dorsum towards J costa ; in this a small 

 fuscous discal spot; cilia brown. Underside similar. 



Nearest /. fictilis, Turn. 



Queensland: National Park (3,000-3,500 ft.), in 

 January; one specimen. 



Gen Xenomusa, Meyr. 



Frons smooth, not projecting. Tongue well developed. 

 Palpi short (1 or less), hairy beneath. Antennae in male 

 simple or bipectinate. Thorax not crested; beneath hairy. 

 Abdomen without crests. Femora smooth-scaled. Posterior 

 tibiae with all spurs present; in male not dilated. Forewings 

 with apex uncinat-e and slightly produced; cell over J, dis- 

 cooellulars nearly straight, or inwardly curved, 2 from f, 

 3 and 4 separate, 5 from or from above middle, rather weakly 

 developed, 6 separate or short-stalked, 10 from cell or short- 

 stalked with 7, 8, 9, 10 and 11 free. Hindwings with 2 

 from I or f , 3 and 4 separate, 5 obsolete or weakly developed, 

 6 and 7 separate, 12 closely approximated to cell as far as 

 middle. 



Meyrick placed this among the Oenochromidae. In X. 

 metallica, vein 5 of hindwings is obsolete, being concealed in 

 a fold of the wing membrane; in X. rxibra it is present, but 

 weak. I think the two must be regarded as congeneric in 

 spite of this and the difference in antennal structure. X. 

 I monoda, the type species, I have seen, but have no specimens 

 for examination. The genus should be placed, I think, in 

 Boarmiadae, of which it is a primitive form. In X. rubra 

 a forked median vein is plainly visible in the cell. 



