A REVISION OF THE AUSTRALIAN COSSIDAE (LEPIDOPTERA) . 59 
inwardly oblique series of dark fuscous spots from beneath, apex; cilia 
white with fuscous bars. Hindwings with termen slightly rounded; in 
male white; in female dark grey; in both sexes with slender fuscous 
strigulae; cilia as for forewings. 
Queensland: Injune in December and January (W. B. Barnard) ; 
eight specimens. Type in Queensland Museum. 
43. Xyleutes didymoplaca n.sp. 
$i8v[jlo7t\clkos , twin-blotched. 
$ , 100 mm. Head whitish. Palpi 1 ; whitish. Antennae grey. 
Thorax whitish, anterior edge fuscous; with an inverted fuscous Y-mark. 
Abdomen whitish; apices of segments pale grey; tuft ochreous-whitish. 
Legs whitish ; tarsi dark fuscous with whitish rings. Fore wings 
moderately broad, costa gently arched, termen slightly rounded, oblique ; 
grey- whitish strigulated and reticulated with fuscous; a short oblong 
fuscous blotch beneath basal eighth of costa ; a pair of irregular confluent 
fuscous blotches, first median resting on fold beyond middle, expanded 
in mid-disc, continued by an oblique process ending abruptly beneath 
one-third costa; second at two-thirds, of roughly similar shape, but with 
costal process giving out a short serrate longitudinal line, posterior edge 
oblique and prolonged to beneath apex ; costa and area between blotches 
strigulated; terminal area finely reticulated; a terminal series of dots; 
cilia whitish, on dots fuscous. Hindwings whitish; strigulae scarcely 
indicated; cilia whitish. 
West Australia: Waroona in November (G. F. Berthoud) ; one 
specimen. Type in National Museum. 
44. Xyleutes lichenea Roths. 
Novit. Zool. 1896, p.601 ; Obthr. Lep. Comp, xl., f.26, 27, 41-43, 69, 70. 
olbia Turn. Proc. Roy. Soc. Q. 1915, p.54. 
North Queensland: Atherton. Queensland: Brisbane. 
45. Xyleutes mackeri Obthr. 
Lep. Comp, xi., p.49, f.14, 15. 
$ , 130 mm. Head fuscous-brown. Palpi 1 ; dark fuscous. Antennae 
dark fuscous ; pectinations in male 1 and a half. Thorax fuscous-brown 
with an inverted blackish U-mark, lateral portions of patagia whitish. 
Abdomen grey-brown. Legs fuscous-brown ; tibiae and tarsi dark fuscous. 
Forewings moderately broad, costa straight to three-fourths, thence 
arched, apex rounded, termen straight, oblique ; brownish with numerous 
dark fuscous strigulae, which form a fine network in terminal area; a 
broad whitish stripe in cell from base to one-fourth; a larger whitish 
area on middle third of costa, on costa suffused, sharply defined in disc ; 
a whitish elongate patch expanding from apex to disc at two-thirds ; 
terminal area whitish with a fine dark fuscous network traversed by 
brown veins; cilia brown. Hindwings with termen nearly straight; 
fuscous-brown; terminal area whitish with fine fuscous network; cilia 
brown. 
North Queensland: Cairns. 
