SYSTEMATIC REVISION OF THE AUSTRALIAN THORNBILLS 103 
Acanthiza morgani Mathews, ib . ; new name for Acanthiza tenuirostris 
Zietz. 
Geobasileus tenuirostris uranie A. G. Campbell, Emu, xxv, 1925, p. 62 ; 
Shark Bay, Western Australia. 
Range . — From coastal mid- western Australia, south-east to the vicinity of 
Leigh’s Creek, Port Augusta, and the north of Eyre Peninsula, South 
Australia. 
Specimens Examined. — Twenty-eight from the following localities: West- 
ern Australia: Carnarvon, Shark Bay (type of G. t. uranie). Day Dawn, Lake 
Way, Naretha. South Australia: Stuart’s Range, Leigh’s Creek (type of 
tenuirostris Zietz), Coralbignie, Wertigo, Eyre Peninsula. 
Measurements. — Twenty-three adult specimens of both sexes: wing, 47-51 
(43T) ; tail, 38-42 (40 1); exposed culmen, 7-8 (7 6); tarsus, 16-18 
( 168 ). 
5, Acanthiza iredalei iredalei ; Sa, A. i. hedleyi ; 5b, A. i. rosinae. 
Male . — Dorsal surface greyish olive, lighter on lower back and feathers 
of forehead distally blackish brown with a curved subterminal band of white ; 
lores, feathers above and below eyes, and ear-coverts pale olive-buff, with 
narrow blackish brown margins ; wings hair brown, much lighter on outer 
margins of quills and upper coverts; upper tail-coverts cartridge buff to 
cream buff ; tail basally hair brown, merging into blackish brown, each 
feather broadly tipped and margined on outer web drab, with a white spot 
at tip of inner margin of all but central feathers ; extent of drab and white 
increasing outwardly to whitish on outer web of outermost feathers ; chin, 
throat and upper breast whitish, tinged pale olive-buff, the feathers distally 
finely margined blackish brown; remainder of ventral surface olive-buff, to 
cream buff on flanks ; under tail-coverts cartridge buff ; auxiliaries and under 
wing-coverts cream buff; inner margins of wing quills whitish. “Eyes pale 
buff ; bill and feet black.” 
Female . — Similar to male. 
