104 SYSTEMATIC REVISION OF THE AUSTRALIAN THORNBILLS 
Topotypical specimens in no way differ from the type of 
Acanthiza tenuirostris Zietz, which I have examined, and 
other material from South Australian localities. The birds 
from Shark Bay described by Campbell under Geobasileus 
tenuirostris uranie comprise three adult females and two 
immature examples. The adults are in worn plumage, which 
explains the lack of olive colour on the dorsal surface noted by 
Campbell. 
In length of bill and tarsus this form averages less than 
hedleyi and rosinae. 
Acanthiza iredalei hedleyi Mathews. 
Acanthiza iredalei hedleyi Mathews, Aust. Av. Rec., i, 1912, p. 78; 
Meningie, South Australia. 
Acanthiza winiamida Wilson, Emu, xvi, 1917, p. 169; Winiam, Vic- 
toria. 
Range . — From the Little Desert, mid-western Victoria, west and north- 
west to south of Port Augusta, South Australia. 
Specimens Examined . — Eleven from the following localities: Victoria : 
Winiam (type of winiamida). South Australia : Coombe, Salt Creek, near 
Meningie, Port Broughton. 
Measurements . — Eleven adult specimens of both sexes: wing, 49-53 
(501); tail, 38-43 (40 4); exposed culmen, 7 5-8 (8 1); tarsus, 17-18 
(17-3). 
Subspecific Characters . — Intermediate in colouration between typical 
iredalei and rosinae, being darker than the former and lighter than the 
latter. Dorsal surface deep to dark greyish olive; chin and throat greyish, 
tinged olive-buff, with blackish brown margins of feathers more marked than 
in iredalei ; remainder of under surface olive-buff to deep olive-buff, suffused 
citrine-drab to deep olive on sides of breast and flanks ; axillaries and under 
coverts deep olive-buff. 
This race closely resembles iredalei aud to accord it other 
than subspecific status is clearly unwarranted. Winiam 
material described under A. winiamida does not differ from 
typical hedleyi. 
Acanthiza iredalei rosinae Mathews. 
Acanthiza rosinae Mathews, Aust. Av. Rec., ii, 1913, p. 9; near 
Adelaide, South Australia. 
Range . — Samphire flats bordering the east and north-west shores of 
St. Vincent’s Gulf, South Australia. 
Specimens Examined . — Twelve from St. Kilda, near Adelaide, South 
Australia. 
Measurements . — Twelve adult specimens of both sexes : wing, 48-50 (49) ; 
tail, 39-43 (406); exposed culmen, 8-8 5 (81); tarsus, 17 5-19 (18). 
