Order PASSERIFORMES. 
Family SYLV1IDM. 
No. 537. 
ACANTHIZA IREDALEI. 
THIN-BILLED TIT. 
(Plate 451.) 
Acanthiza ieedalei Mathews, Bull. Brit. Omith. Club, Vol. XXVII., p. 97, May 26, 
1911 : Lake Way, West Australia. 
Acanthiza tenuirostris Zietz, Trans. Roy. Soc. South Austr., Vol. XXIV., pt. n., p. 112, 
December 1900 : Leigh’s Creek, interior of South Australia. 
Not— 
Acanthiza tenuirostris Lafresnaye, Revue Zool., 1841, p. 242, 
Acanthiza tenuirostris Milligan, Emu, Vol. III., p. 103, 1903 (W.A.); North, Austr. Mus. 
Spec. Cat. No. 1, Vol. I., p. 281, 1904; Hall, Key Birds Austr., 2nd ed., p. 112, 
1906; Mathews, Handl. Birds Austral., p. 76, 1908; Jackson, Emu, Vol. IX., p. 136, 
1910 (W.A.) ; Whitlock, Emu, Vol. X., p. 200, 1910 (W.A.) ; Howe, ib., Vol. XVL, 
p. 174, 1917 (Review) ; id., ib., Vol. XVII., p. 56, 1917 ; Whitlock, ib., Vol. XX., 
p. 180, 1921 (W.A.). 
Acanthiza iredalei Mathews, Bull. Brit. Orn. Club, Vol. XXVII., p. 97, 1911 ; id., List 
Birds Austr., p. 217, 1913 ; id., Emu, Vol. XX., p. 31, 1920 (Detailed a/c.) 
Acanthiza morgani Mathews, Bull. Brit. Om. Club, Vol. XXVII., p. 97, May 26, 1911 : 
New name for A. tenuirostris Zietz as above (preoccupied). 
Campbell, Emu, Vol. XVIII., p. 259, 1919 (W.A.) ; id., Vol. XIX., p. 161, 1920 
(Error). 
Acanthiza iredalei iredalei Mathews, Nov. Zool., Vol. XVIII., p. 352, 1912 ; id., List Birds 
Austr., p. 217, 1913. 
Acanthiza iredalei morgani Mathews, Nov. Zool., Vol. XVIII., p. 352, 1912 ; id., List Birds 
Austr., p. 217, 1913 ; S. A. White, Emu, Vol. XIV., p. 189, 1915 ; id. , Trans. 
Roy. Soc. South Austr., Vol. XXXIX., p. 753, Dec. 1915; id., ib., Vol. XLL, 
p. 459, Dec. 24, 1917 ; Ashby, Emu, Vol. XVI., p. 234, 1917 ; S. A. White, 
ib., Vol. XVIII., p. 197, 1919. 
Acanthiza winiamida Wilson, Emu, Vol. XVI., part 3, p. 169, Jan. 15, 1917 : Winiam 
East, 12 miles S.E. of Nhill, Victoria. 
Acanthiza iredalei winiamida Wilson, ib. , p. 170. 
Distribution. Across Central Australia from Shark’s Bay, West Australia, to the 
Victorian Mallee. 
455 
