102 SYSTEMATIC REVISION OF THE AUSTRALIAN THORNBILLS 
Acanthiza inornata mastersi North. 
Acanthisa mastersi North, Agr. Gaz. New South Wales, xii, 1901, 
p. 1,425; Albany, Western Australia. 
Acanthisa inornata submastersi Mathews, Aust. Av. Rec., i, 1912, p. 45 ; 
Stirling Ranges, Western Australia. 
Range. — Extreme south-west Western Australia. 
Specimens Examined. — Seventeen from the following localities: Warren 
River, Lake Muir, Irwin’s Inlet, Wilson’s Inlet, Torbay, Albany, Stirling 
Ranges. 
Measurements. — Sixteen adult specimens of both sexes: wing, 47-51 
(48 5); tail, 35-38 (36 3); exposed culmen, 8 5-9 5 (9); tarsus, 16-17-5 
(16-8). 
Subspecific Characters. — Much darker, more brownish, in colouration both 
above and below than typical inornata. Upper surface brownish olive ; median 
portion of under surface warm buff merging into dark olive-buff tinged 
citrine-drab on sides of breast, flanks, and under tail-coverts; dark margins 
to feathers of chin and throat more prominent. 
This race is no exception to the rule that almost all forms 
described before the literature of Australian ornithology 
became cluttered with hundreds of unnecessary trinomials 
are valid and easily recognized. 
It is plain that the birds from the Stirling Ranges are to 
be referred here, although occasional specimens are slightly 
paler than typical mastersi. 
ACANTHIZA 1 BE DALE I Mathews. 
There has been confusion as to the relationship of the 
three races admitted here, and unwarranted doubt has been 
expressed regarding the correct specific name. Briefly it may 
be stated that as Acanthiza tenui rost ris Zietz is preoccupied, 
it is clear that iredalei, which has line priority over morgani , 
becomes the name for the species, and there is no apparent 
reason for according other than subspecific rank to both 
hedleyi and rosinae. 
The peculiarly-restricted range of this species in South 
Australia and Victoria in unusual, but it should be noted that 
it overlaps the range, respectively, of the closely related 
reguloides and inornata only in the extreme east and west. 
Acanthiza iredalei iredalei Mathews. 
Acanthiza tenuirostris Zietz, Trans. Roy. Soc. S. Aust., xxiv, 1900, 
p. 112; Leigh’s Creek, South Australia. (Not Acanthiza tenuirostris 
Lafresnaye, Rev. Zool., 1841, p. 242.) 
Acanthiza iredalei Mathews, Bull. Brit. Ornith. Club, xxvii, 1911, p. 97; 
Lake Way, Western Australia. 
