BANKSIAN COCKATOO. 
“ Calyptorhynchus banksii macrorhynchus Gould. 
Northern Territory, 
North-west Australia. 
“ Caly'ptorhynchus banksii stellatus Wagler. 
West Australia.” 
In this outline it will be noticed that no birds are quoted from Central 
Australia, for instance. This was purposely done, as I only recorded the 
localities from whence I had examined specimens, and it was probable that 
birds from other localities might be referable to new subspecies. 
In the Austral Avian Record , Vol. I., p. 35, Apl., 1912, I separated 
“ Calyptorhynchus banksii fitzroyi. Differs from C. b. 'macrorhynchus in its 
much less massive bill. Type, Fitzroy River, North-west Australia.” This 
separation was due to the accession of specimens from Melville Island, which 
were utilised as typical macrorhynchus , in view of the fact that none were 
available from Port Essington, the exact type-locality. 
In my “ List of the Birds of Australia,” 1913, pp. 122-123, I suppressed 
this last subspecies, continuing the four subspecies recognised in the 
“ Reference List.” Zietz, however, in the South Austr. Ornithologist , Vol. I., 
p. 14, 1914, dealing with Melville Island birds, wrote : “ Calyptorhynchus 
banksii macrorhynchus ? These birds have a much stronger bill than speci- 
mens from North-west Australia, and may prove to be identical with the 
above. (No Northern Territory specimens for comparison).” 
This would seem to confirm the separation of fitzroyi. 
For the purpose of this revision I have carefully gone over all the 
material available, which is now fairly extensive, running into three figures, 
but still not sufficient to settle all the queries incited. That there is only 
one species involved is certain, but I agree with North that the subspecies 
are not well characterised, and, quaintly enough, probably the best is a new 
one, the Central Australian form. The huge bill is a feature of the Northern 
birds but many specimens are met without this character. It is certainly not 
diagnostic. The tail coloration, as well as that of the female, may prove 
valuable when longer series can be obtained, as it certainly is in some forms. 
At the present time I admit five subspecies and find that I am in agreement 
with North, though he only named three subspecies. 
Calyptorhynchus banksii banksii (Latham). 
Type-locality Sydney, New South Wales. 
Range. South Queensland, New South Wales, Victoria, South Australia. 
This, the first named form, is undoubtedly the largest. 
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