BANKSIAN COCKATOO. 
unable to discriminate such, and, taken as a whole, this seems an ill-defined 
subspecies. 
Calyptorhynchus banksii northi Mathews. 
Type-locality, Dawson Eiver, Queensland. 
Range. North Queensland. 
This form is smaller than the typical one, specimens varying in the 
wing measurement from 390-425 mm. and averaging about 415 mm. As 
far as has been observed, it never develops the large bill associated with 
the preceding. 
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