THE BIRDS OF AUSTRALIA. 
of T. cTilororhynchus, and the feet yellowish-white in life without any blackish 
colour on the digits and tarsi. Bill black, hides black, legs and feet yellowish 
white. Point Cloates, N.W. Austraha.” 
The specimen was figured in the Monograph of the Petrels^ where it was 
pointed out that it was possibly immature, though in fuU plumage, save for 
the bill-coloration. Associated as a doubtful second specimen was a bird 
procured on Gough Island which was also black-billed, though differing shghtly 
in the coloration of the head and neck. I have stated that I believe the black 
bill is due to immaturity in that case, and I was impressed with that view 
when carefully examining the type of Th. carteri. I would point out that 
the bill though black has the flaky appearance noticeable in the bills of young 
Albatroses, as instance D. melanophris, and has not the clear black look 
characteristic of the bill of an adult Albatros. I had figured the specimen 
through the courtesy of the Hon. Walter Rothschild before my studies con- 
vinced me that it was immature, and it is here included because we do not 
know the adult stage from the same locality. 
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