306 Proceedings of Royal Society of Edinburgh. [sess- 
In reference to the range of distribution over the other parts of 
Australia of the West Australian birds, the Table is chiefly the 
results of observations when on brief excursions to the other colonies 
during the many years I have been working at the “ Oology of 
Australian Birds.” But where personal knowledge of any species 
did not exist, I have referred to Gould’s and Dr Ramsay’s tabular 
lists, so as to render the distribution as complete as possible up to 
date. Bor, no doubt, as the various colonies are further explored 
and opened up, so there will be many extensions of localities, 
and probably not a few new species or varieties discovered, 
especially in the far interior and the north-west of our vast island 
continent. 
It occurred to me that the divisional line between west and north- 
west might be conveniently drawn about the Tropic of Capricorn or 
the North West Cape. The same imaginary line is also used to 
subdivide North from South Queensland. 
At some future time I hope to furnish a more complete list of 
the north-west birds of Western Australia, because, knowing the 
nature of the country, I am sensible that many hiatus occur in that 
column. 
There are between 760 and 770 known Australian birds. 
Rather more than one-third, or about 280, occur in Western Australia 
(in that portion south of the Tropics), and are distributed as 
follows : — 
[Table. 
