XX. 



I920 



] Alexander, Ansiraliav Species of Tuhinares. 73 



Summary. 



The Petrols found in Australian seas may be divided into those 

 species known to breed on our coasts and those which occur more 

 or less regularly as visitors from more distant breeding localities. 



When l)reeding birds are considered, the Australian coast-line 

 may be divided into four regions, eacli with its characteristic 

 species. These are : — 



(i) The coasts of Queensland and Ncnv South Wales (Eastern 

 region). 



(2) The coasts of Tasmania, Victoria, and South .\u>tralia, with 



Bass Strait (South-eastern region). 



(3) The south coast of Western Australia (South-western region). 



(4) The west coast of Western Australia (Western region). 

 Only one species [Pelagodyoina marina) breeds in all four regions, 



and only one [Piiffnius paci/iciis) is known to breed nortli of 

 28^' S. lat. 



BREEDING SPECIES. REGION. 



E. S.E. S.W. W. 



Pclagodroma marina . . . . . . x x x x 



Puffin us assimilis . . . . . . — • — x x 



Puffin us facificus . . . . . . x — — x 



Puffin us carneipes . . . . . . — ■ — x — 



Puffin us griseus . . . . . . x — - — — ■ 



Puffinus tenuirostris . . . . . . — - x — — ■ 



Pterodroma macroptcra . . . . — — x — 



Pterodroma cookii : . . . . . x — — — 



Pachyptila turtur . . . . . . — x — — • 



Pelecanoides urinairtx . . . . — x — — ■ 



Thalassarche cautus . . . . . . — x — — 



The visiting species whose claims to a place in our list are 

 admitted in this paper are as follows. It is not improbable that 

 some of them — e.g., Puffinus gavia — will ultimately be found to 

 breed on our coast-line. I have attempted to give an idea of 

 the regions in which they have been observed by dividing the 

 records into four groups — viz., those in (i) the South Pacific, 

 (2) Bass Strait and Tasmanian seas, (3) the Great Australian 

 Bight, and (4) the South Indian Ocean. 



Visiting Species. c o -^ '^^^^st.ana 



S. P.icific. Tasmania. Bight. S. Indian. 



Occanites oceanicus . . . . x x — x 



Occanites nereis . . . . . . x x — — - 



Fregetta tropica . . . . . . x — x x 



Frcgctta iuhulala . . . . . . (Unknown) 



Fregetta gr altar ia . . . . . . x — — - — 



Puffinus gavia . . . . . . x x — — 



Procellaria conspiciltata . . . . — — x x 



J'rocellaria par/\'ins(nii . . . . x — — — 



