THE BIRDS OF AUSTRALIA. 
locality is stated for those, so that we are still at a loss as to the 
breeding station, but it appears that the Antipodes Island birds are aU 
dark so-caUed immature exulans. It seems impossible to accept Loomis’ 
theory of dual immature stages with identical adult forms, as the adults 
are far from identical. It should be noted that the • bill features of 
chionoptera agree with those of exulans and differ notably from those of 
regia auct. = Rhothonia subgen. The latter is not definitely known from 
Austrahan waters at the present time, but in addition to Neozelanic 
breeding stations it may breed off the South American extremity on 
either or both sides, as, while Beck procured a specimen off the Chilian 
coast, there is another in the Museum at Buenos Ayres obtained near 
there at Bahia Blanca, a photo of which was sent me by Dr. Dabbene, 
Director, Zool. Section, Buenos Ayres Museum, Argentine, S.A. 
The recognition of the species at three such distant places cannot all 
be placed to the credit of wanderers, as, peculiarly enough, these two 
larger, whiter species are stated by aU observers to be more wary and 
less easy to secure. 
