THE BIRDS OF AUSTRALIA. 
P. australis Potts. I therefore designate as type-locality of P. magnirostris 
Gould, New Zealand. 
These numerous specimens are all identical in measurements, and aU 
agree in having the very wide bill mentioned by Gould and Potts. Where, 
then, does the P. vittatus of these authors breed ? I have seen specimens from 
St. Paul’s Island and Bass Strait which have the bill noticeably smaller, and 
these, I presume, must be the ones identified by Gould and Potts as typical 
P. vittatus. 
Through the courtesy of Dr. Peringuey, I have seen a nice series from 
Tristan d’Acunha which agree with the New Zealand specimens in the very 
broad bill, but are noticeably fighter in upper coloration. These I propose 
to name 
Prion vittatus keyteli, subsp. n., 
but the other subspecies I will deal with in the next articles. 
210 
