180 Transactions.—Zoology. 
to the main islands and habitats outside of them and of the Chatham and 
Auckland Islands, 9 are peculiar to the North Island, 16 to the South 
Island, 6 to the Chathams, 2 to the Aucklands, 1 is common and peculiar 
to the North Island and the Chathams, 2 are common and peculiar to the 
South Island and the Chathams, and 1 is common and peculiar to the 
main islands and the Chatham and Auckland Islands. In making this 
analysis I have assumed that Dr. Buller has seen good reasons for reaffirm- 
ing Platycercus alpinus as a species, notwithstanding the remarks on the 
subject in his larger work, and that there is also good ground for including 
the bird called called Platycercus rowleyi as a species; it seems, too, that 
Dr. Buller does not accept Finsch’s views in relation to Apteryx australis and 
Apteryx mantelli, Assuming these points, and looking, in the first place, at 
the species peculiar and common to both the main islands only on the one 
hand, and those peculiar to the North Island on the other, it will be seen 
that there is only one instance in which any genus represented amongst the 
latter is represented by species amongst the former, namely, in the case of 
Apteryx, there being only one species, out of the four belonging to that 
family, which is common to both islands, namely Apteryx oweni, unless we 
accept Dr. Finsch's views that Apteryx mantelli is only a variety of Apteryx 
australis; and then, looking at those species which are peculiar and common 
to both the main islands only on the one hand, and those peculiar to the 
South Island on the other, it will be seen that there are four instances in 
which a genus represented amongst the latter is represented by species 
amongst the former, namely, in the cases of Zenicus, Sphenwacus, Nestor, — 
and Apteryx. 
Of the species peculiar to the North Island there are seven, namely 
Orthonyx albicilla, Petroica toitoi, Petroica longipes, Turnagra hectori, 
Glaucopis wilsoni, Apteryx mantelli and Ocydromus earli, which have 
representative species in the South Island, namely, Orthonyz ochrocephala, 
Petroica albifrons, Turnagra crassirostris, Glaucopis cinerea, Apteryx australis, 
Apteryx haastii, and Ocydromus australis, fuscus and brachypterus, whilst 
the remaining two of those which are peculiar to the North Island, namely 
Pogonornis cincta, and Heteralocha acutirostris, although each belongs to & 
family of which there are genera in each island, have no special representa- 
tives in the South Island. In like manner two of the species peculiar to 
the South Island, namely Certhiparus nova-zealandie and Notornis man- 
telli, although each belongs to a family of which there are genera in both 
islands, have no special representatives in the North Island, whilst the 
genus Notornis is represented by Notornis alba in Norfolk Island, one of the 
most distant of the outlying districts assigned to the New Zealand zoological 
sub-region. 
