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 Pinsch's views in relation to Apteryx australis and 

 Apteryx manlelli. 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 Aptenjx oiveni, 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, Sphenmacus, Nestor, 

 and Apteryx. 



Of the species peculiar to the North Island there are seven, namely 

 Orthonyx albicilla, Petroica toitoi, Petroica longipes, Turnagra hectori, 

 Glaucoiris wilsoni, Apteryx mantelli and Ocydromus earli, which have 

 representative species in the South Island, namely, Orthonyx 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 a 

 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-zealandia and Notomis 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 Notomis is represented by Notomis alba in Norfolk Island, one of the 

 most distant of the outlying districts assigned to the New Zealand zoological 

 sub-region. 



