A History of the Birds of New Zealand.

THE YELLOW-HEAD CLITONYX OCHROCEPHALA THE WHITE-HEAD CLITONYX ALBICAPILLA NEW-ZEALAND CREEPER CERTHIPARUS NOVÆ ZEALANDIÆ

THE YELLOW-HEAD CLITONYX OCHROCEPHALA THE WHITE-HEAD CLITONYX ALBICAPILLA NEW-ZEALAND CREEPER CERTHIPARUS NOVÆ ZEALANDIÆ.