Volume 78, 1950

Contents
Volume 78, Parts 2 AND 3
| Zoology Pages | Pages |
| New Zealand Flycatchers of the Genus Petroica Swainson (Aves). Part II | |
| By C. A. Fleming | 127–160 |
| Additions to the Rotatoria of New Zealand. Part III | |
| By C. R. Russell | 161–166 |
| The Family Peloridiidae (Hemiptera) and Its Occurrence in New Zealand | |
| By Myra W. Carter | 167–170 |
| Auckland Island Coleoptera | |
| By E. S. Gourley | 171–202 |
| Notes on Staphylinidae. Chiefly from New Zealand. Part I | |
| By W. O. Steel | 202–212 |
| Notes on Staphylinidae, Chiefly from New Zealand. Part II | |
| By W. O. Steel | 213–235 |
| Studies on the Freshwater Ciliates of New Zealand. Part I | |
| By Brian M. Bary | 301–310 |
| Studies on the Freshwater Ciliates of New Zealand. Part II | |
| By Brian M. Bary | 311–323 |
| On Cryptochaeta, a New Genus of Earthworms; and a Nomenclatural Muddle Solved | |
| By W. B. Benham | 324–328 |
| Ascidians of New Zealand. Part IV—Ascidians in the Vicinity of Christchurch | |
| By Beryl I. Brewin | 344–353 |
| Ascidians of New Zealand. Part V—Ascidians from the East Coast of Great Barrier Island | |
| By Beryl. I. Brewin | 354–362 |
| Palaeontology | |
| The Molluscan Fauna of the Pahi Greensands, North Auckland | |
| By G. A. Fleming | 236–250 |
| New Zealand Recent Thyasiridae (Mollusca) | |
| By C. A. Fleming | 251–254 |
| A Post-Tertiary Micro-fauna in a Concretion Containing Cancer novaezealandiae | |
| By W. N. Benson and H. J. Finlay | 209–270 |
| Geology | |
| The Geology of the Mokohinau Islands, North Auckland | |
| By C. A. Fleming | 255–268 |
| An Intrusion of Porphyrite near Waihao Forks, South Canterbury | |
| By A. C. Amies | 271–279 |
| Two New Zealand Rivers Following Tertiary Transverse Furrows | |
| By A. R. Lillie | 329–341 |
| Antlerite, from Taktimu Mountains, New Zealand | |
| By C. Osborne Hutton and J. D. McCraw | 342–343 |
| Botany | |
| Some Aspects of the Life History of the Liverwort Symphyogyna hymenophyllum (Hook.) M. et N. | |
| By Margaret K. Finlayson | 280–290 |
| Studies of New Zealand Nothofagus. 1. Taxonomy and Floral Morphology | |
| By A. L. Poole | 363–380 |
| Chemistry | |
| The Reaction of Hydrogen Chloride with Dry Proteins. Part I— Collagen | |
| By R. W. Green | 291–300 |
| Obituary | |
| Thomas Hill Easterfield (1866–1949) | 381–384 |
