Volume 78, 1950

Contents
| Botany | |
| A “Loose-lying” Form of the Brown Alga Hormosira | |
| By L. B. Moore | 48–53 |
| New Species of New Zealand Bryophytes | |
| By K. W. Allison | 93–96 |
| The Epiphytic Orchids of New Zealand and a New Species of Pterostylis from Mount Egmont | |
| By Edwin D. Hatch | 101–105 |
| 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 |
| The Bryophytes of Stewart Island, Part III. | |
| By William Martin | 485–501 |
| Studies of the New Zealand Nothofagus Species. | |
| By A. L. Poole | 502–508 |
| Root System of the New Zealand Mangrove. | |
| By G. T. S. Baylis | 509–514 |
| Chemistry | |
| The Reaction of Hydrogen Chloride with Dry Proteins. Part I—Collagen | |
| By R. W. Green | 291–300 |
| Geology | |
| An Eroded Coastline | |
| By R. Speight | 3–13 |
| Some Unusual Shore Platforms near Gisborne, North Island, New Zealand | |
| By Edmund D. Gill | 64–68 |
| Spilites, Serpentinites and Associated Rocks of the Mossburn District, Southland | |
| By J. J. Reed | 106–126 |
| 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 Takitimu Mountains, New Zealand | |
| By C. Osborne Hutton and J. D. McCraw | 342–343 |
| Stream Patterns in the Greymouth District. | |
| By Maxwell Gage | 418–425 |

| The Geology of the Northern Taringatura Hills, Southland. | |
| By D. S. Coombs | 426–448 |
| Slump Structures in the Waitemata Beds Around Auckland. | |
| By Ph. H. Kuenen | 467–475 |
| A Vitreous Sedimentary Bomb from Pyroclastic Material at Auckland, New Zealand. | |
| By E. J. Searle | 479–481 |
| Marine Ecology | |
| Ecological Study of Benhamina obliquata (Sowerby), a Basommatophorous Pulmonate in Otago Harbour. | |
| By Constance Borland | 385–393 |
| A Quantitative Study of Some Factors Affecting Tide Pools. | |
| By M. P. Ambler and V. J. Chapman | 394–409 |
| Palaeontology | |
| A Triassic Echinoid from New Zealand | |
| By H. Barraclough Fell | 83–85 |
| The Molluscan Fauna of the Pahi Greensands, North Auckland | |
| By C. A. Fleming | 236–250 |
| A Post-Tertiary Micro-fauna in a Concretion Containing Cancer novaezealandiae | |
| By W. N. Benson and H. J. Finlay | 269–270 |
| The Type of the Ammonite Madrasites mckayi (Hector). | |
| By J. Marwick | 482–484 |
| Zoology | |
| Notes on Synonymy among New Zealand Insects—1 | |
| By J. T. Salmon | 1–2 |
| New Zealand Flycatchers of the Genus Petroica Swainson—Part 1 | |
| By C. A. Fleming | 14–47 |
| Ascidians from Otago Coastal Waters | |
| By Beryl I. Brewin | 54–63 |
| A New Species of Acridiidae (Insecta: Orthoptera) from New Zealand | |
| By J. T. Salmon | 69 |
| Ctenophores from the Waters of Cook Strait and Wellington Harbour | |
| By Patricia M. Ralph | 70–82 |
| An Occurence in Wellington Harbour of Cyclotrichium meunieri Powers, a Ciliate causing Red Water, with Some Additions to its Morphology | |
| By Brian M. Bary, and R. G. Stuckey | 86–92 |
| Studies on New Zealand Hirudinea. (Part 1) Pontobdella benhami n.sp. | |
| By Laurence R. Richardson | 97–100 |
| 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 |
| New Zealand Recent Thyasiridae (Mollusca) | |
| By C. A. Fleming | 251–254 |
| 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 |
| Freshwater Triclads New to the Fauna of New Zealand. | |
| By Frances R. Nurse | 410–417 |
| Occurrence of Lonchoptera dubia Curran in New Zealand. | |
| By Roy A. Harrison | 449–450 |
| The Struthiolariidae: Reproduction, Life History and Relationships. | |
| By J. E. Morton | 451–463 |
| The Occurrence in New Zealand of the Enteropneust Balanoglossus australiensis. | |
| By J. E. Morton | 464–466 |
| The Occurrence of Leptomonas ctenocephali (Fantham, 1912) (Protozoa: Protomonadina) in the Intestine and Malpighian Tubules of the Cat Flea, Ctenocephalides felis (Bouche, 1835), in New Zealand. | |
| By Marshall Laird | 476–478 |
| Appendix | |
| Appendix | 515–525 |
| Obituary | |
| Thomas Hill Easterfield (1866–1949) | 381–384 |
| Proceedings | |
| Annual Meeting | i-xxxiii |
