Studies on Australian and New Zealand Diatoms. V-The Rawson Collection of Recent Diatoms Prepared for Publication By E. J. Ferguson Wood 699–712 New Zealand Hepaticae (Liverworts). XI—A. Review of the New Zealand Species of Genus Metzgeria By E. A. Hodgson 713–725 Biology Some Coelozoic Myxosporidia from New Zealand Fishes. I-General, and Family Ceratomyxidae By Paul A. Meglitsch 265–356 Chemistry New Zealand Plant Fats, Parts II. and III. Part II—The Oil of Dysoxylum spectabile Hook By S. G. Brooker 157–159 Geology Some Carman Pelecypods from New Zealand By J. B. Waterhouse 425–442 Mass Movement and Landform in New Zealand and Hong Kong By Leonard Berry and Bryan P. Ruxton 623–629 On the Definition, Date, and Character of the Ross Glaciation, Early Pleistocene, New Zealand By Maxwell Gage 631–638 Contributions to the Mineralogy of New Zealand-Part V By C. Osborne Hutton 639–653 Observations on the Biology of the Immature Stages of Prionoplus reticularis White (Col. Ceramb) By John S. Edwards 727–731 Observations on the Ecology and Behaviour of the Huhu Beetle, Prionoplus reticulars White (Col Ceramb.) By John S. Edwards 733–741 Zoology Riblet Frequency as a Taxonomic Character in New Zealand Terrestrial Mollusca By R. A. Cumber 99–103 Studies on New Zealand Elasmobranchii. Part X—The Genus Echinorhinus, with an Account of a Second Species, E. cookei Pietschmann, 1928, from New Zealand Waters By J. A. F. Garrick 105–117 Ascidians of New Zealand. Part XIII—Ascidians of the Cook Strait Region By Beryl I. Brewin 119–120 Nymphs of the Genus Rhopalimorpha Dallas (Hemiptera, Acanthosomidae) By J. G. Pendergrast 141–147 Snare Building and Pupation in Bolitophila luminosa By J. Bronte Gatenby and Simon Cotton 149–156 The Takahe (Notornis mantelli Owen, 1848): A. General Survey By G. R. Williams 235–258