Pages XVIII. Notes on Dr. Hector's Paper on the Whales and Dolphins of the New Zealand Seas. By J. E. Gray, Ph.D., F.R.S. 93–97 XIX. On the Occurrence of a New Species of Euphysetes (E. pottsii), a remarkably small Catodont Whale, on the Coast of New Zealand. By Julius Haast, Ph.D., F.R.S. 97–102 XX. On Cheimarrichthys fosteri, a New Genus belonging to the New Zealand Freshwater Fishes. By Julius Haast, Ph.D., F.R.S. 103–104 XXI. Notes on some New Zealand Fishes. By Captain F. W. Hutton, C.M.Z.S. 104–107 XXII. Notice of Motella novŒ-zealandiŒ, n. s. By James Hector, M.D., F.R.S. 107–108 XXIII. On a New Genus of RallidŒ. By Captain F. W. Hutton, C.M.Z.S. 108–110 XXIV. Notes on the New Zealand Woodhens (Ocydromus). By Captain F. W. Hutton, C.M.Z.S. 110–112 XXV. Notes on the Ornithology of New Zealand. By Walter L. Buller, D.Sc., F.L.S., etc. 112–118 XXVI. Notes on the Little Bittern of New Zealand (Ardetta maculata). By Walter L. Buller, D.Sc., F.L.S. 119–121 XXVII. Note on Platycercus unicolor in the British Museum. By Walter L. Buller, D.Sc., F.L.S. 121–123 XXVIII. Remarks on Captain Hutton's Notes on Certain Species of New Zealand Birds. By Walter L. Buller, D.Sc., F.L.S. 123–126 XXIX. Notes by Captain Hutton on Dr. Buller's “Birds of New Zealand,” with the Author's Replies thereto 126–138 XXX. On the Birds of New Zealand (Part IV.) By T. H. Potts, F.L.S. 139–153 XXXI. Note on the Occurrence of Dermestes lardarius and Phoracantha recurva in Canterbury, New Zealand. By C. M. Wakefield 153–154 XXXII. Notes upon certain recently-described New Genera and Species of Coleoptera from Canterbury, New Zealand. By C. M. Wakefield 155–157 XXXIII. List of the Insects recorded as having been found in New Zealand previous to the Year 1870. By Captain F. W. Hutton, C.M.Z.S. 158–171 XXXIV. List of the Lepidoptera recorded as having been found in New Zealand previous to the Year 1871. By R. W. Fereday, C.M.E.S.L. 171–182 XXXV. Observations on the Occurrence of a Butterfly, new to New Zealand, of the Genus Danais. By R. W. Fereday 183–186 XXXVI. An Introduction to the Study and Collection of the Araneidea in New Zealand, with a Description and Figures of Cambridgea fasciata, L. Koch, from Chatham Island; and also of a New Species of Macrothele, Auss., M. huttonii, Cambr., found at Wellington, New Zealand. By the Rev. O. P. Cambridge, M.A., C.M.Z.S. 187–207 III.—Botany. XXXVII. List of the AlgŒ of the Chatham Islands, collected by H. H. Travers, Esq., and examined by Professor John Agardh, of Lund. Communicated by Baron Ferd. von Mueller, C.M.G., M.D., F.R.S., Hon. Mem. N.Z. Inst. 208–210 XXXVIII. Notes on the Flora of the Province of Wellington, with a List of Plants collected therein. By John Buchanan, of the Geological Survey of New Zealand 210–235 XXXIX. Descriptions of some New Zealand Lichens, collected by John Buchanan in the Province of Wellington. By James Stirton, M.D., Glasgow. Communicated by John Buchanan 235–241 XL. On some New Species of New Zealand Plants. By John Buchanan 241–244