Contents. Transactions. I.—Zoology. Pages Art. I. Descriptions of New Zealand Micro-Lepidoptera. By E. Meyrick, B.A. 3–68 II. Further Additions to our Knowledge of the New Zealand Crustacea. By Charles Chilton, M.A. 69–86 III. Notes on and a new Species of, Subterranean Crustacea. By Charles Chilton 87–92 IV. On the New Zealand Copepoda. By G. M. Thomson, F.L.S. 93–116 V. Notes on the Structure of Struthiolaria papulosa. By Prof. F. W. Hutton 117–118 VI. Notes on some Branchiate Gastropoda. By Prof. F. W. Hutton 118–131 VII. Additions to the Molluscan Fauna of New Zealand. By Prof. F. W. Hutton 131–133 VIII. Descriptions of new Land Shells. By Prof. F. W. Hutton 134–141 IX. On the New Zealand Siphonariidœ. By Prof. F. W. Hutton 141–145 X. Additions to the Isopodan Fauna of New Zealand. By Charles Chilton, M.A. 145–150 XI. On some Points of Difference between the English Crayfish (Astacus fluviatilis) and a New Zealand one (Paranephrops setosus). By Charles Chilton, M.A. 150–165 XII. On some newly-discovered New Zealand Arachnids. By W. Colenso, F.L.S. 165–173 XIII. On the Protective Resemblances of the Araneidea in New Zealand. By A. T. Urquhart 174–178 XIV. Remarks upon the Distribution, within the New Zealand Zoological Sub-region, of the Birds of the Orders Accipitres, Passeres, Scansores, Columbœ, Gallinœ, Struthiones, and Grallœ. By W. T. L. Travers, F.L.S. 178–187 XV. On two new Isopods. By Charles Chilton 188–190 XVI. On two Marine Mites. By Charles Chilton 190–192 XVII. Occurrence of a Species of Ophideres, Boisd., new to New Zealand. By R. W. Fereday, M.E.S.L. 192–193 XVIII. Description of a Species of Butterfly, new to New Zealand, and probably to Science. By R. W. Fereday 193–195 XIX. Description of two new Species of Heteropterous Lepidoptera. By R. W. Fereday 195–196 XX. Notes on a peculiar Neuration in the Wings of some Individuals of Percnodaimon pluto, a New Zealand Butterfly. By R. W. Fereday 197 XXI. On Diseased Trout in Lake Wakatipu. By W. Arthur, C.E. 198–203 XXII. Notes on the New Zealand Sprat. By W. Arthur, C.E. 203–208 XXIII. Notes on the Picton Herring, Clupea pilchardus (C. sagax, New Zealand form). By W. Arthur 208–213