Page 66, The generic appellation of Opetiorhynchus, was adopted after the subjection of Mr. Gould; since its publication, however, I have considered that it might cause confusion with Furnarius, of Vieillot, as it is Temminck’s name for the identical same division, therefore only a synonym, and am on that ground induced to change and propose the name of Cinclodes, which has been adopted by a Continental writer. The species should be altered thus:— Page 66, Sp. 1. Cinclodes vulgaris, _G. R. Gray_. Page 67, sp. 2. C. Patagonicus, _G. R. Gray, List of the Genera of Birds_. sp. 3. C. antarcticus, _G. R. Gray_. Cinclodes fuliginosus, _Less._ Page 68, sp. 4. C. nigrofumosus, _G. R. Gray_. Page 69, Eremobius, being previously employed, it is changed to Enicornis, _G. R. Gray_. The species to En. phœnicurus, _G. R. Gray, List of the Genera of Birds_. Page 70, Rhinomya, being also previously employed; it is therefore changed to Rhinocrypta, _G. R. Gray_. The species to R. lanceolata, _G. R. Gray_. Page 76, for Synallaxis major, _Gould_, read Anumbius acuticaudatus, _G. R. Gray_. Furnarius annumbi, _Vieill._ L’Anumbi, _Azara_, No. 222. Anthus acuticaudatus, _Less._ Anumbius anthoides, _D’Orb. & Lafr._ Page 94, Fringilla fruticeti, _Kittl._ gives place to Fringilla erythrorhyncha, _Less. Voy. Thetis_, ii. p. 324. LIST OF PLATES. Plate I. Milvago albogularis. II. Craxirex Galapagoensis. III. Otus Galapagoensis. IV. Strix punctatissima. V. Progne modestus. VI. Pyrocephalus parvirostris. VII. —— nanus. VIII. Tyrannula magnirostris. IX. Lichenops erythropterus. X. Fluvicola Azaræ. XI. { Xolmis variegata, _in place of_ { Tænioptera variegata. XII. Agriornis micropterus. XIII. —— leucurus. XIV. Pachyramphus albescens. XV. —— minimus. XVI. Mimus trifasciatus. XVII. —— melanotis. XVIII. —— parvulus. XIX. { Uppucerthia dumetoria, _in place of_ { Upercerthia dumetaria. XX. { Opetiorhynchus nigrofumosus, _in place of_ { Opetiorhynchus lanceolatus. XXI. Eremobius phœnicurus. XXII. { Anumbius acuticaudatus, _in place of_ { Synallaxis major. XXIII. Synallaxis rufogularis. XXIV. —— flavogularis. XXV. Limnornis curvirostris. XXVI. —— rectirostris. XXVII. Dendrodamus leucosternus. XXVIII. Sylvicola aureola. XXIX. Ammodramus longicaudatus. XXX. { Ammodramus Manimbè, _in place of_ { Ammodramus xanthornus. XXXI. Passer Jagoensis. XXXII. Chlorospiza melanodera. XXXIII. —— xanthogramma.