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Show 590 MESSRS. SCLATER AND SALVIN ON [June 17, form of a "Synopsis" in the 'Magasin de Zoologie' for 1837 and 1838, and subsequently in a more extended form in his great work entitled 'Voyage dans l'Amerique meridionale,' of which the "Birds " form the third part of the fourth volume. Unfortunately, the account of d'Orbigny's birds was never completed, the " Synopsis " only proceeding as far as the Accipitres, Passeres, and Picarise, and the 'Voyage' being not quite so nearly perfect. In the remaining classes of birds many of d'Orbigny's discoveries have been since published by subsequent authors. (2) In 1845-47 Mr. Thomas Bridges, a well-known Corresponding Member of this Society, collected in Bolivia for the late Earl of Derby, and sent home a large number of birds, which are now in the Derby Museum at Liverpool. Other specimens of the same collector found their way, through Mr. Bridges's agent Mr. Hugh Cuming, into the British Museum and other collections; but the localities attached to these specimens are not always trustworthy, as the Bolivian collections were mixed up by Mr. Cuming with those previously sent home by Mr. Bridges from Chili and Meudoza. Two letters of Mr. Bridges will be found in the Society's ' Proceedings' for 1846 and 18471. Unfortunately no general account of Mr. Bridges's excellent collections was ever prepared or published. (3) Mr. J. B. Pentland, who was for some years H.B.M. Consul in Bolivia, collected many birds and other objects of natural history, some of which are now in the British and French national collections2. These also have never been worked out. (4) The Polish naturalist, M . Warszewiez, of Warsaw, explored the eastern slopes of Illimani and Sorata about 1852-53, and discovered some brilliant Humming-birds, which were described by Mr. Gould in the Society's 'Proceedings' for 18533. M. Warszewiez collected other birds, which passed into other museums on the Continent, and of which scattered notices have appeared. (5) The late Mr. David Forbes, the distinguished geologist, collected birds in Bolivia, some of which are now in Sclater's collection. He was the discoverer of the remarkable Grebe Centropelma mi-cropterum*, upon the Lake of Titicaca. (6) Lastly, Mr. Walter Davis, who accompanied Mr. Alexander Agassiz's exploring party to Lake Titicaca in 1875, obtained examples of six species of birds at Coroico, on the eastern slope of Illimani, as noticed in Mr. J. A. Allen's account of the birds obtained during this expedition5. Most of the other species noticed in this memoir, no doubt, occur in Bolivia as well as Peru, as Lake Titicaca 1 Letter from Thomas Bridges, C.M.Z.S., addressed to G-. E. Waterhouse, containing notes on Bolivian Mammals and Birds, P. Z. S. 1846, p. 7. "Notes in addition to former papers on South-American Ornithology," by Thomas Bridges, C.M.Z.S. P. Z. S. 1847, p. 28. a See Mr. Pentland's paper on the Bolivian Andes, Journ. E. Geogr. Soc. v. p. 70. 3 See P. Z. S. 1853, p. 61. * Ex. Orn. p. 189, pi. xcv. "Exploration of Lake Titicaca, by Alexander Agassiz and S. W . Garman. III. List of Mammals and Birds. By J. A. Allen, with Field-Notes by Mr. Garman," Bull. Mus. Comp. Zool. Harvard Coll. Cambridge, iii, p. 349. |