IV. 



of types under changed conditions, and especially in isolation. The birds 

 of the Neotropical region alone I have not attempted to collect, excepting 

 to illustrate the genera, as in a field already occupied by my friends Messrs. 

 Sclater, O. Salvin, and Godman, it were hopeless to attempt to add 

 anything to the fruits of their labours. In my collection of over 17,000 

 specimens there are about 128 types; and I have been fortunate enough 

 to secure specimens of several extinct species, e.g., Nestor producUcs, 

 Camptolmmcs lahradorius, Monarcha dimidiata, which, so far as I can ascertain, 

 do not exist in any other private collection in Europe. 



But on nothing do I look with more satisfaction than on the names 

 of the naturalists, explorers, and travellers, whose labours have aided in 

 enriching the collection. Among these, the following are but a few : — 

 A. L. Adams, d'Albertis, A. Anderson, C. J. Andersson, Audebert, Beavan, 

 Sir E. Belcher, Bernstein, Biddulph, Blakiston, Blanford, E. Blyth, Boie, 

 Brehm, W. E. Brooks, Bryant, Sir W. Buller, du Chaillu, Coues, Dall, 

 Danford, Charles Darwin, Pere David, Dresser, Elwes, Emin Pasha, Evers- 

 mann, Eyton, Fielden, O. Finsch, H. O. Forbes, Frazer, Gatke, Giglioli, 

 Godman, J. H. Gurney, sen. and jun., Gould, Sir J. von Haast, Habel, 

 Hancock, Harting, Hartlaub, Hector, von Heuglin, G. Henderson, Br. 

 Hodgson, A. Hume, Sir. W. Jardine, Jerdon, Jesse, Sir J. Kirk, Klein- 

 smidt, Kriiper, Kubary, E. L. Layard, Legge, Lord Lilford, J. J. Lister, 

 MandeUi, W. T. Marsh, J. Motley, A. Newton, Sir E. Newton, E. W. 

 Gates, Petherick, Prjevalsky, Radde, Wardlaw-Ramsay, G. E. Richards, 

 Ridgway, Riippell, Salvadori, O. Salvin, H. Saunders, St. John, Schlegel, 

 Sclater, H. Seebohm, Severtzof, G. E. Shelley, P. J. Selby, Sir A. Smith, 



