548 Mr. P. L. Sclater on the Geographical 



Palaearctic Region, brought up to the latest date, and not 

 too bulky in size. 



2. A complete list of the birds of the Continent of Africa, 

 south of the Sahara, with indications of their localities, 

 something after the fashion of the ' Nomenclator Avium 

 Neotropicalium J 



This would assist us to obtain a better idea of the extent 

 of the Ethiopian Avifauna than we at present possess, and 

 perhaps enable us to mark out the different subregions more 

 correctly. 



3. A synopsis of the birds of the Sunda Islands and other 

 islands of the Malay Archipelago down to Wallace's line. 



This would make a good supplement to our knowledge of 

 the Oriental Ornis, which has been so far advanced by recent 

 works on the birds of India and Burmah. 



4. A list of the birds of Siam and Cochin, which is much 

 wanted to extend our knowledge of the continental portion 

 of the Oriental Region, and might, I suppose, be easily 

 compiled from the specimens in the Paris Museum. 



5. A modern work on the birds of the South Pacific 

 Islands, or what I have called the Pacific Subregion. 



This, however, if I understand rightly, is a task which 

 Mr. Seebohm has already taken in hand. 



6. A revised list of the birds of the United States of 

 Colombia, where one of the richest avifaunas of the world's' 

 surface still remains un-catalogued. 



7. A volume on the birds of Chili and Patagonia, which, 

 taken in conjunction with * Argentine Ornithology,' would 

 tend to perfect our knowledge of the avifauna of the Pata- 

 gonian Subregion. 



APPENDIX. 

 Titles of the principal Publications referred to. 



(1) On tlie general Geograpliical Distribution of the Members of the 



Class "Aves." By Philip Lutley Sclater, Esq., M.A., F.L.S. 

 Joiirn. Linn. Soc. Lond., Zool. vol. ii. pp. 130-145 (1858). 



(2) Die Begrenzung zoo-geographischer Regionen voni ornithologischen 



Standpunkt. Von Dr. A. Reichenow. Zool. .Jahrb. (Si/st.) iii. 

 p. 671. 



