Birds of Princess Island. 597 



completing^ as they do^ his ornithological survey of all the 

 islands which lie in the Gulf of Guinea, besides adding very 

 materially to our knowledge o£ the avifauna of the Peak of 

 Kamerun. 



I have divided the collections into five sections repre- 

 senting the five distinct localities from which the birds 

 were obtained. I propose to deal with each collection 

 separately, and to publish a report ^ under each of the 

 following headings : — 



I. The Birds of Princess Island. > 

 II. The Birds of St. Thomas\ 



III. The Birds of Annobon. 



IV. The Birds collecfed on the Peak of Kamerun and 



immediate neighbourhood. 

 V. The Birds collected in the hinterland between 

 Kamerun and Abechir (French Soudan). 



In working out the birds from the three islands in the 

 Gulf of Guinea, I have essayed to give a complete list of the 

 species to be met with in each island, apart from whether 

 Alexander himself obtained specimens or not. At the same 

 time, every example which is contained in the Alexander 

 collection has been enumerated, and every species so repre- 

 sented will be found marked with an asterisk. 



At Alexander's personal request the collections with 

 which I intend to deal have been presented to the British 

 Museum, where they will shortly be incorporated in the 

 National Collection. As already mentioned, the birds 

 obtained are of very sj)ecial interest, and many of the 

 species, particularly those from the islands, were hitherto 

 only poorly represented or altogether wanting. 



The map (text-fig. 2) which appeared in my paper on 

 ''Birds from the West Coast of Africa" (Ibis, 1912, 

 p. 223) gives a good idea of the position of all the islands 

 in the Gulf of Guinea and their relation to the African 

 mainland. 



* As the reports are published ofRcially on behalf of the British 

 Museum, I have conformed througliout to Mr. Ogilvie-Grant's views of 

 uomenckituro, as it is under Lis direction the papers are published. 



