Introduction. 



The Swedish Mount Elgon Expedition, which left Sweden 

 at the end of February 1920 under the leadership of Director 

 S. A. Loven, Stockholm, as the name itself implies, had as its 

 chief field of activity in B. E. A. (Kenia Colony) the exploration 

 of the giant old volcano, Mount Elgon, on the boundary between 

 Uganda and Kenia Colony. 



The leader of the expedition, who was keenly interested in 

 entomology, had undertaken the collection of insects, and the 

 writer — the only zoologist in the expedition — was responsible 

 for the other zoological work. Still I was greatly assisted by 

 Mr. Loven in the collection of birds during the first period of 

 the expedition, and Dr. C Lindblom and Mrs. Ingeborg 

 Lindblom have also procured a few items to the collections, 

 but the great majority of specimens was collected and prepared 

 by myself. 



I wish to express here my gratitude to all those who have 

 in various ways supported and assisted me and contributed so 

 that this work now appears. In the first place I wish to address 

 myself to my esteemed tutor Prof. Dr. H. Wallengren, to 

 whom I am most deeply indebted, for it was on his recommen- 

 dation that I was appointed to accompany the expedition. With 

 extraordinary kindness and great interest he has always followed 

 my studies and has constantly given me advice and guidance, 

 which have always proved to be of the best. For all the benefits 

 I have enjoyed at the Zoological Institution of Lund I beg to 

 tender him my respectful and sincere thanks. 



In the next place I wish to express my thanks to Director 

 S. A. Loven, Stockholm, for having chosen me as the zoological 

 member of the expedition. 



I also wish to tender my expression of grateful thanks to 

 Professor Dr. Einar Lonnberg, Stockholm, under whose gui- 

 dance I first commenced the study of African birds. 



I am also gratefully indebted to Prof. 0. Neumann and 

 Geh, Regierungsrat Prof. Dr. Anton Reichenow, Berlin, 

 two of the greatest experts in the African bird-life. During my 

 studies at the Berlin Museum they supported and assisted me 

 in the most devoted and amiable manner, and the instruction 



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