A. General Part. 



Itinerary of the Expedition. 



The following is a dated itinerary, showing the various 

 localities at which birds were collected, all of which will be found 

 in the map. 



April 10—18, 1920 — Nairobi, 5450 ft. and its environs. 



System and Nomenclature. 



From our expedition in Africa 1517 birds are brought home, 

 which belong to 330 different kinds, 10 of which are described for 

 the first time by me, and from what I have found after careful 

 examinations, are good and distinct. Although I am convinced 

 that in the collections from Mount Elgon there are several other 

 new forms I have yet refrained from describing anew such as 1 

 have not been able to establish fully as differing because of the 

 insufficiency of the series from other parts of Africa. In every 

 such special case I have mentioned this under the birds in 



