On the Birds of Southern Cameroon. 
479 
XVIII.— Further Notes on the Birds of Southern Cameroon .—• 
Part I. By G. L. Bates, M.B.O.U. With Descriptions 
of the Eggs by W. R. Ogilvie-Grant, M.B.O.U. 
(Plates VII.-IX. and Text-figs. 13 & 14.) 
The collection on which these notes are based was made 
from August 1908 to December 1910, mostly at my place of 
residence at Bitye, near the western bend of the lliver Ja (see 
map, ‘ Ibis/ 1908, p. 558). But a number of specimens were 
obtained on two trips further east. One trip—to mention 
the shorter one first—was made in January 1910 to a place 
perhaps seventy-five miles down the Ja from Bitye, called 
Esamesa. Though only a few days w r ere spent on this expe¬ 
dition, two birds that I had not collected elsewhere were 
obtained, one being Apalis jacksoni, hitherto known only in 
the Lakes-district of Africa. The longer trip occupied part 
of November and all of December 1908 and part of January 
1909. The part of this time not spent on the road was passed 
at a camp near Assobam, in the Njiem or Zima Country, 
a place a little to the north of Bizam which is marked on 
the map referred to. My camp was in a bit of the forest 
between the village and the small River Burnba, the principal 
tributary of the Ja. 
The number of species of which specimens were collected 
at Assobam was about a hundred and twenty, and a few more 
were shot or were pLinly seen so as to be known. These 
include some forms of wide range in Africa, and many West 
Coast species that had already been found by Emin and 
others in Central Africa, or later by the Ruwenzori Expe¬ 
dition or by Mr. Douglas Carruthers on the Upper Congo. 
But they include also forty-one species hitherto known, so 
far as I can learn, only from the West Coast, the range of 
which is thus extended 150 miles further into the interior of 
Africa than before, for Assobam is about that distance east 
