206 Mr. A. L. Butler on the 



Mr, W. R. Ogilvie-Gkant. — On the Birds procured "by Mr. W, N. 



McMillan's Expedition to the Sobat and Baro Rivers. Ibis, 1907, 



p. 578. 

 Mr. W. R. Ogilvie-Grant. — Descriptions of Three new Species of 



Birds from the Bahr-el-Ghazal. Bull. B. O. C. vol. xxi. p. 16. 



For specimens of some birds which I have not obtained 

 myself I am indebted to Mr. G. B. Middleton, of the 

 Steamers and Boats Department, Soudan Government, and 

 to M. de Vilmorin, who kindly allowed me to select some 

 skins from a small collection which he had made while 

 shooting on the Upper Nile in February 1906. 



For assistance in identifying specimens I am very grateful 

 to Mr. W. R. Ogilvie-Grant and the assistants at the Natural 

 History Museum, and also to Mr. M. J. Nicoll, Assistant 

 Director of the Giza Zoological Gardens. 



Brief itineraries of my two journeys alluded to in this 

 paper may be useful in giving the reader an idea of the 

 relative positions of the places mentioned, many of which 

 are not of sufficient importance to be found on ordinary 

 maps. 



Journey from Suakin to Kassala, ^c. (March to May, 1906). 



From Suakin I travelled twenty-five miles south along the 

 scrub-covered sandy plain between the mountains and the 

 sea, then turned south-west up the Khor Dahand Valley for 

 three miles, and up the steep Kolkilai Pass (five or six 

 miles) on to the Erkowit plateau. The top of the hill is 

 covered with grass and Euphorbias ; rocky " kopjes," 

 frequented by Klipspringers, are scattered about ; and there 

 are plenty of trees as well as a good deal of vegetation in the 

 ravines, especially those on the eastern side of the range, 

 which gets the damp atmosphere from the sea. The general 

 elevation of the plateau is just over 3000 feet, but the 

 highest points on it rise to 5077 and 4293 feet. The climate 

 is delightful, and a small hill-station is now being made 

 there. Noticeable birds on this hill are Francolinus erckeli, 

 Zoster ops abyssinica, Cinnyris habessinicus, &c. 



A few miles south of Erkowit the hills become much more 



