Expedition to the White Nile. 257 



tick-tick-tick. When the bird is flying the wings appear 

 conspicuously brown. 



Adult. Iris brown ; bill black; legs and feet dark brown. 



43. ACROCEPHALUS PALUSTRIS (Bcchst.). 



We obtained only one Marsh- Warbler, at Shebesha on 

 April 23rd. 



Adult. Iris light hazel ; bill horn-colour ; legs and feet 

 yellowish brown. 



44. AcROCEPHALUS STREPERUS (Vicill.). 



The only Reed-Warbler recognised was obtained at Kawa 

 on April 11th. 



Adult. Iris light hazel ; bill, upper mandible black, lower 

 yellowish; legs and feet dark brown. 



45. Hypolais pallida (Hempr. et Ehr.). 



This species was everywhere exceedingly common, from 

 our first to our last camp. Its sharp " chack-chack " call- 

 note and its short, rather rasping song resounded from every 

 tree. 



This Warbler and the Lesser Whitethroats, which also 

 swarmed, were a great nuisance to the collector. A thick 

 bushy tree often contained 20 or 30 of these restless little 

 birds. They were too tame to be driven out of it, while 

 to make sure that none of them were of any other species 

 was a tedious and sometimes impossible task. We never 

 saw them in pairs, and there was no sign of their breeding or 

 intending to breed in the district. 



Adult. Iris hazel ; bill brown ; legs and feet pale brown. 



46. Phylloscopus trochilus (Linn,). 



We saw and obtained the Willow-Warbler at Kawa on 

 April 11th and at Shebesha on April 22nd. 

 Adult. Iris hazel; bill, legs, and feet brown. 



47. Phylloscopus rufus (Bechst.). 



The only Chiffcliaflf' identified was one obtained on May 1st 

 at Gerazi. 



Adult. Iris hazel ; bill brown ; legs and feet dark brown. 

 SER. VIII. — vol. I. 8 



