368 Mr. W. R. Oi;ilvie-Graut on 



River and in the marshes. Tlie Whistling Tree-Duck had 

 a very curious local distribution ; two or three individuals 

 were seen at Maputi, where we first touched the marshes, hut 

 they were by no means common there and were never met 

 with affain till we reached what is called Lake Kamadan at 

 the end of the Botletle, where this was quite the commonest 

 Duck. 



The collection is by no means representative of the birds 

 of Ngamiland, for I was principally engaged in procuring 

 the fishes, and our sudden and hast}' departure left the 

 collections in an incomplete condition. — R. B. W. 



The following paper contains a list of the localities at 

 Avhich birds were collected and an account of the species 

 procured, with field-notes by the collectors. 



Examples of four new species [Cisticola kaldharia, Brady- 

 pterus bedfordi, Certhilauda kalaharice, and Trachyphomia 

 noJdlis) were obtained, also one new subspecies of Bulbul, 

 Pycnunotus tricolor ngamii. The first-mentioned of these 

 species has been already described in the 'Bulletin' of the 

 B.O.C. ; the remaining forms are described in the present 

 paper. 



For the sake of brevity, Dr. Reichenow's ' Die V()gcl 

 Afrikas ' is quoted throughout as "Reich."; Shelley's 'Birds 

 of Africa ' as '' Shelley " ; and Stark and Sclater's ' Fauna 

 of South Africa, Birds' is referred to as " Stark " or ''Stark 

 & Sclater " according to the volume quoted, vols. i. and ii. 

 having been written by the late Dr. Stark, while Mr. W. L. 

 Sclater was responsible for the authorship of volumes iii. 

 and iv. 



Localities where Birds ivere collected. 



Tamalakan Biver. 2700-3000 ft. 22nd July and 24th Au<,nist. 



Mababe Flats. 2900 ft. 24th July-15th August. 



Botletle River. 3000 ft. 1st December. 



Vryburg. IStli February-lOth April. 



