462 NILAUS AFFINIS 
alone gives us any notes on its habits. These apparently 
closely resemble those of the other members of the genus in 
frequenting, in pairs or singly, the well foliaged trees in pur- 
suit of their insect food, where their presence is often betrayed 
by their piping note. The nest and eggs of this species have 
not yet been recorded. 
Neave obtained only one specimen in the Chambezi valley 
of N. E. Rhodesia, where he states that it is a rare bird. 
The type. was obtained by Stuhlman at Ngoma in the 
Unyamwesi country of German Hast Africa, and this appears 
to be its most northern recorded limit, while to the south 
Sheppard found it not uncommon in the Beira district. 
There are examples from the following localities in the 
British Museum. N. H. Rhodesia—Zambesi between Zumbo 
and the Kafue (Alexander), Chambesi valley (Neave), Fife 
(Manning); Portuguese EH. Africa — Chicowa (Alexander) ; 
Nyasaland—Zomba (Whyte), Mpimbe and Milanje (Sharpe). 
Nilaus affinis. (Pl. 56, fig. 1.) 
Nilaus affinis, Bocage, Journ. Lisb. 1878, pp. 204, 213, Caconda ; Gadow, 
Cat. B. M. viii. p. 170 (1883); Shelley, B. Afr. i. No. 716 (1896) ; 
Reichen. Vog. Afr. ii. p. 542 (1903); Sharpe, Handl. B. iv. p, 302 
(1903). 
Nilaus afer affinis, Neumann, J. f. O. 1907, p. 366. 
Adult.—Entire plumage black and white, with no rufous on the sides of 
the body, otherwise similar to N. nigritemporalis, with the same amount of 
black and white on the head and neck. “ Iris brown; bill black; feet slaty 
grey.’ Total length 6:0 inches, culmen 0:6, wing 3:4, tail 2:0, tarsus 0°85. 
Caconda, ¢, 9. 5. 78. (Anchieta). 
The White-flanked Brubru ranges from Benguella possibly 
to Lake Nyasa and Lake Tanganyika. 
In Benguella the species was discovered by Anchieta at 
Caconda, where according to his notes it was known to the 
