Mr. T. Ayres on the Ornithology of Transvaal. 289 



district ; Mr. Ayres has sent me an adult male of each race 

 from thence, both shot in December 1883. 



P. verreauxi ranges as far north as Mombasa, from whence 

 I received an adult male, which was also recorded in 'The 

 Ibis ' for 1881, p. 127.— J. H. G.] 



TocKus ERYTHRORHYNCHUS (Gmcl.) . African Red-billed 

 Hornbill, 



These Hornbills are plentiful about the river Limpopo, 

 both singly and in small companies ; in our winter months, 

 when fruits are scarce, they may be often found feeding on 

 certain bulbous roots which grow plentifully in patches along 

 the banks of the river, and of which the Francolins are also 

 particularly fond. It is not an uncommon occurrence to flush 

 a lot of Francolins, Jardines, Babbling-Thrushes, Spreos, and 

 these Hornbills all together ; they evidently feed together 

 very amicably on much the same diet, though the Spreos, 

 no doubt, look out for insects more than for bulbs. 



[Mr. Ayres has sent five specimens of this Hornbill, 

 obtained by him in the neighbourhood of the river Limpopo, 

 and from these I have taken the following measurements : — 



In all these specimens the ear-coverts are white, but with 

 the central portion of each feather slaty black, which causes 

 a general eflPect of dark grey ; the feathers above the ear- 

 coverts are similarly marked, but with the white in each 

 feather much more predominant. — J. H. G.] 



EsTRELDA ERYTHRONOTA (Vicill.) . Black-checkcd Wax- 

 bill. 



Male, AHei Poort, river Limpopo, 5th August, 1885. 



This is not a common species on the banks of the Limpopo, 

 but when found it is generally in small companies amongst 



