Mr. T. Ayres on the Ornithology of Transvaal, 281 
XXI.— Additional Notes on the Ornithology of Transvaal. 
By Thomas Ayres. Communicated by John Henry 
Gurney*. 
[In the volume of ^ The Ibis ^ for 1877, at p. 491, I corrected 
an accidental error in the enumeration of the species of birds 
observed in Transvaal by Mr. Thomas Ayres. Since then I 
have detected a slight additional error, one species having 
been enumerated twice. This having been corrected, the 
number hitherto observed by Mr. Ayres stands as 281 j and 
the additional species included in the following notes are 
numbered consecutively from that figure. Those species 
which are not numbered are such as have been previously 
mentioned.—J. H. G.] 
Aquila rap ax (Temm.). Tawny Eagle. 
Male, shot 12th July. Total length 26 inches, bill 2J, tarsus 
3|, wing 19J, tail lOJ. Irides light tawny brown; bill 
black, gradually changing to pale yellowish-ash towards the 
base; cere, gape, and feet light chrome-yellow, claws black. 
Weight 5 lb. 
This bird was brought to me by one of the Potchefstroom 
butchers; it frequented the slaughter-yard for some time, 
feeding on the ofial of the cattle and sheep; its last meal 
consisted of some dead putrid fowl it had picked up, and my 
olfactories were sorely tried whilst skinning it. It is 
evidently a very foul-feeding bird; a horrible stench per¬ 
meated its whole body, besides the musky smell noticeable 
also in the Vultures. This is the only specimen I have 
fallen in with for a long time. 
[A typical specimen, assuming the adult dress on the head 
and mantle, but otherwise in immature plumage.—^J. H. G.] 
CiRCAETus PECTORALis, Smith. Black-breasted Harrier 
Eagle. 
Female, shot 11th June, in full adult plumage. Irides 
light yellow; bill pale bluish horn-colour, darkest towards 
the tip; tarsi and feet dingy white. Weight lb. 
* See Ibis, 1877, pp. 339-354. 
