On the Ornithology of Transvaal. 
339 
shorter; the bill, on the contrary, is rather longer (in the male 
and young male of H. clarissce the wing measures , the 
bill 7^ /// ); the colour of the throat is darker in the female 
of H. Clarissa , and the metallic spot more bluish violet*. 
From H. strophianus, Gould, the bird here described differs 
in its inferior dimensions, considerably longer bill, and tail not 
emarginate, but somewhat rounded: the uropygium is not 
brownish. It is distinguished from H. spencii by its somewhat 
superior size and by the want of the silver-green spot on the 
front ; the metallic colour has not a faint, but an extremely 
vivid gloss. 
I have named this species after Mr. L. Taczanowski, the 
eminent ornithologist of Warsaw. 
XXIX.— Additional Notes on the Ornithology of the Republic 
of Transvaal. By Thomas Ayres. Communicated by 
John Henry Gurney. 
(Plate VII.) 
[It will be seen by a reference to f The Ibis' for 1876, p. 433, 
that Mr. Ayres has already recorded 192 species of birds as 
observed by him in the Republic of Transvaal; the additional 
species contained in the following list are numbered con¬ 
secutively with the above, and have all been identified by me 
from specimens sent over by Mr. Ayres, except where the 
contrary is stated.—J. H. G.] 
193. Circus cineraceus (Mont.). Montagu's Harrier. 
Circus pygargus (Sharpe's Layard, p. 12). 
I found these Harriers very plentiful on my brother's farm, 
about fifteen miles from Potchefstroom, where they were 
hunting a large plot of ground from which the grass had 
been lately burnt, no doubt for insects or lizards billed by 
the fire; one of these Harriers which I opened had made a 
good meal of some Lark's eggs, shell and all. 
* I have no females of II. clarissce for comparison, and must therefore 
rely on Mr. Gould’s representation in the ‘Monograph of Trochilidse/ 
and Mulsant’s dissertation (Hist. Nat. Ois. Mouch. iii. 86). 
