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 2\" , the 

 bill 7^'") ; the colour of the throat is darker in the female 

 of H. clarissee, 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 ornitholoerist 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 ' 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.). Montagues Harrier. 



Circus pygargus (Sharpens 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 killed 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 H. darisscs for comparison, and must therefore 

 rely on IVir. Gould's representation in the ' Monograph of Trochilidse,' 

 and Mulsant's dissertation (Hist. Nat. Ois. Mouch. iii. 86). 



