142 Mr. J. H. Gurney's Notes on 



His account of its nidification in South Africa is as follows : 

 — " Specimens of this hawk are not unfrequently found along 

 the western coast, and I have also met with some about the 

 Jjangekloof, at least three hundred miles to the eastward of 

 Cape Town. In these situations it is often seen resorting, in 

 the evenings, to the poplar and other trees in the vicinity of 

 farm-houses, and upon such also it often builds its nest. The 

 latter is constructed externally of dry twigs, and within of hair 

 and feathers, and in it are deposited from three to four eggs, 

 during the months of August and September." 



I think that Bonaparte was fully justified in assigning this 

 species and its Indian congener Falco chicquera, Baud., to the 

 separate genus which he instituted (Rev. Zool. 1854, p. 535) 

 under the title of Chicquera ; as they appear to me to form a 

 group generically distinct both from the typical Falcons and also 

 from the various genera most nearly allied to the genus i^a/co. 



29. Hypotriorchis subbuteo (Linn.) Hobby. 



Hypotriorchis cuvieri (A. Smith). Cuvier's Hobby. 



These two Hobbies, though treated by Mr. Layard as belong- 

 ing to the same species, are unquestionably distinct. 



They both occur in South Africa, but both appear to be rare 

 in that region. 



H. cuvieri, described by Sir A. Smith in 1830 (S. Afr. Quart. 

 Journ. i. p. 392) is nearly allied to the peculiar Hobby of South- 

 eastern Asia, H. severus (Horsf.), and has been figured by Pro- 

 fessor Schlegel (Nederl. Tijdschr. Dierk. i. p. 123, pi. 5) under 

 the name oi Falco boschii [Cf. Ibis, 1864, p. 398). 



Erythropus AMURENsis(Radde). Eastern Redfooted Hobby. 



The occurrence of this species in South-eastern Africa is 

 recorded in my last paper on the birds of Natal {supra, p. 41), 

 Its congener, E. vespertinus, I have not seen from any locality 

 south of Damara Land. 



33. TiNNUNCULus RUPicoLOiDES f A. Smith) . Greater South- 

 African Kestrel. 



Mr. Ayres states that tnis is one of the commonest Falcons in 

 the Transvaal. He thinks that it is sometimes deprived of its nest 

 by Corvus capensis, Licht. (C. segetmn, Temm.), as on one occa- 



