Mr. J. H. Gurney on Birds from Natal. 149 



nigris. Long. 8" 2"' ; rostr. a fr. 8i"' ; al. vix ^" ; caud. 3" ; 

 tars. 13|"'. 



The ornithological department of the Lamprotornithince being 

 rather familiar to me, I at first sight referred this bird to the 

 L. sycobius, Peters ; but after a more careful comparison I have 

 little doubt that it will prove new. It belongs to the third di- 

 vision of the genus, as arranged in my monograph, and is nearly 

 allied to Lamprocolius jihoenicopterus, L. bispecularis (which I have 

 never seen), and L. sycobius. 



XVIII. — A Fourth additional List of Birds received from Natal. 

 By John Henry Gurney, M.P., F.Z.S. 



(Plates IV. & V.) 



The birds contained in the following list have been collected by 

 Mr. Thomas Ayres, to whose obliging assiduity I am also in- 

 debted for the observations accompanying them. In a few in- 

 stances I have appended some notes of my own, to which my 

 initials are attached. The additional species are numbered con- 

 secutively to those contained in my former papers on this subject 

 ('Ibis,' 1859, p. 234, 1860, p. 203, 1861, p. 128, and pp. 25-39 

 of the present volume). 



177. Spizaetus ayresii, sp. nov. (Plate IV.) Ayres's 

 Hawk-Eagle. 



Male. Iris light yellow ; base of bill ash-colour, tip black ; 

 cere and feet greenish yellow. 



This bird was shot near the coast in a very dense bush ; it is 

 extremely rare here. I know nothing of its habits ; the stomach 

 was perfectly empty. 



[This very handsome Spizaetus appears to me to belong to a 

 species different from any of the four African Spizaeti which have 

 hitherto been described, and I have much pleasure in proposing 

 for it the specific name of ayresii, in recognition of the zealous 

 cooperation which I have received in studying the ornithology of 

 Natal from my esteemed correspondent Mr. Thomas Ayres, by 

 whom the present specimen, which is the only one I have seen of 

 this species, was procured. 



