272 Recently published Ornithological Works. 
from the fact of no less than 660 species being catalogued 
in the present list, a number, considering the limited area 
investigated, indicating a bird population of great density, 
hardly perhaps surpassed by that of any other portion of the 
globe, not even excepting the richer areas of South America. 
Lord Walden has not gone into any analyses to show the 
relationship of the Burman avifauna to that of the sur¬ 
rounding countries; but his list seems to show that the great 
richness of this country in species appears to be due to the 
mingling of many Himalayan forms with a number of Ma¬ 
laccan types, which, with a considerable proportion of “ auto¬ 
chthones/' together make up the bird population of Burma. 
In his final note Lord Walden leads us to expect that con¬ 
siderable additions to this list will be made, both from the side 
of the Himalayas and also Malacca—a prediction already in 
part fulfilled, judging by some recent additions to the Burman 
avifauna communicated by Mr. Hume to his own periodical. 
The second part of the new edition of Layard's f Birds of 
South Africa 9 reached us in October last, since which time 
no further numbers have been issued*. 
This work, to which we have already alluded (Ibis, 1875, 
p. 505), is now brought down to nearly the end of the Cuckoos 
of the arrangement adopted. As all references are omitted, 
it is not easy for us to say what new ornithological matter is 
brought forward in this revised edition of the f Birds of South 
Africa 9 ; but it seems to us that by far the greater portion of 
the additional material is derived from Mr. Ayreses, Mr. T. 
E. Buckley's, and Captain Shelley’s articles on South-African 
ornithology published in this Journal, and Andersson's ‘ Birds 
of Damara Land/ edited by Mr. J. H. Gurney, as well as 
from papers by Mr. Sharpe himself. Mr. Sharpe, who, we 
believe, has the sole charge of seeing this book through the 
press, will have an apportunity of supplying his omission of 
* The Birds of South Africa. By E. L. Layard, E.Z.S. &c. New 
edition, thoroughly revised and augmented by It. Bowdler Sharpe, F.L.S. 
&c. Large 8vo, pp. 81 to 160, 2 plates. London: Oct. (errore May) 
1875. 
