Rev. H. B. Tristram on the Ornithology of N. Africa. 415 
of the American Gos-Hawk being so unlike that of its European 
congener, besides remarking on some other points; but the 
length of our article warns not to try further the patience of 
our readers. 
We cannot, however, conclude without referring to the loss 
we have recently experienced in the removal from among us 
of one of the oldest, if not the very oldest, of British egg- 
collectors. The frequenters of the meetings of the Linnsean and 
Zoological Societies will henceforth look in vain for the kindly 
smile and hearty greeting of John Drew Salmon, one of the 
pioneers of oological discovery, and an active member of that 
band of zealous working men which numbered in its ranks Hoy 
and Heysham and Yarrell, besides others still happily spared to 
us. Long may they continue to enjoy the results of their hard- 
earned labours, and that they may be succeeded by a generation 
as indefatigable as they themselves were, is, we are sure, as much 
their wish as it is ours. Mr. Salmon, we are informed, has 
bequeathed his valuable cabinet of eggs to the Linnean Society, 
where we trust it will be preserved intact, as a monument to the 
memory of a thoroughly single-minded man, and an example to 
future naturalists of the care and discretion necessary in forming 
an eminently trustworthy oological collection. 
September, 1859. 
XLIII. On the Ornithology of Northern Africa. By the Rev. 
H. B. Tristram, M.A., F.L.S. (Part III. The Sahara, 
continued.) 
[Continued from p. 301.] 
44. Pratincola rubetra. (Whinchat.) 
45. Pratincola rubicola. (Stonechat.) 
Both Stonechat and Whinchat are common in the oases as 
winter visitants. The plumage of P. rubicola in the Sahara is 
much richer in colour than in specimens obtained on the coast, 
which are in their turn more brilliantly marked than the gene¬ 
rality of our British specimens. I have had, through the kind¬ 
ness of Sir W. Jardine, an opportunity of examining a series of 
the South African species ( Pratincola pastor , Strickland), and 
