258 Mr MacgilUvray’s List of Birds found in Harris , 
few specimens of stunted sylvan vegetation which occur, being 
found on the banks of the streamlets or lakes. These are of the 
following species : Pyrus aucuparia, Populus tremula, Corylus 
avellana, Betula alba ; to which are added several species of 
Salix. The islets and circular rocks of Harris are very nu- 
merous. They are principally grouped in the channel between 
it and North Uist. The marine aquatic birds are numerous. 
The passerine tribe is scanty. The rapaces are also rare ; but 
several species are found in greater abundance than in most dis- 
tricts of the Highlands or Isles: the Falco albicilla and F. ful- 
vus. Of the Owl kind I have seen none. The Oral he are not 
o 
very numerous in regard to species ; but the reverse in respect 
of individuals. Of Gallinse there are only three species : the 
Columba cenas very numerous, the Tetrao attagen, and T. lago- 
pus. Of Pici there are none, — of Coraces very few. The 
species of Corvus are the Corax and Cornix, both very common. 
The Rook is also an occasional visitant. The fresh water An- 
seres are not very numerous ; but there are some of them rare 
in other parts of Scotland : the swan, for example, which is but 
an occasional and winter visitant. The Anas bernicla, A. ery- 
thropus, A. anser, very common ; A. tadorna and A. mollissi- 
ma, — the two last marine species. Herons are numerous. The 
snipe is very abundant, breeding on the heaths. The Tringa 
alpina of Lin., which I suspect, from actual inspection, to be 
his T. cinclus in its summer plumage, breeds in great numbers 
on the heaths, and is to be found with the Charadrius pluvialis, 
which is very numerous. Lari are very abundant, both in re- 
gard to individuals and to species. Distinct in form and habit, 
they ought, perhaps, to be separated from the true aquatic 
birds. They are intermediate between the Anseres and Urina- 
tores (divers or sharp-billed aquatic birds), and the Grallae. 
The genera Larus, Sterna, and Procellaria, are examples. To 
which I would add the Pelecanus Bassanus, which is very pal- 
pably distinguished from P. carbo, or P. graculus, by peculia- 
rities of formation, such as having its mandible composed of se- 
veral bones, and of manners, agreeing in both with the Lari. 
Of Levirostres and Struthiones, there are, of course, none. The 
Anseres, then, are the most numerous ; next to them the 
