Il8 TRANSACTIONS—PERTHSHIRE SOCIETY OF NATURAL SCIENCE. 
worms on the South Inch. The former breeds on islands on several 
of our lochs, but the Herring Gull, so far as I know, always nests on 
maritime cliffs. 
The Lesser {L. fiiscus) and the Greater Black-backed Gull (Z. 
inarmus) are much more maritime in their habits, though they, 
especially the former, may frequently be seen in winter as far up the 
river as Perth. The Lesser Black-back breeds on some of our inland 
lochs; but I have never heard of any breeding place of the Greater 
in our district. They range from the Arctic Ocean to the Mediter¬ 
ranean in Europe, whilst the former species extends as far as the 
Cape, and the latter through North America to Bermuda. 
The Glaucous Gull (Z. glaucus) is essentially a northern species, 
and breeds in all the countries included in ihe Arctic zone, the 
rigours of winter sending it occasionally to our shores. I have shot 
it in Orkney, and it has been recorded so far south as Devonshire, 
and once in France. 
The Kittiwake {Rissa tridactyla) is, like the last, an essentially 
maritime species, and is a migrant, coming to breed on our rocky 
coasts in summer, and seeking more genial climes in winter \ being 
found, according to the season, as far north as Nova Zembla, and as 
far south as the Caspian and the Mediterranean. 
The Pomatorhine Skua {^Stercorarius poinatorhinus\ Richardson’s 
Skua (A/, crepidatiis)^ and Buffon’s Skua (A/, parasiticus), are all 
represented in the Museum, having been procured at the mouth of 
the Tay. They are arctic birds, which seldom stray so far south, 
though Richardson’s Skua breeds in Orkney. 
Procellarid^. —The Storm Petrel i^Procellaria pelagica) is most 
frequently met with in mid ocean, and I have seen it in the Bay of 
Biscay, the North and South Atlantic, and, I believe, in the Indian 
Ocean. They breed on some of the rocky islands off our coasts 
Leach’s Petrel {P. Leucorrhoa) is, like all the others, entirely pel¬ 
agic in its habits, and is never found inland unless driven by the force 
of gales from its wild home among the storm-tossed waves of the 
Atlantic or German Ocean. . 
The Fulmar Fulmarus glacialis) is a northern bird; but though, 
strange to say, St. Kilda is one of its breeding places, it is more at 
home among the icebergs of Spitzbergen than in the more genial 
climate of the Tay. 
Alcad^e. —The Razor Bill (^Alca torda), the Common Guillemot 
{Lo 7 nina troile), the Black Guillemot ( Uria Grylle), and the Puffin 
{Fratercula arcticd), are all common birds on our coasts, and never 
found inland except when driven in by stress of weather. They are 
all arctic birds though they also breed with us. Large accessions to 
our home-bred birds visit and remain with us in winter, with the ex- 
