80 RESIDENTS AND MIGRANTS. 
STORM PETREL. Procellaria pelagica (Linneus). 
Breeds in the Channel and Scilly Islands; on 
Lundy Island, Ailsa Craig, Iona, Staffa, and ‘Tresh- 
nish; in Skye, and in all three groups of the Western 
and Northern Isles. Mr. J. H. Gurney writes me 
word that he is informed that it breeds on small 
islands off the coast of Pembrokeshire. 
LEACH’S PETREL. Procellaria leachit (Temminck). 
Breeds at St. Kilda in the Outer Hebrides (where 
it was first noticed as a British bird by the late 
Mr. Bullock in 1818), and in the Isle of Rum. Capt. 
Elwes found it frequenting also the Isle of Mingalay, 
where, in limited numbers, it breeds in holes and 
cracks in the dry peat on the top of the cliffs. 
It is described by Mr. R. Gray as “strictly a west- 
ern species in Scotland ;” and two instances only of its 
occurrence on the east coast are recorded by him. 
In Ireland it has been repeatedly obtained in autumn 
and winter; and, according to Mr. Thompson, it was 
accurately described as breeding, in 1833, on rocky 
islets near Sline Head, Galway. 
On the English coasts it is not uncommon in the 
fall of the year, at which season, after a prevalence 
of north-westerly gales, it is sometimes met with at 
a considerable distance from the sea. 
