282 THALASSIDROMID.E. 



known to nest on the east side, on the Bass Rock. It 

 nests in some of the islets off south Wales and in the 

 Scilly Islands, as well as on some of the islands off the 

 north and west coasts of Ireland. In autumn and spring 

 it is generally distributed in British waters, the majority 

 of the birds moving southwards in winter. 



General Distribution, The Storm-Petrel breeds in the 

 Faeroes and on the Lofoten Islands off Norway ; in the 

 Channel Islands and along the coast of Brittany and on 

 some of the Mediterranean Islands. In winter it visits 

 Madeira and the Canary Islands, wandering as far as Cape 

 Colony and even ascending the east const of Africa to 

 Zanzibar. It also visits Iceland, south Greenland, Labrador, 

 Newfoundland, and the Bay of Fundy, but it is not known 

 to breed on the American sea-board. 



Genus OCEANODROMA ReichenbacJi, Av. Syst. Nat. 

 1850, p. iv. 



Type : O.furcata (Gmel.). 



Oceanodroma one that runs on the ocean, from wKfavo's=ocean, $pa/zeIt/ = 

 to run. 



Oceanodroma leucorrhoa. LEACH'S PETREL. 



Procellaria leucorhoa Vieillot, Nouv. Diet. d'Hist. Nat. 

 xxv. 1817, p. 422 : Picardy, France. 



Procellaria leucorrhoa Vieill. ; JB. O. IT. List, 1st ed. 1883, p. 196. 

 Oceanodroma leucorrhoa Salvin, Cat. Birdt . M. xxv. 1890, 

 p. 348 ; Saunders, Manual, 2nd ed. 1899, p. 729. 



Leucorrhoa, from Xei;K6s = white, and oppos^ the rump; from the bird's 

 white hinder parts. 



Distribution in the British Islands. A Resident, breeding on 

 St. Kilda, the Flannan Isles, North Rona, the Outer Hebrides, 

 and on some of the islets off cos. Mayo and Kerry. Else- 

 where it is an irregular visitor, chiefly in autumn, and in 

 some winters is common off Cornwall. 



General Distribution. Leach's Petrel inhabits the north 



