PROCELLARIN^E. THALASSIDROMA. 265 



lume of his Birds of Europe, by Mr Gould, who states that a 

 fine specimen was found on the banks of the Ure, near Tan- 

 field, in Yorkshire, on the 8th of May 1837, and is in the pos* 

 session of Colonel Dalton of Slenningford. 



Procellaria Bulwerii, Bulwer's Petrel, Jard. and Selb. II- 

 lust. pi. 65. Bulwer's Petrel, Thalassidroma 1 Bulwerii, 

 Gould, Birds of Europe, pi. 449. 



320. THALASSIDROMA LEACIII. LEACH'S PETREL. 



Tail forked; bill and feet black; plumage greyish-black 

 tinged with brown ; quills and tail brownish-black ; smaller 

 wing-coverts and inner secondaries light greyish-brown ; fea- 

 thers of the rump, sides of abdomen, and outer lower tail- 

 coverts, white ; upper tail-coverts white, tipped with black ; 

 length nearly eight inches. 



Male, 7if, 20, 6 A, &, 1, i, &. 



This Petrel was discovered, in 1818, by Mr Bullock, in the 

 island of St Kilda. It has since been repeatedly met with 

 on various parts of the coast, and has several times been found 

 dead, or in an exhausted state, even far inland, during or 

 after stormy weather, in winter. It is said to be plentiful 

 on the Banks of Newfoundland, and on some parts of the 

 coast of North America. 



Procellaria Leachii, Temm. Man. d'Ornith. ii. 812. Tha- 

 lassidroma Leachi, Leach's or Fork-tailed Petrel, MacGilli- 

 vray, Brit. Birds, v. 



321. THALASSIDROMA WILSONI. WILSON'S PETREL. 



Tail even ; bill and feet black, but the interdigital mem- 

 branes yellow in the middle ; plumage greyish-black tinged 

 with brown above, sooty-brown beneath ; outer secondary 

 wing-coverts and some of the secondary quills light brown- 

 ish-grey, terminally edged with white ; rump, sides of abdo- 

 men, and outer lower tail-coverts white ; length seven inches 

 and a half. 



Male, 7^ 16, 6, A, IT%, li, T V 



This species, named by the Prince of Canino in honour of 

 the celebrated Scoto- American ornithologist, is said to breed 

 on various parts of the coasts of North America, and to occur 

 plentifully on the Atlantic Ocean. It is admitted into the 

 British Fauna as an occasional visitant, 



Thalassidroma Wilsoni, Bonap. Synops. 367. Wilson's 

 Petrel, Thalassidroma Wilsonii, Audub. Ornith. Biogr. iii, 

 486 ; v. 645. Thalassidroma Wilsoni, Wilson's Petrel, 

 MacGillivray, Brit. Birds, v. 



