Birds of St. Thomas' Island. 115 



53. ^Anous stolidus. 



Anous stolidus (Liun.) ; Salvadori, Orn. Golfo d. Guinea, 

 ii. 1903, p. 41 ; Bocage, Jorn. Sci. Lisboa, 1905, p. 89. 



a. S ad. (No. 3). Sao Thome. 18.i.09. 



A single specimen of the Noddy was captured by Alexander 

 on board liis boat. 



Bocage received several specimens from the islets o£ 

 Sette-Pedras and Rolas, together with eggs from the first- 

 named (Jorn. Sci. Lisboa, 1891, p. 84). 



54. Oceanodroma castro. 



Proce //ana sp. ? Bocage, Jorn. Sci. Lisboa, 1891, p. 84; 

 id. 1905, p. 90. 



Oceanodroma castro (Harcourt) ; Salvadori, Orn. Golfo 

 d. Guinea, ii. 1903, p. 41. 



Count Salvadori is undoubtedly right in his identification 

 of this Petrel from the minute account published by Bocage. 

 It is an interesting occurrence, and I regret that, when 

 I wrote my paper " On the Distribution of the Tubinares 

 in the North Atlantic Islands " {' Ibis,' 1914, p. 438), I 

 overlooked the fact that the Madeiran Fork-tailed Petrel 

 had been taken in the Gulf of Guinea. The specimen 

 which Bocage procured was captured by the fishermen of 

 Angolares (a fishing-village in St. Thomas) "at a great 

 distance from the shore,'' and I presume that the skin is 

 preserved in the Lisbon Museum. 



The type-locality of O. castro is the Desertas Islands 

 (Madeira Group), besides which it is known to breed in 

 the Azores, Salvage Islands, Cape Verde Islands, and 

 St. Helena. Lack of sufficient material induced me to 

 unite the Atlantic and Pacific forms of this Petrel ; but 

 in a recent paper (' Auk,' 1914, p. 388) Mr. T. Nichols 

 has shown that there are two distinct forms in the Pacific : — 

 O. castro cryptoleucura (Ridgw.), inhabiting the Sandwich 

 Group (Hawaiian Islands), and 0. castro bangsi Nichols., 

 recently described from the Galapagos and Cocos Islands. 

 I have not yet had an opportunity of comparing these two 

 subspecies from the Pacific Islands. 



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