1920.] Birds of the Canary Islands. 357 



Sterna paradisea. Arctic Tern. 



Cabrera includes Sterna senegalensis Swains, apparently 

 on his own authority (CatalogOj 1893, p. ^7) as rarely 

 occurring in the Canaries. He had no specimens and gives 

 no further information. There is no reason why the Arctic 

 Tern should not turn up in the Canary Islands in winter, 

 but till now we have no authentic record of its having been 

 found there. 



Hydrochelidon nigra. Black Tern. 



Mompo is responsible for the record of this species 

 (Catalogo de las Aves de Tenerife^ 1876, p. 258). His notes 

 are merely general and do not refer to the bird in the 

 Canary Islands. 



C.ibrera includes Hiidrochelidon fissipes Linn, as an acci- 

 dental migrant (Catalogo, 1893, p. Q7) cited by Mompo. 



Uria grylle. Black Guillemot. 



Cabrera notes (Catalogo, 1893, p. 69) that Viera cites 

 this species as an accidental visitor (Diccionario de Historia 

 Natural de las islas Canarias, 1866). 



Viera includes what he calls the " Tahoce (Uria) " on 

 p. 269 of his Diccionario, but the long description which 

 he gives does not fit the Black Guillemot. It is more like 

 the Common Guillemot, but it may be noted that the 

 " Tahoce " of the Canary Islanders to-day is the Madeiran 

 Allied Shearwater [Puffi^ius assimilis baroli) ! 



AUe alle. Little Auk. 



Meryulus alle (Linn.) was erroneously recorded hy 

 Godman (Ibis, 1872, p. 224) from the CanarieS;, who 

 says "• like many sea-birds this species is said to be 

 more numerous in the eastern Canaries, though found 

 occasionally throughout the group." Godman gives the 

 references from which he obtains his information as " Alca 

 minor Wei)b & Berthelot, Orn. Canarienne, p. 41 ; Bolle, 

 J. f. O. 1855, p. 177.'^ Now Alca minor of Brisson (who 

 is the author quoted by both Webb & Berthelot and Bolle 



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