1920.] Birds of the Canary Tslands. lOl 



we procured from a hole iu a cave on June 9 a Storm 

 Petrel witli testes enormously developed (Ibis, 1914', pp. 78, 

 263). As I have already suggested in my paper on the 

 Tubitiares of the North Atlantic Islands (Ibis, 191+, 

 p. 450), it seems reasonable to suppose that the bird may 

 have intended to breed on the island. 



From the above notes I gather that T. "pelay'ica visits the 

 Canary Islands annually but at no settled period of the year. 

 It cannot therefore be said to be either a Summer or a 

 Winter Visitor, nor is it a Partial Kesident, for it does not 

 appear to breed regularly, if at all, in the Archipelago. Nor 

 can we class it an Occasional Visitor. 



Range. The range of the Storm Petrel is : Eastern por- 

 tions of the north Atlantic south to west Africa, also western 

 Mediterranean. It has been known to breed as far south as 

 the Desertas (Madeira group), and in winter ranges to the 

 Cape. Its distribution in the north Atlantic islands is fully 

 discussed in 'The Ibis,' 1914, pp. 448-450. 



Oceanodroma leucorrhoa leucorrhoa. Leach's Fork-tailed 

 Petrel. 



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

 nouv. ed. xxv. 1817, p. 422 — Type locality : France 

 (Picardy). 



The Fork-tailed Petrel is an Annnal Visitor, chiefly in 

 winter, to the Canary seas. 



It is recorded by Meade-Waldo as an occasional visitor in 

 winter ; he did not see it at any other time of the year 

 (Ibis, 1893, p. 206). I have examined a specimen in the 

 British Museum which he obtained in Tenerife on the 

 23rd of February (Ibis, 1914, p. 451). This must be 

 the bird mentioned by him in 'The Ibis,' 1889, p. 517. 



M. J. NicoU saw many 0. leucorrhoa just before sighting 

 Gran Canaria on the 12th of November, 1905, when 

 Naturalist on the late Lord Crawford's yacht ' Valhalla ' 

 (Ibis, 1906, p. 667). 



Leach's Petrel has been erroneously recorded (Orn. 

 Jahrb. 1913, p. 193) by von Thanner (from the reports 



