Expedition to the Eastern Canary Islands. 85 



It has been said that the Manx Shearwater, Pvffinus 

 p.pyffinus, breeds on Allegranza (Webb & Berthelot, Ornith- 

 ologie Canai-ienne, 1841, p. 43). It has also been cited by 

 Cabrera y Diaz (Catalogo de las Aves Archipielago 

 Canario, 1893, p. 65), who remarked that " it is common in 

 the eastern group, where it nests on the deserted rocks. ^' 



Mr. Meade-Waldo (Ibis, 1893) stated that the bird did 

 not seem to come to land. 



Specimens are rarely captured in the Canary Islands, and 

 I believe that when they are it is invariably in the winter, 

 during which months they are sometimes fairly common. I 

 could not discover any evidence of this bird having bred 

 here in recent years. 



Another Petrel which has been reported as nesting on 

 remote rocks of the Canary Islands is Oceanodroma castro. 

 This bird has been found breeding on the Azores, Porto 

 Santo, the Desertas (off Madeira), the Salvages, and the 

 Rombos Islands in the Cape Verde group. Up till the 

 present, however, I am not aware that any authentic case 

 has occurred of its breeding in the Canary Archipelago. 



Messrs. Webb and Beithelot and Dr. Bolle mention the 

 Great Black-backed Gull {Larus rnarinus) as breeding in the 

 island of Allegranza. I did not meet with the species my- 

 self, nor could I gather any information which might lead 

 me to suppose that L. mai'inus nests on the island at the 

 present day. 



The following is a list of the birds observed : — 



1. Corvns corax tingitanus. — Only one seen. Formerly 

 the Raven was said to be plentiful in Allegranza. They have, 

 however, been killed off in late years. 



3. Acanthis cannabina harterti. — Scarce and very shy. 



3. Anthus b. bertheloti. — Very plentiful and in full moult. 



4. Erythrospiza githaginea amantum. — A flock of Trum- 

 peter Bullfinches was seen in one of the craters. 



5. Sylvia conspicillatabella. — Only one Spectacled Warbler 

 was seen. 



