Migratory Birds of Madeira and the Canaries. 223 



79. fLARus Fuscus, Linn. 



Not mentioned by Berthelot. I however saw pairs of this 

 bird in May in Teneriflfe, and in June in Madeira. 



80. Larus marinus, Linn. 



W. & B. Orn. Can. p. 42; Bolle, J. fiir Orn. 1855, p. 177, 

 and 1857, p. 341. 



This, like the other Gulls included in their list, according to 

 the above authorities, breeds in the island of Alegranza. I am 

 not aware that I saw this Gull amongst the Canaries or in 

 Madeira, though some birds of this species followed om* vessel 

 from Lisbon till we were nearly in sight of the latter islands. 



81. Thalassidroma bulweri, Jard. & Selb. 

 Thalassidroma columbinus, W. & B. Orn. Can. p. 44; BoUe, 



J. fiir Orn. 1855, p. 178. 



T. bulweri, Vern. Hare. Ann. & Mag. Nat. Hist. ser. 2, 1856, 

 XV. p. 438. 



I found Bulwer's Petrel breeding in considerable numbers on 

 the small Deserta. It appears so nocturnal in its habits that 

 I never once saw it flying about in the daytime, though there 

 were plenty of another, smaller species. The nests I found were 

 for the most part low down at the foot of the clifi's under the 

 fallen rocks, where the birds were easily caught with the hand 

 while sitting on their eggs. 



Several other smaller species are mentioned by different 

 authors as inhabiting these seas : but as my expedition to the 

 Desertas unfortunately proved a failure, I am unable to say 

 which are to be considered resident. On leaving Funchal on 

 my homeward passage, some small Petrels followed the vessel 

 for a couple of days, which appeared to me to be T. pelagica. 

 I also saw similar Petrels on my previous voyage from the 

 Canaries to Cadiz in the month of May. 



82. fl'UFFINUS cinbreus. "i 



83. tI*UFFINUS anglorum. Y 



84. fPuFFINUS OBSCURUS. J 



Puffinus cinereus, P. anglorum, P. obscurus, W. & B. Orn. 



