1920.] On the Birds of the Caiianj Islands. 97 



339. Coscoroba Candida Vieill. Coscoroba Swan. 



In looking over a collection of eggs made for me by 

 D. Docherty, I fiiul that in 1915 he took two fine clutches 

 of eight incnbatecl eggs on 18 Angnst and 15 October 

 respectively. Both these nests were in juncales and built 

 of dry jnncos. They are, therefore^ further examples of the 

 cnrions recnrrences to swamp-nesting — i. e., in deep watei's 

 (as is the custom of the Black-necked Swan), instead of on 

 an island or at least marshy ground. 



II. — List of the Birds of the Canary Islands, ivith detailed 

 reference to the Migratory Species and the Accidental 

 Visitors. Part V. Alcid.e — Phasianid.e. By David A. 

 Bannerman, M.B.E., B.A., M.B.O.U., F.R.G.S. 



Family Alcid.ii:. 



Alca torda. Razorbill. 



Alca torda Linn. Syst. Nat. 10th ed. 1758, p. ISO- 

 Type locality : Sweden. 



The Razorbill is a Rare Visitor. 



It has only been recorded on a few occasions and is first 

 mentioned by Webb and Berthelof^, who say it is found 

 on the shores of almost the entire Archipelago, but is more 

 numerous in the eastern group (Orn. Canarienne, p. 41). 



About fourteen years later Bolle^ published his notes to 



* Ci>dman in his paper (Ibis, 1872, p. 224) transfeiTed Webb and 

 Rertlielot's and also BoUe's remarks on the Eaznvbill to the Little Auk, 

 and gives their note.s on the liuzorbill under the latter species {Alle alle) 

 in his own paper — an unfortunate error whicli later led Cabrera to 

 tliink that Godnian saw the Little Auk in the Canaries and to quote 

 this in his list (Oatalogo, p. 70). Even more unfortunate is the inclu- 

 sion of the Little Auk as a visitor to the Canaries in the B. O. U. List of 

 British Birds, 1915, p. 280. A glance at the references given by 

 Godman will confirm this : he gives Alca viinor [of Brisson], which 

 is the Razorbill (and which name both Webb k lierthelot and Bolle 

 eniploj-ed in their writings), as a synonym of Merynhis alle (Linn.). 

 The Little Auk lias never occurred in the Canary Archipelago. This 

 question will be fully dealt with in Appendix B under Alle alle. 



SER. XI. VOL. 11. H 



