288 Mr. D. A. Bannerman on an Ornithological 



is the only breeding-place of this species wliich I know of in 

 the eastern islands ; here the birds can bring up their young 

 more or less in safety. Fishermen occasionally land there, 

 but in many weathers the rock is quite inaccessible. 



A series was obtained from Fuerteventura, Lanzarote, 

 Graciosa, Montana Clara^ and Allegranza. 



Bill deep chrome, tip paler, patch vermilion; iris light 

 lemon-yellow ; eyelids orange ; feet chrome-yellow. 



Testes large or fairly large. 



Three eggs were given to me which had been taken on 

 the East Rock some time in April. In colour they do not 

 differ from the usual type of egg laid by this species and 

 measure 70 x 48, 65 x 48, 73 x 50 mm. 



Lams fuscTis affinis. British Lesser Black-backed Gull. 



Larus fuscus affinis Reinhardt ; Bannerman, Part I. 

 pp. 53, 72. 



The Lesser Black-backed Gull was not met with anywhere 

 in the eastern islands during the Expedition. It obviously 

 does not breed on any of the outer islands or rocks, as I 

 once thought might be the case. It may, however, be con- 

 sidered a fairly regular winter visitor, but occasionally birds 

 turn up in the spring and summer months. Thanks to 

 Mr. Witherby^s untiring efforts at ringing the young birds, 

 we are learning much more concerning the movements of 

 this and many other species. Mr. Witherby has kindly 

 forwarded to me the following two highly interesting 

 records. The first is that of a Lesser Black-backed Gull, 

 No. 33,912, marked as a nestling on August the 2ncl, 1913, 

 at the Fame Islands, Northumberland, which was recovered 

 by the captain of the Tenerife schooner ' Luz,^ while be 

 was engaged in fishing off Cape Juby (the nearest point on 

 the African mainland to the Canary Islands) on November 

 the 13th, 1913. The second instance_, which is of more 

 recent date, is that of another Lesser Black-backed Gull 

 marked at the Fame Islands, Northumberland_, on August 

 the 2nd, 1913, which was shot on the shore of Lanzarote on 



