714 Captain P. W. Munn on the [Ibis, 



204. Arenaria interpres, Turnstone. 

 Included in v. Jordans' list. 



205. Larus canus. (Common Grull. 



Included in v. Jordans' list on the authority of Barcelo. 



20fi. Larus cachinnans. Yellovv-lef;ged Herring-Gull. 



Tliis is the only resident Gull, and is found in compara- 

 tively small numbers. Scattered pairs uest on the cliffs of 

 the coast. 



Obtained by v. Jordans. 



207. Larus marinus. Great Black-backed Gull. 



A few immature specimens were noticed during the 

 winter. 



Included in v. Jordans' list on the authority of Barcelo. 



208. Larus fuscus. Lesser Black-backed Gull. 



A few examples, both mature and immature, of this 

 species were observed during the winter. 



Included in v. Jordans' list on Barcelo's authority. 



209. Larus melanocephalus. Mediterranean Black-headed 



Gull. 

 I did not identify this species until 11 April, 1921 ; they 

 were then easily distinguishable from Larus ridibundus by 

 their black heads. 



210. Larus ridibundus. Black-headed Gull. 



C!ommon during the winter in the Albufera and marshes 

 and on the coast, and remaining until the end of March or 

 middle of April, when they have completely assumed their 

 brown hoods. 



Obtained by v. Jordans. 



211. Larus minutus. Little Gull. 



An immature example of this species, in handsomely 

 marked plumage, frequented a lagoon in the marshes near 

 Puerto Alcudia for some time at the end of March and 

 beginning of April, 



