356 Hon. T. L. Powys on Birds observed in the Ionian Islands, 3fc. 



252. Lesser Black-backed Gull. {Larus fuscus.) 



Not common ; occurs occasionally in immature, but is very rare 

 in adult plumage. 



253. Audouin's Gull. {Larus audouinii.) 



A fine specimen of this Gull was killed near Corfu in May 

 1857. I never saw it on any other occasion, although I am 

 tolerably sure it is not very uncommon. 



254. Mediterranean Black-headed Gull. {Larus mela- 



nocephalus, Natt.) 



Very common in winter in Corfu, and on the coasts of the 

 mainland ; breeds in the marshes of Albania and Dalmatia. 



255. Laughing Gull. {Larus atricilla, Linn.) 

 Common in winter in Corfu. 



256. Little Gull. {Larus minutus.) 



Tolerably common in winter, particularly in the yacht-harbour 

 of Mandrachio at Corfu. This species arrives about the end of 

 October, and leaves the country about the beginning of March. 



257. Caspian Tern. {Sterna caspica.) 



Occurs sparingly in winter at Corfu and on the coasts of 

 Epirus. 



258. Sandwich Tern, {Sterna cantiaca.) 

 Rare ; occasionally occurs in autumn at Butrinto. 



259. Gull-billed Tern. {Sterna anglica.) 



Not uncommon at Butrinto in January, February and March. 

 I have heard of the nests of this species at Livitazza, and am 

 informed that it breeds in great numbers at Mesolonghi. 



260. Common Tern. {Sterna hirundo.) 



Rare; occurs occasionally in spring at Corfu and on the 

 coasts of the mainland. 



261. Little Tern. {Sterna minuta.) 



Occurs sparingly at Corfu at the period of the vernal migra- 

 tion. 



263. Black Tern. {Sterna nigra.) 



Exactly the same remarks apply to this as to the above species. 



