A List of Irish Birds. 603 



Hydrochelidon hybrida (Pallas). Whiskered Tern. 



Has once occurred. {Thompson}. This specimen, shot in Dublin 

 Bay, in September, 1839, * s m ^ e Museum, from the collection 

 of the late Mr. T. W. Warren. 



'Sterna cantiaca (Gmelin). Sandwich Tern. 



Regular summer visitor, but rare and very local. Formerly bred 

 on the Rockabill, Dublin. Now in one locality, near Ballina, 

 Mayo. 



*Sterna Dougalli (Montagu). Roseate Tern. 



Very rare summer visitor, formerly breeding in a very few localities ; 

 Rockabill, Dublin ; Mew Island, Down ; 50 specimens once 

 received in June, from Wexford, a few years before 1837. 

 (Thompson.} Not seen for some years. 



*Sterna fluviatilis (Naum.) Common Tern. 



Regular summer visitor, breeding on lakes and shores. 



'Sterna macrura (Naum.). Arctic Tern. 



Regular summer visitor, and with the former the most common 

 species of Tern. Breeds on freshwater at Lough Carra, Mayo. 



*Sterna minuta (Linn.) Lesser Tern. 



Regular summer visitor, breeding on various parts of the coast. 

 Local, and less common than the two preceding. 



Anous Stolidus (Linn.) Noddy Tern. 



Native of America. Has once occurred. Two were shot off the 

 Tuskar Lighthouse, Wexford, in summer about 1830. (Thomp- 

 son} One of these, from the Warren Collection, is in the 

 Museum. The only occurrence in Europe. 



Xema Sabinei (J-Sabine). Sabine's Gull. 



Native of America. Rare and accidental visitor in autumn, when 

 it occurs in immature plumage. Some ten or twelve have at 

 various times been obtained. Three are in the Museum. 



Larus Philadelphia (Ord). Bonaparte's Gull. 



Native of America. Has once occurred. One shot on the Lagan, 

 near Belfast, ist February, 1848. (Thompson.}. Two " less 

 thoroughly authenticated " instances are also on record. 

 (Zoologist, 1855, p. 4762, and Zoologist, 1866, p, 306.) (Nat. 

 Hist Review, 1855, pp. 65 and 95.) 



Larus minutus (Pallas). Little Gull. 



Very rare and uncertain visitor in autumn and winter. 



*Larus ridibundus (Linn.) Blackheaded Gull. 



Resident, and breeds on marshes and on islands in freshwater lakes 

 from North to South of Ireland. The so-called Masked Gull 

 is now generally admitted to be a mere variety. A very large 

 colony breeds on a bog near Tullamore, in King's co. (Zoolo- 

 gist, 1889, p. 396.) 



