306 The Zoologist— July, 1866. 



two next named, till some shooters and egg-baggers, or oologists (so 

 they st3'le themselves) came to their breeding haunt, the Island of 

 Rockabill, slaughtered hampers-full of the then breeding birds, and 

 carried away indiscriminately all the eggs the}- could find. The con- 

 sequence is this ornament to the coast is lost, and Rockabill is now a 

 desert rock. I consequently treasure my few pairs of rosy terns, and 

 nothing would tempt me to shoot or take an egg of either the Sandwich 

 or rosy tern in summer. It is often very common in autumn ; this 

 was the case last September. 



Common Tern. — A regular summer visitor from middle of May. It 

 leaves in October. Is very common. 



Arctic Tern. — Is a regular summer visitor from end of April till 

 October. Not so common as the last. 



Whiskered Tern. — Has in one instance been procured in Dublin, 

 in 1846, by Mr. M'Coy : it was placed in the collection of Mr. T. W. 

 Warren, of Dublin. 



Little Tern. — Visits us in spring and autumn ; it is never very 

 abundant. Breeds in very small numbers. 



Black Tern. — Is of occasional occurrence. 



Whitewinged Black Tern. — Has occurred twice in Ireland, and 

 both times at the mouth of the Liffey. First shot in October, 1841, 

 by Mr. M'Coy ; second, by a Mr. Massey. 



Noddy Tern. — Has occurred to myself; is very rare. 



Sabine's Gull. — Very rare ; has only been met with three times, in 

 Dublin waters ; the last shot by myself, as recorded in the pages of the 

 * Zoologist.' 



Little Gull. — Very rare ; I have seen it. 



Bonaparte's Gull. — Very rare; I shot one in the Bay, in July, 

 1864 : another is recorded in the ' Zoologist' (Zool. 4762) as occurring 

 off Skerries, which is in this county. 



Brownheaded Gull. — Resident in some numbers : very plentiful 

 from July till March. 



Masked Gull. — Birds measuring the same as the masked gull occur, 



with the brown head. In spring and autumn I have often seen gulls 



with the mask. 



Kittiwake. — A regular summer visitant from middle of March ; 

 many remain all winter. 



Ivory Gull. — I cannot positively say I know this gull in this county, 



though I have seen a gull once or twice so ganuet-like in appearance 



• that I could not but think them ivory gulls. 



