232 DUTCH AND ENGLISH BIRDS. 
Sterna anglica Montagu. 
An irregular visitor to Holland and the Br. Isl. 
One was shot 15 Aug. 1838 on the Brasemer-meer (Zool. 
Mus. of Leyden). 
Sterna cantiaca Gmelin. 
Breeds in large numbers on the North Sea Islands of 
Holland and on the dunes of Zeeland. A regular summer 
visitor to the British Islands. 
(Sterna fuliginosa) Gmel. 
Genus Wydrochelidon. 
(Hydrochelidon anaestheta) Scopoli. 
(Hydrochelidon hybrida) (Pall.). 
(Hydrochelidon leucoptera) (Schinz). 
Hydrochelidon nigra (Linn.). 
A common summer visitor to Holland, breeding generally 
on floating weed in marshes and all larger pieces of water. 
Formerly breeding in England; now chiefly occurring on 
migration. 
Genus Anous. 
(Anous stolidus) (Linn.). 
Genus Pagophila. 
(Pagophila eburnea) (Phipps). 
Genus Rissa. 
Rissa tridactyla (Linn.). 
A rare winter visitor to Holland. A regular summer 
visitor to the northern coasts of the Br. Islands where it 
breeds — thousands in extreme S. W. (H. S.). 
Genus Larus. 
Larus glaucus Fabricius. 
A winter visitor to Holland and the Br. Isl. 
Notes from the Leyden Museum, Vol. XV. 
