DUTCH AND ENGLISH BIRDS, 211 
Milvus migrans (Boddaert). 
Has occurred a few times in Holland on migration, has 
once occurred in the British Islands (L. Br. B. p. 99). 
Genus Elanoïdes. 
(Elanoides furcatus) (Linn). 
Genus Pernis. 
Pernis apivorus (Linn.). 
A scarce summer visitor to Holland, breeding in the 
provinces N. Brabant, Groningen and N. Holland. 
A rare summer visitor to the Br. Isl., sometimes breeding 
there. 
Genus Mierofalco. 
Hierofalco gyrfalco Linn. 
Visits irregularly the coasts of Holland on migration, 
one was obtained, Oct. 1849, near Noordwijk (Bouwstoff. 
prt. I, p. 61. Leyden Museum), an other one on 3 Dec. 
1864, near Zandvoort (Nederl. Tijdschrift v. de Dierkunde, 
prt. III, p. 243). — See also prof. Schlegel, Vog. v. Ned. 
p. 12 and Revue critique des oiseaux d'Europe, seconde 
partie, pag. 5, both implying the probability of it being 
only the norwegian form that visits Holland. Has once 
occurred in England (Seebohm Hist. B. B. i. p. 19). 
(Hierofalco candicans) (Gmelin). 
(Mierofalco islandicus) (Gmelin). 
Genus Falco. 
Falco peregrinus Tunstall. 
A visitor to Holland on migration. Formerly a common 
resident in the Br. Isl., now getting scarce. 
Falco barbarus Linn. 
Has twice occurred in Holland. The last time in 1886 
near Cromvoirt (Museum Zool. Society of Amsterdam). 
INotes from the Leyden Museum, Vol. XV. 
