OF THE NETHERLANDS. 



131 



country; everyone will be thankful for the Royal warrant 

 of July 18 th 1908, by which an end was put to the horrible 

 slaughter among the terns on our coast. We may hope, 

 that the protection of our birds becomes continually more 

 general, so that finally every bird is protected, at least 

 during its breedingperiod. 



In the following lines I have given a list of all the 

 species of birds observed with certainty in the Netherlands. 

 Special mention is made of the occurrence of rarer birds, 

 also I have given some remarks on more common species, 

 based however only upon the material in the collections of 

 the Leyden Museum of Natural History and chiefly con- 

 cerning birds, received from 1 September 1904 till 1 Sep- 

 tember 1908, while some acquisitions of former days are 

 mentioned also. Behind the scientific names I have placed 

 in brackets the popular name, under which the bird is 

 commonly known in the Netherlands ; this will be useful 

 to the general reader in our country, who is not familiar 

 with the latin names. The number of the specimens received 

 in the four years is mentioned at each species. 



The birds of the Collection van Wickevoort Crommelin 

 are indicated with the number, that each object bears and 

 that agrees with the numbers in the Manuscript Catalogue 

 of van Wickevoort Crommelin, as well as with those in the 

 printed Catalogue of this collection edited by Dr. Jentink 

 (Mus. d'Hist. nat. Pays-Bas, XIV, 1894). The nomenclature 

 in the latter catalogue is not that of van Wickevoort 

 Crommelin. 



PoDICTP EDIDAE. 



1. Podiceps cristatus (L.). [Fuut]. 



We received 20 specimens in different plumage. There 

 is in the collection an albino of this species, killed in Holland 

 and purchased in 1866 from the Cabinet van Lidth de 

 Jeude (Schlegel, Cat. Urinatores, Podiceps cristatus, n°. 10). 

 The upperparts in this example have a light brown tinge. 



Notes from the Leyden Museum, Vol. XXX. 



