520 Herr E. Hartert on the 



PhALACROCORAX CARBO (L.). 



I think that Bock's Anas arbor ea, as well as his Pelecanus 

 yraculus, is referable to this species. At present there are 

 several large colonies of Cormorants in East Prussia. In 

 1884 I found a single uest on an island in the Kissain lake. 



Hydrochelidon nigra (L.). 



Common, and breeds in several localities. 



Hydrochelidon leucoptera (Schinz). 

 In May 1882 an adult specimen was shot near Johan- 

 nisburg. 



Sterna minuta, L. 



Loffler records the occurrence of this Tern in East Prussia, 

 but I did not see it anywhere. 



Sterna hirundo, L. 

 Breeds in many places. 



Sterna caspia, Pall. 



I saw a single specimen of this Tern in September 1882 

 among a lot of Sterna hirundo, but could not shoot it. 



Rissa tridactyla (L.). 



Obtained several times near Pillau in winter. 



Larus minutus, Pall. 



This pretty little Gull is not rare in autumn. I shot it in 

 the first plumage early in August, and late in November in 

 full winter plumage. Many years ago it was found breeding 

 not far from Danzig, and I have always suspected that it 

 still breeds somewhere in the most north-eastern part of 

 Germany. This becomes more probable since Herr Lindner 

 observed it on the Kurische Nehrung in 1890 during the 

 breeding-season. 



Larus ridibundus, L. 

 Breeds in large colonies. 



Larus canus, L. 



Common along the coast during the winter. 



