Birds in Mr. Gaike's Collection. 187 



mitted from boats on and after the 25th of July, St. James's 

 day — the feast known at Heligoland as " Jacob's day." 



SuLA BASSANA (Linnseus) . 



Very common in the vicinity of the island during my visit, 

 and, indeed, in every part of the North Sea ; all mature birds. 

 During a sixteen-days' cruise I did not see a single example 

 of the immature bird. 



Sterna caspia, Pallas. 



None in the collection, although this fine Tern is occasionally 

 seen off the island. Still nests, although in limited number, 

 on Sylt. Mr. Gatke has two eggs in his cabinet from that 

 locality, obtained fresh by himself during a visit he paid there 

 early in June 1874. (See Ibis, 1874, p. 401.) 



Sterna dougalli, Montagu. 



Two occurrences only have been noted by Mr. Gatke. 



Sterna anglica, Montagu. 



In the collection. An occasional visitant. 



Larus sabinii, Sabine. 



One in the collection, an immature bird. 



Larus rossi, Richardson. 



Shot February 5th, 1858, a mature bird in winter plumage. 

 A very fine and perfect example, most artistically set up by 

 Mr. Gatke. 



Larus minutus, Pallas. 

 In breeding-plumage. 



Larus leucopterus, Faber. 

 Not uncommon. 



Larus glaucus, Gmelin. 



The same. I saw a fine immature bird close to the cutter 

 as we were running for the island on the 13th September. 



Lestris longicaudus, Vieillot. 

 In the collection. 



PuFFiNus major, Fabcr. 



Verv uncommon. This, or a large Shearwater, has been 



