393 



As the immature bird shows such slight differences from the young of allied species, I have 

 only figured, on the same Plate with Larus audouini, the adult male in summer dress above 

 described. 



In the preparation of the above article I have examined the following specimens : — 



E Mus. H. E. Dresser. 



a. Southern Danube, b. Crimea (Whitely). c,jun. Albania (H. Barclay), d. Egypt, winter, e, §. Tur- 

 kestan, July 30th, 1860 (Severtzoff). 



E Mus. Lord Lilford. 



a, b, ad. Smyrna, winter (Gonzenbach) . c, 6 . Isla Major, Guadalquivir, S. Spain, May 21st, 1877 (Ruiz). 



