610 Letters, Notes, and Extracts. 



Portugal, and received many other Orders and Honours from 

 Austria, France, Germany, Italy, Russia, Servia, and Spain. 

 His last communication to this Journal (" Sur le Waldrapp 

 deGessner") appeared as lately as January of this year (see 

 above, p. 139), and we have been informed that he continued 

 his usual work nearly up to the time of his decease, which 

 ook place at Geneva on the 18th of March last, in the 67th 

 vear of his a°;e. 



XXXV. — Letters, Notes, and Extracts. 



We have received the following letters addressed to " The 

 Editors of ' The Ibis ' " :— 



Note on the Eggs of Ross's Rosy Gull (Plate XX.). — In a 

 previous number of this Journal (' Ibis/ 1906, pp. 131-139) 

 Mr. S. A. Buturlin gave us a most interesting account of 

 his discovery of the breeding-grounds of the rare Ross's 

 Gull (Rhodostethia rosea) in the delta of the Kolyma River 

 in North-eastern Siberia. I have now received from him 

 some of its eggs, sent in order that I might have them 

 figured, as they are undoubtedly the first authentic eggs of 

 this species that have as yet been received in Europe. In 

 the article above referred to Mr. Buturlin has given such 

 full particulars of the nidification and breeding-habits that I 

 need say nothing further here, except to remark that these 

 eggs, as will be seen from the figures (Plate XX.), cannot be 

 mistaken for those of any other Gull, except perhaps those 

 of Xema sabinii. From the latter, however, they may be 

 distinguished by being decidedly green in the tone of their 

 colour, whereas those of Xema sabinii are not so, and by 

 having the surface of the shell dull and glossless, whereas 

 the eggs of Sabine's Gull are somewhat glossy. Together 

 with the eggs of Rhodostethia rosea, Mr. Buturlin has sent 

 me eggs of the following species, viz. : — Sterna macrura 

 (this being the species referred to in his article, p. 135 

 footnote), Larus glaucus, Phalaropus fulicarius, Nettion 



