33 i Mr. S. A. Buturlin on the 



in diameter, the other in the middle of a somewhat larger 

 lake, furnished with many tiny islands, spacious bogs, and 

 shallow grassy areas. Both colonies contained from ten to 

 twelve pairs of Rkodostetlda, accompanied by five or six 

 pairs of Terns, considerable numbers of Limosa uropygialis, 

 Phalaropus fulicarius, P. lobatus, Tr'wga maculata, Pavoncella 

 pugnax, Harelda glacialis, and a pair or two of Scolopax 

 gallinula, Colymbus arcticus, Squatarola helvetica, Charadrius 

 fulvus, and Totanus fuscus. Scolopax raddei also occurred, 

 but not commonly, while Anser serrirostiis, Calcarius 

 lapponicus, and a few individuals of Anser gambeli were 

 breeding in the immediate vicinity. I took one nest of 

 Somateria stelleri, hut failed to find that of S. fischeri, though 

 a breeding female was killed by one of my men. In these 

 colonies I procured seven downy young of Rhodostethia 

 rosea in different stages of growth, and some young Terns, 

 on the 6th and 7th of July. 



The newly-hatched Gulls in down are some 13 or 13 \ 

 centimetres in length, but they grow quickly and measure 

 from 18 to 20 centimetres by the time that the feathers 

 appear on the back and flanks. Eyes dark blackish brown ; 

 legs and feet intense fleshy tinged, with grey, or fleshy grey, 

 with brownish claws ; bill greyish fleshy with brownish tip. 

 The ground-colour of the downy dress is dusty yellow, 

 varying a tinge irrespective of growth: in some examples 

 it is pale sulphur-yellow, in others a somewhat burnt 

 wood-yellow, occasionally with a rusty tinge. This ground- 

 colour is densely covered with numerous irregular and 

 ill-defined, blackish-grey markings, taking up at least as 

 much space as the yellow ground-colour itself; they are pale 

 and quite ill-defined, on the flanks, while the middle of the 

 breast and belly is without them and whitish — they are 

 sharply defined and nearly black on the head, where they are 

 narrower. The markings vary in detail in different 

 specimens, but in all the pattern is somewhat longitudinal 

 on the body, transverse on the nape, and wedge-shaped on 

 the crown ; this pattern is much obscured, especially on the 

 bod} 7 , as the markings are so much broken up and wavy. The 



