XEMARHOD OSTETHIAPA GOPHILA 8 2 1 



July, are dull brownish olivaceous, indistinctly blotched, chiefly 

 at the larger end, with dull brown, and measure about 172 by 

 1-30. 



RHODOSTETHIA, Macgill., 1842. 



1129. CUNEATE-TAILED GULL. 

 RHODOSTETHIA ROSEA. 



Rhodostethiarosea (Macgill.), Mem. Wern. Soc, v. No. xiii. p. 249(1824) ; 

 Dresser, viii. p. 343, pi. 594 ; Murdoch, Exp. Pt. Barrow, p. 123, 

 pis. i. ii. ; Saunders, Cat. B. Br. Mus. xxv. p. 167 ; id. Manual, 

 p. 659 ; Tacz. F. 0. Sib. O. p. 1048 ; Ridgway, p. 37 ; Lilford, 

 vi. p. 33, pis. 15, 16 ; L. rossii, Richardson, App. Parry's Second Voy. 

 p. 359 (1825) ; Xauin. xiii. p. 270, Taf. 388, figs. 3, 4 ; (Gould), B. of 

 Gt. Brit. v. pi. 63. 



ad. (Disco). Mantle pearl-grey ; primaries rather darker, the first 

 with the outer web black nearly to the tip ; secondaries tipped with white ; 

 rest of the plumage, and tail, which is cuneate, white, the under parts 

 tinged with rose-pink ; middle of neck encircled by a black band, broadest 

 behind ; bill blackish ; legs coral-red ; iris dark brown. Culinen 0'95, 

 wing 10 '1, tail 4'4, the middle feathers 0'8 longer than the outermost, 

 tarsus I'l inch. Sexes alike. In winter the black collar is absent, and 

 the under parts are quite white. The young bird has the crown and hind 

 neck clouded with dusky, the upper parts marked with sooty blackish and 

 buff, and the tail terminated with blackish brown. 



Hob. Franz Josef 's Land and the Polar seas : straying south 

 in autumn and winter, and has been then recorded once from 

 Yorkshire, several times from Greenland, once from the Faeroes, 

 once from Heligoland, once from St. Michael's, Alaska, and 

 numbers have been obtained at Point Barrow ; in Asia it 

 inhabits the Arctic Ocean. 



But little is known respecting the habits of this Gull, and its 

 nest and eggs have not been discovered. 



PAGOPHILA, Kaup, 1829. 



1130. IVORY GULL. 

 PAGOPHILA EBURNEA. 



Pagophila elmrnea (Phipps), Voy. N. Pole, App. p. 187 (1774) ; (Naum.), 

 x. p. 341, Taf. 263; Carte, Journ. R. Dubl. Soc. i. pp. 57, 60, 

 pis. 1, 2 (eggs) ; (Gould), B. of E. v. pi. 437 ; id. B. of Gt. Brit, 

 v. pi. 62 ; (Audubon), B. Am. vii. pi. 445 ; Dresser, viii. p. 349, 

 pi. 595 ; Saunders, Cat. B. Br. Mus. xxv. p. 301 ; id. Manual, 

 p. 685 ; Coliett, Ibis, 1888, p. 440, pi. xiii. (nestling and eggs) ; 

 Lilford, vi. p. 68, pi. 30 ; ? L. albus, Gunnerus, in Leems. Beskrif. 

 Lappl. p. 285 (1767) ; (Tacz.), F. O. Sib. 0. p. 1055 ; Kidgway,p. 24. 



3 H 2 



