24 PROCEEDINGS OP THE NATIONAL MUSEUM vol.80 



at Gambell; unfortunately both are without further data. Both are 

 in worn plumage, and both have a little black on the rect rices. One 

 bird is otherwise in full adult plumage ; the other has a considerable 

 number of darkish markings on the head. 



HISSA TRIDACTYLA POLLICARIS Ridgway 



Pacific Kittiwakb 



Rissa tridactyla pollicaris Stejneger MS., Ridgway, in Baii'd, Brewer, and 



Ridgway, Water birds of North America, vol. 2, p. 202, 1884 (Kotzebue 



Sound, Alaska). 

 Rissa tridactyla kotzehuei, Nelson, Birds of Bering Sea, etc., Cruise of the 



Coricin, p. 105, 1883. 

 Rissa tridactyla pollicaris, Seale, Proc. Acad. Nat. Sci. Philadelphia, 1898, 



p. 131. — Bailey, Condor, vol. 27, pp. 103, 104, 1925. — Jaqixes, Auk, vol. 47, 



p. 358, 1930. 



Nelson found these kittiwakes about the shores of St. Lawrence 

 Island during the last days of June, 1881. Bailey found them "to 

 be abundant * * * at St. Lawrence Island, where they were 

 already nesting. I saw many of their eggs along the cliffs below 

 Sivunga on July 8." Seale saw great numbers of these birds. 



Hersey ^^ saw kittiwakes on the high cliffs near Gambell. Jaques 

 found the species common at sea near St. Lawrence Island. 



Collins collected seven specimens, all at Gambell, during October. 

 Most of the birds are unsexed. Four of them have the tail termi- 

 nally banded with black, a considerable extent of black on the hind 

 neck, interscapulars, and upper wing coverts, and black bills, and are 

 obviously young birds. The other three are adults with pale yellow 

 bills. The young birds are in fairly fresh plumage; the adults are 

 abraded. 



XEMA SABINI (Sabine) 



Sabine's Guil 



Larus sabini J. Sabine, Trans. Linn. Soc. London, vol. 12, pt. ii, p. 522, pi. 29, 



1819 (west coast of Greenland, latitude 75° 29', longitude 60° 9', Sabine 



Islands, near Melville Bay). 

 Xema saMnci, Nbxson, Birds of Bering Sea, etc.. Cruise of the Corwin, p. 109, 



1883. 

 Xema sahinii, Nelson, Report upon natural history collections made in Alaska, 



p. 56, 1887. 

 Xema saMvi, Bent, U. S. Nat. Mus. Bull. 113, p. 196, 1921.— Dwiqht, Bull. Amer. 



Mus. Nat. Hist, vol. 52, p. 328, 1925. 



Nelson notes that Sabine's gull occurs " in small numbers off St. 

 Lawrence Island, but is unknown from the other Bering Sea islands." 

 Bent writes that this gull breeds on St. Lawrence Island. 



a> Smithsonian Misc. Coll., vol. 66, no. 2, p. 4, 1916. 



