118 BIRDS OF THE COMMANDER ISLANDS. 



5 (■')). Urinator lumme (Guxx.) IJj. 



Very common resident on Bering Island. Breeds aVso on Copper 

 Island. 



6 a lomvia arra (Pall.) 17. 



Common summer resident on both islands. 



7 (7). Uria troile californica (Bryant) 20. 

 Sparingly among the foregoing species. 



8 (8). Cepphus columba (Pall.) 21. 



Common summer resident on both islands. 



9 (9). Cepphus carbo Pall. 21. 



Occasional (?) during the spring migration. Two pairs were observed 

 by me on Bering Island April 28, 1883. 



10 (12). Synthliboramphus antiquus (Gm.) 23. 



Breeds on both islands, but more numerous on Copper Island. Win- 

 ters probably ou the open sea, not very distant, since a few were ob- 

 served and one shot at Bering Island in the beginning of January, 

 1883. 



11 (13). Simorhynchus pygmaeus (Gm.) 23. 



As the foregoing species. Quite a number were observed and shot 

 at Bering Island in December and January. 



12 (14). Simorhynchus cristatellus (Pall.) 32. 



A regular but not very numerous summer resident of both islands, 

 wintering like the foregoing species. 



13 (15). Simorhynchus pusillus (Pall.) 35. 



I only met with this species on Bering Island in winter. Dybowski's 

 statement of it nesting there is very doubtful. He also asserts that he 

 has collected, or observed, it on Copper Island, but I am unable to either 

 confirm or deny this statement. (Dyb. & Tacz., Bull. Soc. Zool. Fr., 

 1884, Extr. p. 3.) 



14 (10). Cerorhinca monocerata (Pall.) 331. 



182Q.—Alca monocerata Pallas, Zoogr. Ross. As., II, p. SG'Z.—Ceratorlnjncha Cassix, 

 Perry's Exped. Jap., II, p. 233 (1857).— SwiNH., P. Z. S., 1863, p. 330.— /rf., 

 Ibis, 1874, p. 166.— Whitely, Ibis, 1867, p. 209.— Blakist. aud Pryer, Ibis, 

 1878, p. 211.— lid., Tr. As. Soc. Jap., VIII, 1880, p. 180.— lid., ibid., X, 1882, 

 p, 92.— Blakist., Amend. List B. Jap., p. 32 (18Si).— Simorhynchus m., 

 SCHLEG., Mus. P. B.jUrin., p. 26 (1867).- Cerorhinavi., Dall and Bannist., 

 Tr. Cbicag. Acad., I, 1869, p. 309.— Taczan., J. f. Orn., 1876, p. 203.— /rf., 

 Orn. Fauii. Vest. Sibir., p. 74 (1877).— Irf., Bull. Soc. Zool. France, 1877, p. 

 52,— Ceror/iincam., STEJNEGEK,Re8.0rn.Explor.Kamt8cb., pp. 314,331 (1885). 



1827.— Pluihris cerorhynca Bonap., Zool. Journ., Ill, 1827 (p. 53). 



IS28.— Cerorhinca occidentalis Bonap., Ann. Lye. N. Y., IV, 1828 (p. 428). 



IS29. — Chimcrina corvuta Eschscholtz, Zool. Atlas, III (p. 2, pi. 12).— Dybowski, 

 Sitzb. Dorpat Natiirf. Ges., 1881, p. —.—Id., Orn. Centralbl., 1882, p. 28. 



l8■.^7. —Ccrorhina orientalis Brandt, Bull. Scientif., II, 1837, p. 348. 



1849.— Alca monoceros Temm. & Schleg., Faun. Japon. Av. (p. 140). 



1858.— Cerorhina snckleyi Cassin, in Baird's B. N. Am., p. 906. 



