98 



ORNITHOLOGICAL EXPLORATIONS. 



Tscbornij Mys, together with 0. furcata. I was not so fortunate, how- 

 ev^er, as to obtain any specimen during my stay there, but the occur- 

 rence of the species is beyond doubt. 



31. Oceanodroma furcata (Gmel.). 



1788. — Procellaria furcata Gmel., Syst. Nat., I, p. 561. — Kittl., Denkw., II, p. 319 

 (1858).— SCHLEG., Mus. P. B. Procell., p. 3 (1863).— Blakist, & Pryer, 

 Ibis, 1878, p. 218.— lid., Tr. As. Soc. Jap., VIII, 1880, p. 191.— lid., ibid.,X, 

 1882, p. 106.— Blakist., Amend. List B. Jap., p. 35 (1834).— Seeb., Ibis, 1884, 

 p. 33. — ThaJassidroma f. Gould, Zool. Sulphur., p. 50, pi. xxxiii (1844). — 

 FiNSCn, Abh. Biem. Ver., Ill, 1872, p. 83.— D all, Avif. Aleut. Isl., Uual. 

 . eastw., p. 7 (1873).— 7rf., Avif. Aleut. Isl. west Uual., p. 9 (1874).— Oceano- 

 dromaf. Nelson, Cruise Corwiu, p. 113(1883).— Stejneger, Natureu, 1884, 

 p. 55.— Turner, Auk, 1885, p. 158. 



1826. — Procellaria orientaJis Pall., Zoogr. Ross. As., II, p. 315. 



List of sjyeciineris collected. 



Locality. 



Copper Island 

 Bering Island. 

 Copper Island. 



— , 1882 



June 7,1883 

 July 12, 1883 

 .do I July 18, 1883 



cf ad. 

 cf ad. 

 ? ad. 



220 

 232 

 235 



mm. 

 161 

 156 

 159 

 164 



mm. 

 97 

 97 



mm. 

 15 

 16 

 15 

 10 



m,m,. 

 28 



27 

 27 

 26 



S 



mm. 

 28 

 29 

 29 



^o. 92914. — Found dead on the beach. BiR and feet black. Extremely emaciated. Testes very 

 small, undeveloped. 

 No. 92915.— Iii.s dark hazel. Bill and feet black. 

 No. 92913.— Iris dark hazel. Bill and feet black. 



The Fork-tailed Petrel breeds on Copper Island, where it is known 

 by the natives as the " Sturmof ka," I do not know of its breeding at 

 any place on Bering Island. On July 12, 1883, 1 visited the precipitous 

 rocks of Tschornij Mys, between KarabelniJ and Glinka, on the eastern 

 side of Copper Island, where a small colony of these graceful petrels 

 were breeding. The eggs, a single one in each nest, were deposited iu 

 deep holes in the steep basaltic rocks, 3 feet or more deep, and it was 

 only with great difficulty that a few could be secured. The birds were 

 taken on the nests, and in some the females, in others, the males were 

 sitting. 



The eggs, which were in different stages of incubation, are white with- 

 out gloss; No. 21786 has plenty of the minutest dark specks evenly 

 dusted over the blunt end; in No. 21785 these specks are a little larger, 



