16 



ORNITHOLOGICAL EXPLORATIONS. 



Orn. Faun. Vost. Sibir., p. 73 (1877).— Jd., Bull. Soo. Zool. France, 1877, p. 

 50.— Jd., ibid., 1882, p. 398.— Blakist. & Pryer, Ibis, 1878, p. 211.— lid., 

 Tr. As. Soc. Jap., VIII, 1880, p. 181.— /id., ibid., X, 1882, p. 94.— Nelson, 

 Cruise Corwin, p. 115 (1883).— Hartlaub, J. f. Orn., 1883, p. 284.— Blakist., 

 Amend. List B.Jap., p. 8 (1884). — Cepphtia s. Pallas, Zoogr. Ross. As., II, 

 p. 342 (1826).— Eudytes s. Normann, in Erman's Verzeichn. Thier. Pflanz., 

 p. 18 (1832). 



1774. — Colymbua glacialia Phipps, Voy, North Pole, p. — (neo Lin.). — Swinhoe, Ibia, 

 1860, J). 67.— Id., ibid., 1861, pp. 268, 345, 410. 



1783.— Colymbus immer BODD., Tabl. PI. Enl., p 58 (Ed. Teg.) (neo BRtJNN., 1764). 



1788. — Colymbus striatus Gmel., Syst. Nat., I, 2, p. 586. 



1810. — Colymbus rufogularis Mey. & Wolf, Taschb. Dentsch. Vogelk., II, p. 453. 



1&26.— Colymbus miilleri Brehm, Isis, 1826, p. 984. 



1831.— Colymbua atellaris Lesson, Trait6 d'Orn., p. 637. 



1855. — Colymbus microrhynohos Brehm, Naumannia, 1855, p. 300. 



List of specimens collected. 



No. 89118. — Iris reddish brown. Bill black, colmen yellowish gray, lighter towards the base. 

 No, 92917. — Iris dark hazel. Bill light bluish gray, culmen blackish. Feet bluish white ; outflr 

 aspect, webs along the toes, and joints blackish. 



The " Gagara^^ occurs very abundantly on Bering Island during the 

 summer. Even on very small ponds a breeding pair is regularly found, 

 and on the greater lakes several pairs take up their quarters, not in 

 company, however, but each pair by itself, occupying its own corner of 

 the lake. 



On Copper Island suitable localities are very scarce, but in a few 

 places they breed, nevertheless. Thus, on July 30, 1883, I found a pair 

 at Pestschanoj Ozero, a few miles from the village. 



They appear in spring rather late, as the first ones were observed 

 about the 1st of May, the bulk not arriving before the 7th (1883). 

 Fresh eggs were taken on June 2, 6, and 21. These measure as fol- 

 lows: 



