114 CRUISE OF STEAMER OORWIN IN THE ARCTIC OOEAN. 



PODICIPLD^. GREBES. 

 PODICEPS POLBOLLI Reinb. 



(171.) Ameeican Red-necked Grebe. 



These Grebes are quite numerous, occurriug along the entire American coast of Bering Sea, 

 and breeding txom the Peninsula of Aliaska to the vicinity of the Straits. They are most 

 numerous, however, in autumn, when they are found frequenting the sea; and some years from 

 ten to a dozen specimens may be secured, while in others but one or two will be seen. It is 

 unknown from the islands and the Asiatic shore of this sea, and the only portion of the Arctic 

 coast of which I have proof of its occurrence is in Kotzebue Sound, where it also nests in summer. 



DYTESAURITUS (Linn.) Ridgw. 



(172.) Horned Grebe. 



Like the preceding, this bird is found all along the maiulaud shore of this sea, where, however, 



it breeds very sparingly, being mainly an inland species. It is found quite frequently in the 



interior, where it nests and visits the sea-coast during the autumnal migration. It is also found 



on the shore of Kotzebue Sound, but is not known from the islands of this sea nor the Asiatic coast. 



COLYMBIDJE. LOONS. 

 COLYMBUS TORQTJATUS Briinn. 



(173.) The Loon. 



This bird is found along the Bering Sea coast, on both sides, and also upon the shore of the 

 Arctic, breeding wherever found. It is not abundant in this region, neither is it rare. There is 

 no record of its occurrence u[)Oii any of the islands of this sea, although, as noted, it occurs on 

 both shores. 



COLYMBUS ADAMSI Gray. 



(174.) Great White-billed Loon. 



This bird, the largest of the Loons, has a circumpolar distribution, although it is not known 

 to occur in abundance at any locality. It is found breeding about Kotzebue Sound, whence the 

 natives brought me several specimens, and reported the bird to be rather common there in summer. 

 I secured a young bird at Saint Michael's in autumn, and it is known to occur ou the Asiatic 

 shore. There is no record of its presence about the Bering Sea Islands, but, like the other si^ecies 

 of Loons, it undoubtedly visits these islands, during the migrations at least. The diSiculty of 

 studying the birds which frequent the sea about these storm-beaten islands is apparent, and 

 accounts for the little progress which can be made in determining th« full number of species 

 which are found in their vicinity. 



COLYMBUS ARCTICUS Linn. 



(175.) Black-throated Loon. 



This bird is found everywhere along the shore of Bering Sea on the American coast, and is 

 very abundant, nesting along the shore from the Peninsula of Aliaska north to Kotzebue Sound. 

 It was also seen in Bering Strait the first of July, and noted on several occasions along the 

 Asiatic shore, where it also breeds. It has not been recorded from the islands of this sea, although 

 undoubtedly occurring there in the migrations. 



COLYMBUS PACIFICUS Lawr. 



(176.) Pacific Diter, 



This bird is very rare on the coast of Bering Sea. Among the large number of Black-throated 

 Loons secured by me, only one proves to belong to this bird, and the same proportion is found to 

 hold good with other collections which have been brought from that country. This specimen was 



