404 
Scientific Proceedings, Roy! Dublin Socvety. 
Cotympip®—continued. 
America. 
Colymbus arcticus.* Linn. 
Hudson’s Bay and the Atlantic Coast, 
perhaps as far south as the United 
States. (Baird, Cassin, and Lawrence. ) 
Colymbus septentrionalis.* Linn. 
Atlantic Coast from the Arctic Seas as 
far south as Maryland in winter. Found 
also on the Pacific Coast. (Baird, 
Cassin, and Lawrence.) 
Breeds in Greenland. (Neston.) 
Europe. 
Colymbus arcticus.* Linn, (Black-throated 
Diver.) 
Northern Europe, Scotland, occasionally 
further south in the British Isles, 
visiting the coasts of Germany and 
Holland. Has occurred in Portugal 
and Northern Italy, though not reported 
from Spain. 
Siberia and East to Japan. (Dresser.) 
Colymbus septentrionalis.* Linn. (Red- 
throated Diver.) 
Northern Europe and Asia ; British Isles 
in winter; and straggling as far south 
as North Africa. Along the coast and 
fresh-water lakes of China. (Dresser.) 
PopICcIPID®. 
Podiceps griseigena.* Bodd. 
The fur countries, and the Atlantic states, 
south to Pennsylvania in winter. 
(Baird, Cassin, and Lawrence. ) 
Three have occurred in Greenland. 
(Newton.) These have been named 
P. holbélli, but are scarcely deserving 
of specific rank. 
St. Michael’s, Alaska. 
to Fort Yukon. 
Sitka. (Bischoff.) 
(Dall.) And up 
Podiceps auritus. 
A few have been obtained in Southern 
Greenland. (Newton.) 
Podiceps nigricollis var. californicus.* 
Heerm. 
This scarcely separable form has been 
named P. californicus. (Heerm, 
Proc, Phil. Acad., 1854, p. 179.) Mr. 
Dresser says it differs from P. nigri- 
collis in having the twelve outer quills 
black as well as the inner secondaries, 
whereas in the European bird the sixth 
quill is marked with white, each suc- 
ceeding one having more white, the 
short secondaries being pure white, 
Podiceps griscigena.* Bodd. (Red-necked 
Grebe.) 
A winter visitor to Britain. Mr. Dresser 
says: “ Itis doubtful if it occurs in 
Iceland; it is resident but not common 
in Scandinavia, Archangel, Central 
Russia; breeds in South and South- 
Eastern Russia, where it is common.” 
(Mr. Sabanieff.) Breeds in North 
Germany and Denmark; occurs in 
passage in Belgium and France ; rare 
in Italy. Breeds in North-West 
Africa. 
A large-billed form extends over North 
America and Asia generally. Found 
in Siberia, Japan, throughout the 
Amoor country, Kamtchatka. 
Podiceps auritus.* Linn. (Eared Grebe. ) 
Mr. Yarrell says it is occasional in Eng- 
land, and rare in Scotland. Found in 
Iceland. (Faber.) Breeds, though 
rarely, in Sweden. (Nilsson.) Lapland. 
(Linn.) Russia, Germany; rare in 
Holland and France, but visits the 
lakes of Switzerland, Provence, and 
Italy ; rather common in the Adriatic. 
(Temm.) Trebizond. (Dickson and 
Ross.) Said to inhabit the Falkland 
I. ; Siberia. 
Podiceps nigricollis.* C. L. Brehm. (Eared 
Grebe. ) 
Mr. Dresser says this Grebe breeds in 
Southern Europe and North Africa, 
whereas P. auritus only nests in the 
far north. It is rare in most parts of 
Scandinavia. Common in Central and 
Southern Russia, but rare towards the 
north. Poland, numerous in passage, 
and a few breed. Breeds in North 
Western Jutland. Occurs in passage 
in Holland and Belgium, more nume- 
