Mr. A. Newton o?i the Birds of Spitsbergen, 517 



a very large flock, consisting of hundreds of ducks and young 

 drakes, with only one or two old drakes among them all. They 

 do not appear to breed there. 



23. CoLYMBUs sEPTENTRiONALis (L.); Ross, p. 197; Torell, 

 p. 61 ; Malmgreu, 1863, p. Ill ; Id. 1864, p. 402. C. glaci- 

 alis, Phipps, p. 187; Scoresby, i. p. 533. 



Breeds as far as the Seven Islands, lat. 80° 45' N. Eggs 

 from the Depot Holm and other places have been obtained by 

 the Swedes. A young bird was found by our party on one of 

 the Thousand Islands ; and I saw a pair of old ones on Russo, 

 which had evidently a nest not far off. Thus it would seem 

 pretty generally, though sparingly, distributed throughout the 

 whole country. The Red-thi*oated Diver probably feeds its 

 young, according to Dr. Malmgren, on a species of Apus, which 

 he found in plenty in freshwater pools on the Stor Fjord. 



24. Cepphus mandti (Lichtenstein) . " Pigeon " or " Pigeon- 

 diver,'^ Marten, p. 79, tab. L. fig. b. Colymbus grylle, Phipps (nee 

 Linn.), p. 186; Scoresby, i. p. 532. " Grylle scapularis, Leach," 

 John Ross, Voy. Baffin's Bay (1819), App. 2. p. li ? (ex Groen- 

 landia). Uria mandtii, Licht. Verz. d. Doubletten, (1823) p. 88, 

 no. 926; Keyserling &Blasius, Wirbelth. Europ. (1840) p. xcii ; 

 Torell, p. 62. Uria glacialis, Brehm, Lehrb. (1824) pp. 924, 

 1008. Uria grylle, Ross, p. 197 ; G. R. Gray, List B. Brit. 

 Mus. (1844) pt. iii. p. 157 {partim) ; Evans and Sturge, 

 p. 169; Torell, p. 62 ; Malmgren, 1863, p. 111. Uria grylle v. 

 glacialis, Gaimard, Voy. en Scand. Atlas, livr. iv. pi. — ; Malm- 

 gren, 1864, p. 403. Uria grylle mandtii, '^(Me,g^,^€,w. Crit. (1844) 

 p. cvii. Cepphtis grylle, A. Newton, P. Z. S. 1864, p. 495. 



In 1823, as above cited, Lichtenstein described a new species 

 of Black Guillemot, in the following words : — " Uria Mandtii 

 affinis GryllcB ', differt potissimum remigibus secundariis multo 

 longioribus apice albis. Rostrum gracilius, cauda, tarsi, digiti, 

 pro mole longiores. Longit. 124" > " ^^^ refers for further par- 

 ticulars to Mandt's 'Dissertatio de itinere Groenlandico ' (p. 30), " 

 a work I have not been able to see. 



Now, though the keen eye of the Berlin Professor told him 

 that the specimen before him was distinct from the Colymbus 



