Capt. Sabine's Memoir on the Birds of Greenland, ^c. 555 



various parts ; but a young male which was killed in June exactly 

 resembled the female in colour, though much larger in size. A 

 specimen of a young male, which I obtained in June, had no ap- 

 pearance of change from the brown plumage, and certainly was 

 not a bird of that year; I have therefore formed an opinion on 

 this point different from that of Brunnich. The trachea of the 

 male is uniform in size, rather compressed; the tympanum is small 

 and flatly globose ; the branchife are of different sizes, the larger 

 one being dilated considerably in the centre. 



28. Anas Glacialis. Lotw-tailed Buck. 



A. Glacialis. Gmel. \. 529. Lath. Iiid. Orn. ii, 8G4. Temm. 558. — Anas Hyenialis. 

 Fabr.7\. MiiW. no. 123. Fami.Suec. 44 S,- 47. no. 133 {kma\e). Bruii. ms.75, 

 76, 77, 78, (?f 79.— Long-tailed Duck. Lalh. St/n. \\. 528 (male). 4 529 (female). 

 Br. Zool. ii. 26S. Arct. Zool. ii. 566'. Moiit. Diet. Supp. Sf App. Mil. Jm. 

 Orn. viii. 93 (male). ^' 96 (female). 



Immature. Anas Glacialis, var. y. Lath. Lid. Orn. ii. 865 (female). — Anas 

 Hyemalis. Gmel. i. 529. — Long-tailed Duck. Arct. Zool. ii. 566. 6; App. 76. 



As the Long-tailed Duck only winters in Europe, returning to 

 the arctic regions in the summer, the state of its plumage at the 

 time we were in Baffin's Bay is interesting. I obtained a speci- 

 men of a mature male on the 30th of June. Its winter dress has 

 been detailed by several of the authors referred to, but I believe 

 a description of its summer plumage will be new. The whole 

 under part of the neck and the breast is black, the appearance of 

 the black spot so conspicuous in winter being removed by the 

 general diffusion of the dark feathers ; the sides of the head and 

 a little beyond the eye are a brownish white; round the eye 

 are some white feathers; from the bill a black line runs on the 

 top of the head to the crown, which is black; the back of the 

 neck is chiefly black, but at a small distance below the crown a 

 fevr white feathers are intermingled with the black ones across 



VOL. XII. 4 c the 



