346 NATATORES. 



the belly, are brown, and the vent feathers black. The sides 

 are white, the marginal parts delicately mottled with brown. 

 The back is brownish ash, with two crescent-shaped white 

 spots on the scapulars, which nearly meet. The basis of the 

 quills and the wing spot are also white. The rump and 

 upper tail coverts are green, with purple reflections. 



The female has no crest. The upper part of the head 

 and back are generally brown, the cheeks ash colour, the 

 scapulars and wing spot white, the bill, tarsi, and toes, 

 brownish.* 



THE LONG-TAILED HARELD (Harelda glaciolis). 



This species is not uncommon upon the shores of the 

 northern parts of both continents, retiring to the most nor- 

 therly places that will afford it grass or other cover near the 

 sea in the breeding season, and migrating into warmer lati- 

 tudes in the winter. Considerable flocks appear on the 

 shores of the northern isles from October to April ; but few 

 appear to the southward, and they disappear from even the 

 extreme north of Britain in the summer. They live chiefly 

 upon the smaller Crustacea and shelled mollusca, which they 

 procure by diving. They have a loud clangulous cry, con- 

 sisting of three or four harsh notes. Length twenty-two 

 inches, breadth thirty-six. Bill black, with an orange line in 



* A new pochard was introduced to science by Mr. Bartlett, in 1847 

 (in " Zool. Proceeds./' p. 48), under the name of Paget's Pochard, Full- 

 gula ferinoldeb. "This bird," says Mr. Bartlett, "may be readily dis- 

 tinguished from the common pochard, which it most resembles, by its 

 mallflf si/.e, darker colouring, the conspicuous ivhite speculum on the wing, 

 and the straw -colour of the eyes. The female is unknown; -but I pre- 

 sume it will much resemble the female of the pochard, and will doubtless 

 possess the white speculum on the wings." The individual from which 

 Mr. Bartlett took his description was killed near Yarmouth, and \vas 

 probably a straggler, accidentally stranded on our shores. It barely 

 comes within the list of British birds. For a full account, we refer to 

 the " Zool. Proceeds., 1847." M. 



