410 WHITE MERGANSER. 



black, but of a less deep tint; the hind part of the back becomes tinged with 

 grey, and the rump and tail-feathers are dusky grey. The sides of the body 

 and rump are white, finely undulated with blackish-grey. 



Length to end of tail 17^ inches, to end of claws I85, to end of wings 

 15^; extent of wings 27; bill along the ridge 1||, along the edge of lower 

 mandible 1||; wing from flexure 7f ; tail 3^-; tarsus l|f; first toe ^, its claw 

 T 2 ¥ ; second toe 1^-, its claw -^\ third toe \\\, its claw y|; fourth toe 1 j-£, its 

 claw T 3 2- Weight 1 lb. 8 oz. 



Adult Female. 



The female is much smaller. The feathers of the hind part of the head 

 and neck are also elongated so as to form a crest. The bill, iris, and feet, 

 are coloured as in the male. All the lower parts are white, excepting a 

 broad band of light grey across the middle of the neck, and a narrow portion 

 of the sides, which are of a deeper tint. There is a patch of brownish-black 

 on the lore and beneath the eye; the upper part of the head and half of the 

 hind neck are light reddish-brown; the rest of the hind neck, and all the 

 upper parts, bluish-grey, darker behind, and in the middle of the back 

 approaching to black. The wings as in the male, that is black, with a large 

 patch of white, and two narrow transverse bands of the same; the tail dusky 

 grey. 



Length to end of tail \S\ inches, to end of claws 16^, to end of wings 14^; 

 extent of wings 25. Weight 1 lb. 4 oz. 



