THE BLTJE-BILTjED DUCK 



153 



Sub-family Erismaturince. 

 Hind toe broadly lobed. Tail feathers narrow and very stiff. 



Genus Erismatura. 



Tail quills 18. 



Musk Duck; 



Technological Muaeuin, Sydney. 

 Biziura lobata. 



The Blue-billed Duck. 



Erismatura australis. 



Southern Australia and Tasmania. 



Head, throat and neck black; breast, back and flanks chestnut; rump 

 blackish, freckled with reddish lines; underparts brown, feathers tipped 

 with rufous-white; wings and tail dark brown; bill light blue. Total 

 length 16 inches, wing 6.2, tail 2.6, culmen 1.6, tarsus 1.2.5. Female brown, 

 upper parts freckled. 



