210 THE BIRDS OP BRITAIN, 



Pochard Section^ — (FuligtiUrus.) 



N Scoter (Oidemia, Stev.) 

 * Black Scoter Oidemia nigra, {Flem.) 



Velvet Scoter Oidemia fusca, {Flem.) 



Surf Scoter Oidemia perspicillata, {Flem.) 



Eider (Somateria, Leach.) 

 Downy Eider Somateria moUissima, {Leach.) 



King Eider Somateria spectabilis, {Leach.) 



Pochard, (Fuligula, Leach.) 

 Redheaded Pochard Fuligula ferina, {Stcv.) 



Rufous Pochard Fuligula rufina, {Stev.) 



Olive Pochard Fuligula nyroca, {Stev.) 



Scaup Pochard Fuligula marila, {Stev.) 



Tufted Pochard Fuligula cristata, {Stev.) 



Western Pochard Fuligula dispar, {Stev.) 



Hareld, (Harelda, Leach.) 

 Whiteheaded Hareld Harelda glacialis, {Leach.) 



Garrot, (Clangula, Flem.) 

 Goldeneyed Garrot Clangula bimaculata, ( W.) 



Harlequin Garrot Clangula histrionica, {Leach.) 



Merganser Section^ — {Mergince.) 

 Merganser (Mergus.) 

 Common Merganser Mergus variabilis, ( W.) 



Redbreasted Merganser Mergus serrator, {Lin.) 



Hooded Merganser Mergus cucuUatus, {Lin.) 



Pied Merganser Mergus albellus, {Lin.) 



Family II., Diver Family,— (CoLiMBiDiE.) 



Grebe, (Podiceps, Lath.) 

 Rednecked Grebe Podiceps rubicoUis, {Lath.) 



Tippet Grebe Podiceps cinereus, ( ^F.) 



Dusky Grebe Podiceps obscurus, {Lath.) 



Eared Grebe Podiceps auritus, {Lath.) 



River Grebe Podiceps fluviatilis, (FT.) 



Diver, (Colimbus, Lath.) 

 Northern Diver Colimbus glacialis, {Lin.) 



Blackthroated Diver Colimbus arcticus, {Lin.) 



Redthroated Diver Colimbus septentrionalis, {Lin.) 



Family III., Auk Family,— (ALCADiE.) 

 Guillemot, (Uria, Bris.) 

 Foolish Guillemot Uria atrata, ( W.) 



Black Guillemot Uria lacteola, {Lath.) 



