VI 



~ , „ Date of 



Genera and Species. publication. 



151. Clangula 1880 



439. Clangula albeola 1877 



440. Clangula glaucion 1875 



441. Clangula islandica 1878 



152. Cosmonetta 1880 



442. Cosmonetta histrionica 1877 



153. Haeelda 1880 



443. Harelda glacialis 1875 



154. Somateria 1880 



444. Somateria mollissima 1871 



445. Somateria spectabilis 1877 



446. Somateria stelleri 1871 



155. CEdemia ]880 



447. CEdemia fusca 1877 



448. CEdemia nigra 1877 



449. CEdemia perspicillata 1877 



156. Erismatura 1880 



450. Erismatura leucoeephala .... 1878 



157. Mergus 1880 



451. Mergus merganser 1875 



452. Mergus serrator 1874 



453. Mergus albellus 1874 



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