530 MR. p. L. SCLATER ON THE [JunC 15, 



Genus Erismatura. 



3. Erismatura leucocephala (Scop.). "White-headed Diviug- 

 Duck. 



Erismatura leucocephala, Gould, B. Eur. vii. t. 383. 

 Hah. S.E. Europe. 



4. Erismatura mocoa. Smith. Mocoa Diving-Duck. 

 Erismatura mocoa, Smith, 111. S. Afr. Zool., Aves, tt. 108, 109. 

 Hab. Lakes of South Africa. 



5. Erismatura rubida (Wils.). Ruddy Diving-Duck. 

 Erismatura rubida, Scl. et Salv. P. Z. S. 1876, p. 403. 

 Hab. North and Central America. 



6. Erismatura australis (Gould). Blue-hilled Diving-Duck. 

 Erismatura australis, Gould, B. Austr. vii. t. 17. 



Hab. Australia. 



7. Erismatura ferruginea, Eyton. Ferruginous Diving-Duck. 

 Erismatura ferruginea, Scl. et Salv. P. Z. S. 1876, p. 404. 



Hab. Antarctic America. 



8. Erismatura dominica (Linn.). Dominican Diving-Duck. 

 Erismatura dominica, Scl. et Salv. P. Z. S. 1876, p. 405. 

 Hab. West Lidies and Central and South America. 



Genus Nesonetta. 



9. Nesonetta aucklandica, G. R. Gray. Auckland-Islands 

 Diving-Duck. 



Nesonetta aucllandica, G. R. Gray, Voy. Erebus & Terr., Birds, 

 p. 31, t. svii. 



Hab. Auckland Islands. 



I. Suhfam. VIII. MERGANETTIN^. 



The Torrent-Ducks of the Andes of South America are allied to 

 the Lake-Ducks and to the Mergansers, but seem to be most naturally 

 arranged as a separate family. 



None of the three known species have yet been introduced into 

 living collections. 



1. Merganetta armata, Gould. Chilian Torrent-Duck. 

 Merganetta armata, Scl. et Salv. P. Z. S. 1876, p. 406. 

 Hab. Rivers of the Andes of Chili. 



