368 DR. HERMANN BURMEISTER ON THE [Mar. 5, 



some years ago, in both sexes, from the river Parana, near Las 

 Conchas, where the bird lives on the numerous brandies of the river 

 between the flat islands of its delta. I have never seen specimens 

 in the market of Buenos Ayres, where the two former species of 

 Querquedula are very common, and sold every day during winter 

 (from May to September). Azara has described the sexes of 

 Q. torquata under different names. 



17. Querquedula brasiliensis (Briss.) ; Burm. Reise, ii. 

 p. 517. 



Ipecutiri, Azara, Apunt. hi. p. 445. 



Also a very common bird in the interior and northern provinces. 

 Very numerous near Parana, Santa Fe, and Tucuman, and likewise 

 in Paraguay and the Brazils, where this Duck is the most common 

 of all species. Rare in the vicinity of Buenos Ayres, and very 

 seldom brought into the market. 



9. Pterocyanea. 



18. Pterocyanea cyanoptera (Vieill.) ; Burm. Reise, ii. 

 p. 514. 



Common in all the southern provinces from Buenos Ayres to 

 Mendoza ; rarer in the north to Parana and Santa Fe. 



10. Spatula. 



19. Spatula platalea (Vieill.) ; Burm. I. c. p. 517. 



Only in the eastern districts of the Republic, from Buenos Ayres 

 on the river to Paraguay, and not rare. 



11. Mareca. 



20. Mareca chiloensis, King; Burm. Reise, ii. p. 517. 



On both sides of the Cordilleras, and likewise common on the 

 plains of Patagonia and up to Buenos Ayres, where this Duck may 

 be found every day in the market during the winter. Not abundant 

 in the northern parts of the country, and never seen on the river 

 near Parana. 



12. Metopiana. 



21. Metopiana peposaca (Vieill.); Burm. Reise, ii. p. 518; 

 Sclater, Proc. Zool. Soc. 1870, p. 666, pi. 37. 



Likewise on both sides of the Cordilleras, and common throughout 

 the whole of Patagonia to Buenos Ayres and Parana^ where I have 

 observed this Duck in large flocks on the lagunes near the river. 



13. Erismatura. 



22. Erismatura ferruginea, Eyton ; Gay, Fauna Chilena, i. 

 p. 458. 



Anas cyanorhynchn, Licht. MS. 



