Paragvay, Bolivia^ and Southern Brn~iJ. 345 



This is a very common species in the Ajo district and 

 frequents all the open waters and the sea-coast. 



In November 1908, on the Laguna de Milan, many of 

 these birds were seen unable to fly, and on being chased half 

 swam and half flopped over the surface of the water to take 

 refuge in the dense reed-beds. 



214. Dendrocygna fulva. 



Dendrocygna falva Arg. Orn. ii. p. 12G ; Salvad. Cat. B. 

 xxvii. p. 149. 



a. ^ ad. Villa Pilar, Paraguay. 



Irides brown; bill slate-coloured, darker at tip; legs 

 and toes slate-coloured. 



215. Cairina moschata. 



Cairina moschata Arg. Orn. ii. p. 129; Salvad. Cat. B. 

 xxvii. p. 51. 



a, b. ? iram. & ad. Pan de Azucar, Brazil. Sept. 18-19, 

 1909. 



Commonly observed in Northern Paraguay and Brazil, 

 especially near Puerto Maria, in flocks of upwards of forty 

 individuals. 



216. Heteronetta atricapilla. 

 Heteronetta melanocephala Arg. Orn. ii. p. 130. 

 Heteronella atricapilla Salvad. Cat. B. xxvii. p. 325. 

 a,b.S^ ad. Los Ynglases, Ajo. Oct. 3, 1908. 

 c. ? ad. „ „ Oct. 27, 1908. 



This is by no means a common Duck in the Ajo district : 

 it frequents singly or in pairs open sheets of water in the 

 larger reed-beds ; it swims rather low in the water and 

 reluctantly takes to flight. 



217. QUERQUEUULA CYANOPTERA. 



Querquedula cyanoptera Arg. Orn. ii. p. 130; Salvad. Cat. 

 B. xxvii. p. 303. 



a, b. ^ ^ . Los Ynglases, Ajo. May 9, 1909. 

 (^ . Irides pale yellow ; bill black ; legs and toes pale 

 yellow. 



? . Irides brown ; bill black faintly mottled with grey, 

 lower mandible mottled with pale flesh-coluur ; legs and 

 toes pale brown. 



