336 Mr. C. H. B. Grant on Birds collected in Argentina, 



Fam. Plotid.e. 



194. Plotus anhinga. 



Plotus anhimja Grant, Cat. B. xxvi. p. 419. 



a. $ ad. Tebicuari, Paragnay. Aug. 8, 1909. 



h. ? juv. Mortero, ,, Ang. 13, 1909. 



The adnlt is moulting on the under parts and tail. 



Ad. Irides brown ; orbit, lores, and bill pale yellowish ; 

 upper mandible horn-coloured ; legs and toes dirty yellow, 

 webs darker. 



Young. Irides yellow ; orbits and bill greenish yellow ; 

 legs and toes yellowish and sooty. 



The Darter was commonly observed on the Rio Paraguay, 

 and the further north we went the more plentiful it became ; 

 it was observed also on the llio Parana to the south o£ 

 Corrientes ; the last examples, three together on the 15th of 

 November, were seen a few miles below La Paz, Northern 

 Argentine. 



Fam. Ardeid.e. 



195. Ardea cocoi. 



Ardea cocoi Arg. Orn. ii. p. 93 ; Sharpe, Cat. B. xxvi. 

 p. 72. 



a. ? imm. Tuyu, Ajo. Feb. 12, 1909. In full moult. 



Irides pale yellow ; orbits and lores green, surrounded 

 with black ; bill and upper mandible black, lower pale 

 yellow, greenish at base ; legs and toes dull black, whitish 

 on tibia. 



19G. Ardea egretta. 



Ardea egretta Arg. Orn. ii. p. 98. 



Herodias egretta Sharpe, Cat. B, xxvi. p. 95. 



This species is not represented in the collections made by 

 me, but I have an adult female in breeding-dress from the 

 collection of Miss Runnacles, shot on November 8th, 1909, 

 at Los Ynglases, Aj6. 



Sparingly observed on the river expedition, and everywhere 

 very wild. 



