150 Mr. J. Graham Kerr on the Avifauna 



but the bird itself is rarely seen. Like Chung a burmeisieri, 

 this species is known to the provincial Argentines by the 

 name " Chuna.^' 



160. Parra jacana. {Op. cit. ii. p. 163.) 



Very abundant on every freshwater lagoon^ where it may 

 be seen in flocks, walking about and feeding on the floating 

 carpet of Pistia and other plants. When disturbed they fly 

 off" a short distance, their legs hanging down, and utter shrill 

 cries of " he-he-he." 



161. Vanellus cayennensis. {Op. cit. ii. p. 163.) 



The Teru-teru is not abundant in the interior of the Chaco, 

 probably owing to so much of the country being covered with 

 very long grass. It was got occasionally during autumn and 

 winter on the Pilcomayo. 



/ 162. ^GIALITIS COLLARIS. {Op. cit. ii. p. 173.) 



(No. 84, J^ ; 85, ? .) Near Fortin Donovan. May 1st, 

 1890. 



Found on the flat sandy margin of the salt lagoons, where 

 it runs about with great rapidity, when it pauses, bobbing 

 its head. The male I have heard utter an almost song-like 

 succession of clear, short, flute-like notes. When approached 

 very close it rises up suddenly into the air with extremely 

 rapid flight, mounting up and up until one loses sight of it. 

 The colour of the bird is exquisitely suited to its surroundings, 

 the brown of its back harmonizing perfectly with the sand, 

 and so making it almost invisible from above, while its white 

 underparts no doubt make it equally so from beneath the 

 water^s surface. 



It feeds upon small mollusks, insect-larvae, &c. 



163. HiMANTOPUS BRASILIENSIS. (Op. cit. U. p. 179.) 



(No. 163, S •) Fortin Page. August 5th, 1890. 

 Occasionally seen after the summer rains. 



164. Gallinago paraguai^. {Op. cit. ii. p. 181.) 



This Snipe was met with in considerable numbers by the 

 edges of freshwater marshes in the neighbourhood of Timbo, 

 on the Paraguay. On the Pilcomayo occasional individuals 



