BIRDS OF ARGENTINA, PARAGUAY, URUGUAY, AND CHILE 167 



The species was not found west of these points and seems to be 

 restricted during the resting period to the better watered grass- 

 grown eastern pampa. 



The northward migration began with a flock of nine seen January 

 23, 1921, at a little fresh-water pool on the beach near La Paloma, 

 Uruguay; when flushed tliese passed on to the west. Single indi- 

 viduals were seen near San Vicente, Uruguay, in flight toward the 

 northwest on January 24 and 30. At Lazcano, Uruguay, birds in 

 passage north were seen in early morning on February 7 and 8, and 

 one was recorded February 18 at Rio Negro, Uruguay. On March 

 8 at Guamini, Buenos Aires, 15 'came in at dusk to roost on a little 

 mud bar in company with Hudsonian godwits. The migration 

 seemed almost at an end then, as later I saw only four at Tunuyan, 

 Mendoza, on March 23 ; and on April 5 only a few were heard call- 

 ing with other shore birds in flight northward over Tucuman, 

 Tucuman. 



An adult female shot September 6 had renewed part of the body 

 plumage but had the flight feathers still worn. Another, shot No- 

 vember 15, was nearly in winter plumage and had begun the molt 

 of the inner primaries. 



OREOPHOLUS RUFICOLLIS RUFICOLLIS (Wagler) 



Charadnus 7-uficollis Wagler, Isis, 1829, p. 653. (Canelones, Uruguay.) 



The spelling of the generic name for this plover as proposed by 

 Jardine and Selby ^^ is Oreopholus, as given above.^* Brabourne 

 and Chubb ^^ state that no type locality has been given for this 

 species and suggest Patagonia. In Wagler's original description, 

 however, is the statement "Habitat in America. {Canelonnes.) 

 {Miis. Berol. ),'''' which indicates Canelones, Uruguay, as the source 

 of his type. Uruguay has not been included usually in the range 

 of this species, but Oreopholus 7-uficollis was seen by Aplin^^ at 

 Santa Ana, and is recorded by Tremoleras^^ in Montevideo and 

 Canelones. 



On December 8, 1920, near Zapala, Neuquen, while traversing a 

 sandy area with a thin cover of low bushes my attention was at- 

 tracted by a low plaintive whistle, lohees tur tur. As I watched to 

 determine the source of the sound one of these plover ran forward 

 a few steps and then stopped to watch me quietly. In this bird, 

 an adult male, the tarsus was pinkish vinaceous, and the toes black. 



The subspecies O. r. simonsi Chubb from southwestern Peru, 

 Bolivia, and Tarapaca is a strongly marked race that differs from 



"111. Orn., vol. 3, December, 1835, pi. 151. 



=^ See Ridgway, Birds North and Middle America, vol. 8, 1919, p. G3. 



3= Birds South America, 1912. p. 38. 



^ Ibis, 1894, p. 207. 



3' El Hornero, vol. 2, no. 1, July, 1920, p. 13. 



