186 SCOLOPACIDJ5: 



it common " in flocks " near Buenos Ayres, and again in the valley of 

 the Sengel river in Central Patagonia in winter. White and Hudson 

 also obtained specimens near Buenos Ayres, and Barrows in Entrerios 

 near Concepcion. 



402. CALIDEIS ARENABIA (Linn.). 

 (SANDERLING.) 



Calidris arenaria, Scl. et Salv. Nomencl. p. 145 ; Durnford, Ibis, 1878, p. 404 

 (Tombo Point) ; Baird, Brew., et Ridgw. Water-B. N. A. i. p. 249 j Saunders, 

 YarreWs Birds, iii. p. 420. Tringa arenaria, Seebohm, Plows, p. 431 . 



Description. No hind toe. Above in summer light rufous, in winter light 

 greyish, spotted and striped with blackish and edg'ed with whitish : beneath white ; 

 bill and feet black : whole length 7*5 inches, wing 5*5, tail 2'2. Female 

 similar. 



Hab. Arctic regions of both hemispheres, descending far south in 

 winter. 



The Sanderling is one of the most widely spread of all the Arctic 

 Grallse during its winter migration. Durnford obtained examples at 

 Tombo Point, Central Patagonia, on the 30th December, 1877, so that 

 it must necessarily pass through the Argentine Republic. It is only 

 known to breed in the high Northern Polar lands. 



403. TOTANUS MELANOLEUCUS (Gm.). 

 (GREATER YELLOWSHANK.) 



Totanus melanoleucus, Burm. La- Plata Reise, ii. p. 503; Baird, Brew., et 

 Ridgw. Water-B. N. A. i. p. 269 ; Seebohm, Plovers, p. 363 ; Barroivs, Auk, 

 1884, p. 315 (Entrerios). Gambetta melanoleuca, Scl. et Salv. Nomencl. 

 p. 145; iid. P. Z. S. 1868, p. 144 (Buenos Ayres); Durnford, Ibis, 1877, 

 p. 199 (Buenos Ayres) ; Withington, Ibis, 1888, p. 472 (Lomas de Zamora). 

 Totanus chilensis, Philippi, Wiegm. Arch. 1857, pt. i. p. 264 (Chili). 



Description. Above brownish grey spotted with white ; rump nearly white : 

 beneath white ; throat and neck with black streaks ; bill black ; feet yellow : 

 whole length 14-0 inches, wing 7*5, tail 3'4. Female similar. 



Hab. North and South America. 



The Greater Yellowshank is best known as an Arctic American 

 species, descending south during migration, and arriving in La Plata at 

 the end of September or early in October, singly or in pairs, and some- 

 times in small flocks. Without ever being abundant the bird is quite 

 common, and one can seldom approach a pool or marsh on the pampas 



