628 MR. E. W. WHITE ON BIRDS [Juiie 20, 



side. The clutch consists of three eggs ; and a remarkable circum- 

 stance in connexion with them is, that when they become heavy with 

 young all their points are directed inwards to a common centre. 



The eggs, of a very elongated pear-shaped form, hare a ground of 

 a warm stone-colour, sprinkled over with jet-black spots, which 

 cluster somewhat thickly round the blunt end. 



Meas. : axis 50 mill., diam. 36 mill. 



The eggs form a favourite dish with the natives, and are very 

 delicate. 



190. Charadrius virginicus, Borkh. 



5 . Puuta Lara, Buenos Aires, Arg. Rep., Feb. 22, 1881. 



Iris dark. 



Common in the province of Buenos Aires. 



191. .Sgialitis coLLARis (Vieill.). 



2 . Punta Lara, Buenos Aires, Arg. Rep., Feb. 18, 1881. 



Iris sepia. 



This bird seems rather rare. 



192. HiMANTOPus BRASiLiENSis, Brehm. 



2 . Punta Lara, Buenos Aires, Arg. Rep,, Feb. 23, 1881. 



Iris crimson. 



Met witli in flocks abundantly about the lagoons of Buenos Aires. 



193. Gambetta melanoleuca (Gm.), 



<S . Pacheco, Buenos Aires, Arg. Rep., March 15, 1881. 

 Shot in the extensive swamps here. 



194. Rhynchops NIGRA, Linn. 



$. Monte Grande, Buenos Aires, Arg. Rep., Feb. 4, 1882. 

 Iris brown. 



This bird is by no means common in Buenos Aires ; but a pair was 

 seen skimming along the surface of a lagoon at excessive speed. 



195. Sterna superciliaris, Vieill. 



2- Itapua, Misioues, Arg. Rep., July 18, 1881. 



Iris brown. 



Of these, three or four were observed wheeling about over the 

 river Saima, about a league up it from the Parana. They have a 

 sprawling, quick flight, settling now and again on the rocks on the 

 edge of the river. Dashing down and skimming the water, they 

 dip every now and again for fish, after which they rise high in 

 the air. 



196. Lartjs maculipennis, Licht. 



cJ . Punta Lara, Buenos Aires, Arg. Rep., Feb. 19, 1881. 

 $. Pacheco, Buenos Aires, Arg. Rep., March 16, 1881. 

 $. Salto, Buenos Aires, Arg. Rep., Oct. 17, 1881. 

 Iris dark brown. 



