1920.] Cape San Antonio, Buenos Ayres. 7 



previous occurrence during all my residence in tlie dis- 

 trict), and I therefore take the opportunity of transcribing 

 Claude Grant's remarks: "This Goose (C rubidiceps) had 

 not been seen in the Ajo district for many years until 

 the winter of 1909. A good many made their appearance 

 in the middle of May, and several hundreds had arrived 

 before I left in the middle of June. I was afterwards 

 informed by Miss Runnacles ' that in company with 

 Chloephaga poliocephala they came in their thousands and 

 literally covered the camp, being most unwelcome visitors, 

 as the drought had caused a scarcity of grass and these flocks 

 of Geese had helped to eat what was left; they began to 

 thin out towards the end of July and by the middle of 

 August hardly one remained.' " It was my misfortune 

 to be absent from the locality in this interesting year. 



337. Bernicla poliocephala Gray. Ashy-headed Goose. 

 See former notes under the name of Chloephaga polio^ 



cephala. 



338. Cygnus nigricollis Gm. Black-necked Swan. 



The habits of the Black-necked Swan were very fully 

 dealt Avith in my former paper, and consequently I have but 

 few remarks to offer at present. 



From my diary I gather one instance where a peon rode 

 down and secured an individual in shallow water as illus- 

 trative of the difficulty these heavy birds have in rising — 

 flapping along the surface for a considerable distance. 



Another entry refers to a shooting incident at the Laguna 

 Milan : Standing in the laguna near some rushes a pair of 

 Swans came over me from behind, one of which I shot. 

 Immediately following the report of the gun and the 

 resounding splash of the great bird, the shallow water all 

 round me was broken by innumerable furrows running in 

 every direction. Recovering from my surprise, I emptied the 

 second barrel at one of these and killed a large " Liza," or 

 Grey Mullet ! It would appear that a shoal of these fish had 

 come up one of the cangrejales (as they frequently do with 



