200 Mr. O. V. Aplin on the 



99. Chauna chavaria. Crested Screamer. 



The only example I sa\v alive was one at a pulperia near 

 the Paso de Navarro over the Rio Negro_, which had been 

 caught young near there and was very tame. It repeated 

 its own name " Chaja/^ and also made a strange, rumbling, 

 hollow, internal sound. It is undoubtedly rare, but Mr. 

 Burgess some years since caught a young bird in that 

 district, and he tells me also of one shot on the Monzon 

 some time ago. 



100. Cygnus nigricollis. Black-necked Swan. 



Mr. Burgess has seen this fine bird in winter on a big 

 laguna near the Estancia Sta. Adelaida. About the 21st April 

 two were shot at the Estancia Miguelette, in Colonia. 



■^CoscoROBA CANDIDA. Coscoroba Swan. 

 One in the Museum was shot at the barra of the Santa 

 Lucia river. 



*Dendrocygna fulva. Fulvous Tree-Duck. 

 Specimen in the Museum. 



I 101. QuERQUEDULA cYANOPTERA. Bluc-wiuged Tcal. 

 I saw portions of specimens shot on the Monzon at Las 

 Coronas ; it is said to be not uncommon. 



102. QuERQUEDULA FLAViRosTRis. Ycllow-billed Teal. 

 The commonest Teal. I met with them, generally in pairs, 



at various dates from the 22nd October to May, but saw no 

 young broods. They were excellent eating in autumn. 



103. QuERQUEDULA VERSICOLOR. Grey Teal. 



Did not put in an appearance until April, and I saw it 

 on a few subsequent occasions ; once they were with Shovel- 

 lers, at another time a bunch of five were by themselves, and 

 at another (a sunny autumn afternoon) we stopped our 

 horses to admire a lovely laguna in which the trees, with 

 which the opposite bank was heavily wooded, were clearly 

 reflected, the smooth water being broken only by patches of 

 broad-leaved water-plants and the rippling track of a very 

 tame Grey Teal, while a Cocoi Heron, which had been 

 perched on a dead branch, flapped slowly down the river. 

 Such scenes do not readily fade from the memory. 



i 



