343 
Paraguay , Bolivia , and Southern Brazil. 
Twenty eggs of this Screamer were brought home, taken 
between September 11th and October 13th, 1909, at Ajo ; 
five, rarely six, being the complete clutch ; they are of a 
creamy white or pale bluish white, and measure: axis 3*2 
to 3’72 in., diam. 2T1 to 2’27. 
The nest-sites are in swamp and composed of reeds and 
bunco. 
Fam. AxATiDiE. 
210. Chloephaga poliocephala. 
Chloephaga poliocephala Salvad. Cat. B. xxvii. p. 137. 
Bernicla poliocephala Arg. Orn. ii. p. 124. 
This Goose is not represented in the collections made by 
me, but there is a male as well as a female in the collection 
of Miss Runnacles, taken on the 29th of June, 1909, at 
Los Ynglases, Ajo. 
The female is adult and is moulting, except the wings and 
tail, the old feathers shewing much signs of wear. 
The male is a young bird moulting, except for the wings 
and tail, into the adult dress. The old feathers on the 
chest and back are all the barred feathers of the young 
bird ; the wing lacks the glossy speculum, and a few barred 
feathers remain on the breast. 
The notes on this species are included in those on 
C. rubidiceps. 
211. Chloephaga rubidiceps. 
Chloephaga rubidiceps Scl. P. Z. S. 1860, p. 415, pi. clxxiii. 
a, b. $ . Laguna de Milan, Ajo. May 16, 1909. 
Irides dark brown ; bill black; legs and toes dark yellow 
and black. 
There are also two males in Miss Runnacles 5 collection, 
taken on the 29th of June in the same year ; one of which 
is moulting very slightly on the body. Two of these four 
birds have the cinnamon colour of the abdomen extending 
to the breast, and the heads are rich and dark in colour; 
these I take to be fully adult birds. The other two have 
the cinnamon colour only on the abdomen, and the heads 
