191 
the Province of Buenos Ayres. 
city; and I observed it last year, when we had unusually severe 
weather, within thirty miles of Buenos Ayres; it rarely, 
however, comes as far north as this. 
98. Cygnus nigricollis (Gm.); Scl. et Salv. P. Z. S. 1868, 
p. 145. 
Winter visitor, but the time of its arrival and departure 
very uncertain, depending chiefly on the mildness or severity 
of the season. This has been a very mild winter, and com¬ 
paratively few Wildfowl have visited us. This time last year, 
22nd July, the market was well supplied with Swans and 
Ducks; but the gunners have had a bad time of it this year. 
Common at Baradero in April. 
99. Cygnus coscoroba (Mol.); Scl. et Salvin, P. Z. S. 1876, 
p. 371. 
Winter visitor, like the preceding; and, like that bird, few 
have come this year. 
100. Querquedula elavirostris (Vieill.); Scl. et Salv. 
P. Z. S. 1868, p. 146. 
A few breed here; but the majority of those obtained in 
the winter are visitors from the south. This and the follow¬ 
ing species have very much the habits of our little Teal at 
home—when flushed, following the course of the stream and 
dropping suddenly. Iris wood-brown. 
-f 101. Querquedula cyanoptera (Vieill.) ; Scl. et Salv. 
P. Z. S. 1869, p. 160. 
Pretty common in the winter, a few breeding here. Fre¬ 
quents the same situations as the two last-named species, 
small pools and watercourses, but not generally found in the 
large lagunas. Common at Baradero in April. Iris scarlet* 
with a tinge of carmine; legs and feet bright orange. 
-f- 102. Querquedula versicolor (Vieill.) ; Scl. et Salv. 
P. Z. S. 1868, p. 146. 
Very common, many breeding in the neighbourhood. Com¬ 
mon at Baradero in April. Flocks of this species do not mix 
with those of any other; but their flight and habits are similar 
to those of Q. flavirostris. Iris wood-brown. 
