61 
the Province of Buenos Ayres. 
^ j 16. Myiarchus tyrannulus (Miill.); Nomencl. p. 52. 
Not uncomnion at Punta Lara, and nesting, thougli my 
search for the nest was unsuccessful. In its habits it re¬ 
sembles the other Tyrannidae here, perching on the topmost 
' twig of a tree, whence it gets a good view on all sides, and 
is well situated for catching passing insects. Iris dark 
brown; legs, feet, and claws black; upper mandible black, 
under mandible dark horn-colour. 
17. Pachyrhamphus polychropterus (Vieill.); Nomencl. 
p. 56. 
The only occasion I have observed this bird was on the 
28th January 1877, when I met with a pair in the riverain 
wood close to Belgrano. They were busy catching flies, 
making frequent sallies from a willow tree in pursuit of them. 
They have a loud whistling note. I was only able to shoot 
the male. 
J 18. Synallaxis albescens, Temm.; Ibis, 1877, p. 180. 
The nest of this Synallaxis is a large circular structure of 
sticks, with the aperture on one side, and the twigs around it 
project slightly beyond the rest of the nest. It is lined with 
hair and a few feathers, and placed in a bush from four to 
eight feet from the ground. The eggs are nearly white, 
having a faint greenish tinge. 
— I — 19. Synallaxis sulphuripera, Burm. ; Ibis, 1877, p. 180. 
On the 10th November 1876 I found the nest of this bird 
in the riverain wood at Belgrano. It was situated in a dense 
bed of reeds and scrub, and placed on the top of an old willow- 
stump about five feet from the ground. It was domed and 
circular in shape, with the aperture in one side, and formed 
of reeds, warmly lined with hair and feathers. There were 
two eggs, quite white in colour. 
— I 20. Synallaxis maluroides, D^Orh. j Ibis, 1877, p. 180. 
This bird nests in the centre of the thick tufts of paja grass 
growing in water, from which the nest is only a few inches 
distant. It makes a very slight open structure of grass, lined 
with a few feathers and a little wool. Eggs quite white. 
