the Province of Buenos Ayres. 61 



16. Myiarchus tyrannulus (Miill.) ; Nomencl. p. 52. 

 Not uncommon at Punta Lara, and nesting, though ray 



search for the nest was unsuccessful. In its habits it re- 

 sembles the other Tyrannidse 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. 



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. 



19. Synallaxis sulphurifera, 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. 



20. Synallaxis maluroides, D^Orb. ; 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. 



