188 Mr. H. Durnford on the Birds of 
6. Cistothorus platensis (Lath.); Scl. et Salv. P. Z. S. 
1869, p. 158. 
On the 26th of April last I found several of these birds 
near Lujan bridge amongst the thick tufts of “ Paja” grass, 
which there grows in about a foot of water. These it is very 
unwilling to leave, and, when flushed, only flies a few yards, 
being very anxious to seek the shelter of another tuft. On 
alighting it clings to a stout blade of grass, thence creeping, 
mouse-like, into the thickest part. In its mode of flight it 
resembles Troglodytes furvus, but frequents damper places 
than that bird. In the same marsh where I found it I shot 
Bynallaocis maluroides and S. sulphur if era. Its food consists 
of small insects chiefly Coleoptera. Legs, feet, and claws 
light brown tinged with slate-colour, undersides lightest. 
Iris wood-brown. 
7. Anthus correndera (Vieill.); Scl. et Salv. P. Z. S. 
1868, p. 139. 
Resident, found everywhere, and very common. Abun¬ 
dant up the Parana to Baradero. 
8. Parula pitiayumi (Vieill.); Scl. et Salv. P. Z. S. 1869, 
p. 631. 
I have nothing to add to my former note (Ibis, 1876, p. 
158). The only specimen I have ever seen was one I killed 
on the 29th October 1875. Decidedly rare here. 
9. Progne purpurea (Linn.); Scl. P. Z. S. 1872, p. 605. 
The dates of arrival and departure of this bird are about 
the same as those of P. tapera. The young are on the wing 
early in February. Common both in the town and country, 
breeding freely in chinks in walls, under the eaves of houses, 
and holes in trees. Preeminently a homely bird. During 
the summer its loud harsh notes, uttered whilst on the wing, 
may be constantly heard; but when resting on a telegraph- 
wire or twig of a tree it has quite a pretty little song. 
10. Progne tapera (Linn.); Scl. P. Z. S. 1872, p. 606. 
Arrives in September, leaving about the first week in April. 
It is a noisy, garrulous bird, and has a peculiar habit of rais- 
