20 BIRDS OF LA PLATA 
numbering no fewer than a hundred. In Argentina 
only four species are found, the two described and 
the Black-headed Reed-Wren, Donacobius atricapillus, 
a common Brazilian species, and the Eared Wren, 
Troglodytes auricularis, found in the province of 
Tucuman. 
CACHILA PIPIT 
Anthus correndera 
Above pale sandy buff, with black centres to the feathers; wing- 
and tail-feathers dark brown, edged with buff; the outer tail-feathers 
almost entirely white; below sandy buff with large triangular black 
spots; length 6 inches. 
Azara’s only reason for calling this bird La Corren- 
dera was that he thought it resembled a Titlark 
known by that name in his own country, but of which 
he merely had a confused recollection. It is therefore 
to be regretted, I think, that correndera has been 
adopted as a specific name by naturalists instead of 
Cachila, the vernacular name of the bird, familiar 
to every one in the Argentine country. Azara’s 
Spanish bird was probably Anthus pratensis, which 
closely resembles A. correndera in general appearance, 
and has, moreover, as wide a range in the northern 
as the last-named species has in the southern hemi- 
sphere. In the volume on Birds in the Voyage of 
the Beagle it is said that a species of Anthus ranges 
further south than any other land-bird, being the 
