65 
the Province of Buenos Ayres. 
grey. Beak dark olive^ tip ligliter_, and under mandible lighter 
than tip. Legs^ feet_, and claws olive. I imagine these chicks 
to have been about eight days old. 
34. Spatula platalea (Vieill.); Nomencl. p. 130. 
Partially resident and common. Perhaps the easiest Duck 
to approach^ and considered of little value for the table. 
Generally distributed. This bird was accidentally omitted 
from my last communication. 
35. Metopiana peposaca (Vieill.); Ibis^ 1877^ p. 192. 
The day before Christmas day of last year, whilst working 
through an extensive reed-bed, about fifteen miles to the north¬ 
west of Buenos Ayres, I found a nest of this bird, from which 
I flushed the female. It was made of dead rushes, warmly 
lined with down, and placed about six inches above the water. 
The eggs were ten in number, of the usual Duck^s-egg colour, 
and measure 2*350 x 1*7 inch. 
From all I can learn in this country, Dafila spinicauda, 
Mareca sihilatrioc, Querquedula versicolor, and Querquedula 
flavirostris, all nest on the ground, generally under a clump 
of thistles, whilst Metopiana peposaca nests in reed-beds and 
similar places, and builds its nest just abov^ the water. 
36. CoLUMBA PiCAzuRo, Tcmm.; Nomencl. p. 132. 
My Columba maculosa (Ibis, 1877, p. 193) should doubtless 
be C. picazuro, as suggested by the Editors in a footnote. 
37. Ballus maculatus, Bodd.; Nomencl. p. 139. 
A single bird was taken in a field of clover whilst mowing 
was going on at Eivadavia, on the banks of the Plata, and 
about seven miles N.W. of Buenos Ayres. It lived for some 
time in confinement, but was at last eaten by rats. 
[No specimen is sent; but it would appear that this is the 
bird intended.—Enn.] 
38. Rallus rythirhynchus, Vieill.: Nomencl. p. 139. 
My last communication contained a* notice of a nest and 
eggs under the head of R.ni^icans (Ibis, 1877, p. 193); but 
SER. IV.-VOL. II. p 
