CHERRIE: ORNITHOLOr.V OF THE ORINOCO REGION. 137 
parent bird was flushed, was located about 3.5 m. up amid the thick 
branches of a small tree standing in a thicket on the edge of the 
savanna. When discovered there was over half an inch of water in 
the bottom of the nest, the mud that had been used in its construction 
having been so firmly packed and mixed with the grasses and other 
nesting materials that after a heavy rain the water escaped through 
very slowly. 
My observations indicated that the number of eggs in a set varies 
from two to four ; the latter number is, however, unusual. 
Specimens of the Bare-eyed Thrush from Trinidad, together 
with one example from the delta region of the Orinoco, are uniformly 
richer, less greyish olive above than examples from the middle 
Orinoco, and there appears to be a greater amount of white on the 
lower breast and abdomen. It seems not improbable that the exam- 
ination of a large series would justify the subspecific separation of 
the two forms. 
Planesticus albiventer (Spix). 
Tiirdiis albnrntcr Spix. Av. Bras. I. 1824. p. 70; Berlepsch & Hartert 
p. 2. 
Specimens were collected on the Orinoco at various points, 
including Ciudad Bolivar, Altagracia, Caicara, Ouiribana de Caicara, 
Urbana and Maipures, from the delta region at Las Barrancas up- 
ward, as far as the mouth of the Vichada River. 
In life the eye is vandyke brown ; bill mouse grey with yellowish 
cutting edges ; feet smoke grey. 
Spix's Thrush, like the preceding species, frequents dense thickets 
and is shy and retiring. In many of its actions this bird resembles 
the American Robin but is usually conspicuous by its absence about 
the houses, both in the country and in the villages. The nesting 
habits and nests are similar to those of T. gymnophthalmus. A nest 
taken at Caicara. June 14, 1904, was found in a dense thicket, in the 
forks of a small sapling, 1.52 m. from the ground. This nest con- 
tained three eggs, only one of w'hich was preserved, owing to the 
advanced state of incubation. This egg is a pale bluish green thickly 
marked with blotches and spots varying in color from cinnamon- 
rufous to chestnut overlying pale ecru-drab blotches ; it is ovate in 
form and measures 20 x 28 mm. 
