CHERRIE: ORMTHOLOGY OF THE ORIXOCO REGION. 1/3 
The nesting season on the Upper Orinoco begins in December, 
while on the middle stretches of the river from Caicara downward, 
breeding does not begin before the tirst of April. 
A nest of this species taken at Quiribana de Caicara April 9th, 
was taken from the branches of one of the small scrub oaks that 
grow scattered over the open savanna. . It was about 2.4 m. from the 
ground amid a cluster of small branches, and admirably concealed 
by green leaves from above and on the sides. The outer walls of the 
nest were constructed almost entirely of leaf stems ; the lining con- 
sisted of ver\- fine, hair-like grass and rootlets together with a few bits 
of greenish-white lichens. There were two eggs, both incubated, 
only one of which was saved. In color this was a "whitish-brown," 
finely speckled all over, but more thickly on the larger end, with 
rufous brown. It measured 20 x 15.1 mm. 
A nest collected at Maipures on the 9th of January, was held 
between the slender tips of the upright branches of a dwarf scrub 
oak, which had found a scanty foothold between rocks near the 
river bank. It was only about 1.5 metres from the ground, was 
similar in construction to the nest described above, but had a number 
of half decayed leaves woven into the body of the nest, all bound 
together with cobwebs. This nest measures, outside 8.2 cm. diameter 
by 6.5 cm. depth ; inside 5 cm. diameter by 3.4 cm. depth. In the 
black hair-like vegetable fibres of the inner lining are several 
bits of greenish-white lichens. The two eggs are ovate in form and 
measure 20x15.2 mm. In color they are a soiled white, thickly 
marked all over with fine specks and dots of a shade of brown between 
Vandyke and chestnut which are so closely set about the larger end 
as to form a band. In one egg the specks and spots are much larger 
and more prominent than in the other. Not more than two eggs 
were found in each of more than a dozen nests examined, so that two 
is probably a normal clutch. 
Tangar,-\ mexican.\ media (Berlepsch & Hartert). 
Callistc niexicana media Berlepsch & Hartert, Xovit. Zool. IX. 1902. 
p. 19. (Type, Tring ]Museum, Maipures. Orinoco River.) 
This form of Tangara which is intermediate in coloration 
between T. niexicana mexicana from Cayenne and T. niexicana vieilloti 
of Trinidad and the delta region of the Orinoco, was common at 
Perico, at the foot of the falls of Atures, and as far beyond as I col- 
lected on the upper Orinoco. It is often mentioned in my notes. 
