THE AMAZON DISTRICT. 
475 
latitude, and from the mountains of Cayenne to the 
Andes, south of Bogota. 
Another bird appears bounded by a geological forma- 
tion. The common red -backed parrot, Psittacus festivus, 
is found all over the Lower Amazon, but, on ascending 
the Bio Negro, has its northern limit about St. Isabel, 
or just where the alluvial country ends and the granite 
commences; it also extends up the Japura, but does 
not pass over to the Uaupes, which is all in the granite 
district. 
The fine blue macaw {Macrocercus Maximilianus ?) 
inhabits the borders of the hilly country south of the 
Amazon, from the sea-coast probably up to the Madeira. 
Below Santarem, it is sometimes found close up to the 
banks of the Amazon, but is said never to cross that 
river. Its head-quarters are the upper waters of the 
Tocantins, Xingu, and Tapajoz rivers. 
As another instance of a bird not crossing the Amazon, 
I may mention the beautiful curl-crested Ara^ari {Ftero- 
fflossus Beauliarnasii), which is found on the south side 
of the Upper Amazon, opposite the Rio Negro, and at 
Coari and Ega, but has never been seen on the north 
side. The green Jacamar of Guiana also {Galhula viri- 
dis) occurs all along the north bank of the Amazon, but 
is not found on the south, where it is replaced by the 
G. cyanocollis and G. maculicauda, both of which occur 
in the neighbourhood of Para. 
