nual rainfall in eastern
Bolivia are as follows: 10 deg. S. lat., 90.8 deg. F. and 31.5 in.
rainfall; 15 deg. S. lat., 86 deg. F. and 30.7 in. rainfall; 20 deg.
S. lat., 81 deg. F. and 30 in. rainfall; and 25 deg. S. lat., 76.8
deg. F. and 29.3 in. rainfall.

_Fauna._--The indigenous fauna of Bolivia corresponds closely to that of
the neighbouring districts of Argentina, Brazil and Peru. Numerous
species of monkeys inhabit the forests of the tropical region, together
with the puma, jaguar, wildcat, coati, tapir or _anta_, sloth, ant-bear,
paca (_Coelogenys paca_) and capybara. A rare species of bear, the
_Ursus ornatus_ (spectacled bear) is found among the wooded Andean
foothills. The chinchilla (_C. laniger_), also found in northern
Argentina and Chile, inhabits the colder plateau regions and is prized
for its fur. The plateau species of the viscacha (_Lagidium cuvieri_)
and the widely distributed South American otter (_Lutra paranensis_) are
also hunted for their skins. The peccary, which prefers a partially open
country, ranges from the Chaco to the densely wooded districts of the
north. There are two or three species of deer, the most common being the
large marsh deer of the Chaco; but the deer are not numerous. The
armadillo, opossum, ferret and skunk are widely distributed. The
amphibia are well represented throughout the lower tropical districts.
Alligators are found in the tributaries of the Paraguay and their
lagoons, lizards and turtles are numerous, and the batrachians are
represented by several species. Snakes are also numerous, including
rattlesnakes and the great boa-constrictors of the Amazon region.

The most interesting of all the Bolivian animals, however, are the
guanaco (_Auchenia huanaco_) and its congeners, the llama (_A. llama_),
alpaca (_A. pacos_) and vicuna (_A. vicugna_), belonging to the
Camelidae, with the structure and habits of the African camel, but
smaller, having no hump, and inhabiting a mountainous and not a level
sandy region. They are able to go without food and drink for long
periods, and inhabit the arid and semi-arid plateaus of the Andes and
the steppes of Patagonia. The guanaco is supposed to be the original
type, is the largest of the four, and has the greatest range from Peru
to Tierra del Fuego. The llama and alpaca were domesticated long before
the discovery of America, but the guanaco and vicuna are found in a wild
state only. The llama is used as a pack animal in