The Amazon region is frequented by the giboia (boa constrictor), and the central plateau by the sucurid (Eunectes murinus), both distinguished for their enormous size.
Among the non-venomous species, the commonest are the boa-constrictor, the anaconda (Eunectes murinus) and the ih'.
Constrictor in the United States.
The ophidians are also very numerous, ranging from the comparatively harmless boa-constrictor to the deadly " palanca " or " fer de lance " (Lachesis lanceolatus) and rattlesnake (Crotalus), of which there are several species.
Squirrels, flying-squirrels, porcupines, civet-cats, rats, bats, flying-foxes and lizards are found in great variety; snakes of various kinds, from the boa-constrictor downward, are abundant, while the forests swarm with tree-leeches, and the marshes with horse-leeches and frogs.
This is an enormous boa-constrictor of great length and weight, which drops upon his prey from the branch of a tree, or steals upon it in the thick grass.
Serpents, especially the boa-constrictor, are numerous.
Among the ophidians, which include many harmless species, are the boa-constrictor, rattlesnake, the dreaded Lachesis and the coral snake.
One of the commonest species of the genus Boa is the Boa constrictor, which has a wide range from tropical Mexico to Brazil.