THE CHANGEABLE TREE FROG.

Throughout all parts of the continent we shall find a curious little

toad, about two inches in length, which possesses the nature of the

chameleon--in being able to change its colour according to the tints of

the object on which it rests. By this means, so completely does it

assimilate its hue to the ground, that it often escapes observation.

The changes of colour it thus rapidly passes through are indeed

remarkable. From a nearly perfect white, it can assume every

intermediate shade to a dark brown. It has a very toad-like look, and

possesses skin glands which secrete an acrid fluid. Thus it is able,

when attacked, to defend itself, as well as escape observation.

It may frequently be found on old plum-trees, where it climbs in search

of the insects which there congregate. We shall frequently hear its

voice, especially before rain, for it is a noisy creature. It has a

liquid note, sounding like "el" frequently repeated, and then ending

with a sharp, short monosyllable.

It leaves its arborial habitation during the breeding season, and makes

its way to the nearest pools, where it joins in the concerts of its

relatives.

It hibernates during winter, burrowing beneath the damp ground.

The Western World Picturesque Sketches of Nature and Natural History in North and South America · 第 104 / 404 题