Note (return) — THE NATURALIST.

In conclusion, it is interesting to remark that the whole series of these very singular animals offers a notable example of one genus being confined to a particular country. We have observed that they all belong to South America; nor do we find that in any parts of the old world, or, indeed, in the great northern division of the new, any races of quadrupeds at all to resemble them, or in any manner to be compared with them. They may be said to stand perfectly insulated; they exhibit all the characters of a creation entirely distinct, and except as to the general characters of mammiferous quadrupeds, perfectly of their own kind. There is no break in the whole circle of them, no deviation or leaning towards any other organized form; so that the boldest conjecture will hardly venture to guess at any other than a separate creation for these animals, and a distinct allocation in South America. This peculiarity is rendered the more striking by the facility with which it seems to endure removal, even to our latitudes; thereby proving that its present confined identity with South America is not altogether the result of its physical necessities.10