There are still some animals which might be added to those in our preceding account, but they are so badly indicated as to be very uncertain; and I rather chose to confine myself to what is known with some degree of certainty, than deliver myself up to conjectures, and treat of fabulous for _existing beings_. Notwithstanding this limitation it will easily be perceived, that our HISTORY OF QUADRUPEDS is as complete as could be expected. It comprehends a great number of animals not observed or described before, and not any of those which were before known, have we omitted to take notice of in the course of this work. The preceding account, though composed of twenty one-articles, yet really contains only nine or ten distinct species, for all the rest are only varieties. The white bear is only a variety of the common kind; the Tartary cow of the bison; the Guinea and Cape Verd hogs of the common hog, &c. therefore, by adding these ten species to about one hundred and eighty before spoken of, the whole number of quadrupeds, whose existence is certain and well ascertained, does not amount to more than two hundred species on the surface of the known world. SUPPLEMENT TO THE QUADRUPEDS. THE CRAB-EATER. THIS animal has been called Crab-eater, or Crab-dog, from his principally living upon crabs. Some travellers have compared him to the dog and the fox, but he has much more affinity to the opossums, than whom, however, he is much larger, and the female does not carry her young in a pouch under her belly; therefore the crab-eater appears to be a different species, from any animal heretofore described.