Notwithstanding all these differences which M. Vosmaër has described, and the aversion which M. Allamand states it to have shewn to the common sow, I still have my doubts whether it be any thing more than a variety of the European hog; for we know that this species varies greatly in Asia, Siam, and China; and these doubts seem to be somewhat supported, by having found about thirty years since, an enormous head of a wild boar that had been killed in our own woods, the tusks of which were nearly as large as those of the Cape boar. To this may be added the information I received from M. Comerson, who says there are wild boars in Madagascar, whose heads are like the common kind from the ears to the eyes, but that under the eyes they have a protuberance, which decreasing gradually to the end of the snout, gives the animal the appearance of having two heads, the one being, as it were partly sunk in the other; and this information also made me conclude that the animal I have mentioned under the appellation of the wild boar of Cape Verd is the same as what is found in Madagascar. 13. THE MEXICAN WOLF. As the wolf is a native of cold climates, he must have passed northerly into America, since he is met with in both continents. We have spoken of the black and grey wolf of North America. It appears that this species is dispersed as far as New Spain and Mexico; and that in this warm climate it has undergone many varieties, without having changed either its disposition or nature, for the Mexican wolf has the same figure, appetites, and habitudes, as the European or North American wolf, and they all seem to be of the same species. The wolf of Mexico, or rather of New Spain, where he is much oftener found than in Mexico, has five toes on his fore-feet, and four on those behind. The ears are long and straight, and the eyes sparkling, like our wolves; but the head is larger, the neck thicker, and the tail not so bushy. Above the mouth there are some thick bristles, as large, but not so stiff as those of the hedge-hog. The body is covered with greyish hair, marked with some yellow spots. The head is of the same colour as the body, crossed with brown stripes, and the forehead adorned with sallow-coloured spots. The ears are grey, like the head and body. There is a long yellow spot on the neck, a second on the breast, and a third on the belly. The flank is marked with transverse bands from the back to the belly. The tail is grey with a yellow spot in the middle. The legs are striped from top to bottom with grey and brown. This wolf is the most beautiful of the kind, and its fur ought to be valued for its variety of colours.[AF] But in other respects there is not the least indication of its being a different species from the common wolves, which vary in colour from grey to white, and from white to black, without changing the species; and we see, by the testimony of Fernandes, that these wolves of New Spain vary like the European wolf,