The chief points of distinction between the two species are in the size and colour. The white-lipped kind is much the larger--frequently weighing one hundred pounds--while a full-grown individual of the collared peccary does not exceed in weight over fifty pounds. The former are of a deeper brown colour, want the white collar around the neck; but in its stead have a whitish patch around the mouth or lips, from which also comes their specific appellation. These are also thicker and stouter, have shorter legs, and a more expanded snout. They troop together in larger droves, that often number a thousand individuals of all ages and sizes. Thus united, they traverse extensive districts of forest--the whole drove occupying an extent of a league in length--all directed in their march by an old male, who acts as leader. Should they be impeded in their progress by a river, the chief stops for a moment to reconnoitre; then plunges boldly into the stream, followed by all the rest of the troop. The breadth of the river, and the rapidity of the current, seem to be but trifling obstacles to them; and are overcome easily, since the peccaries are excellent swimmers. They continue their onward march through the open grounds; over the plantations, which, unfortunately for their owners, may chance to lie in their way; and which they sometimes completely devastate, by rooting out the whole of the crops of maize, potatoes, sugarcane, or manioc. If they should meet with any opposition, they make a singular noise-- chattering their teeth like castanets; and if a hunter should chance to attack them when moving thus, he is sure to be surrounded and torn to pieces: unless he find some tree or other convenient object, where he may make escape, by getting out of their reach. The white-lipped peccaries are found in all the forests of South America--from the Caribbean Sea to the Pampas of Buenos Ayres. They are abundant in Paraguay; and Sonnini, the traveller, has observed them in Guyana. Others report their presence on the Orinoco and its tributaries--as also on all the waters of the Amazon. Most probably, it was from the number of these animals observed upon its banks by the early travellers, that the last-mentioned river obtained one of its Spanish names--the Rio Maranon--which signifies the "river of the wild hogs." CHAPTER SEVENTEEN. HORSES AND ASSES.