They are most destructive among fish, and are apt to rise quietly underneath a fish as it basks near the surface of the water, grasp it beneath with its sharp-edged jaws, and tear away the piece, leaving the fish to die. It is rather remarkable that the Lepidosiren, or mud-fish of the Gambia, destroys fish in a precisely similar manner, though, as its jaws are much sharper than those of the Emys, it does not need the aid of fore-paws in biting out its mouthful of flesh. Like the land Tortoise, it is one of the hibernators, and during the winter months buries itself deeply in the earth, choosing for this purpose the soft, muddy bed or bank of the pond in which it lives. Its eggs are white, and hard-shelled, but are more oval than those of the land Tortoise, and both ends are nearly alike. In fact, its egg might well be mistaken for that of a small pigeon. The shell has a porcelain-like look, and is very liable to crack, so that the resemblance is increased. There is one drawback to these reptiles when kept as pets. They give out a very unpleasant odour, which is disagreeable to human nostrils, but is absolutely terrifying to many animals. The monkey tribe have the strongest objection to these aquatic Tortoises. I once held one of them towards a very tame chimpanzee, much to his discomfiture. He muttered and remonstrated, and retreated as far as he could, pushing out his lips in a funnel-like form, and showing his repugnance to the reptile in a manner that could not be mistaken. Horses seem to be driven almost frantic with terror, not only by the sight, but by the odour of these Tortoises. In Southern Africa there are Tortoises closely allied to the Caspian Emys, and having the same power of frightening horses. I have read an account of an adventure there with one of those Tortoises, which I will give. This variety is described as being of an olive colour. When adult, there is a slight depression on either side of the vertebral line. "Some very awkward accidents have occurred to parties from the terror caused by the fresh-water turtle (_Pelamedusa subrufa_). Carts have been smashed to fragments, riders thrown, and the utmost confusion caused by them. It is their smell, and it is certainly very disagreeable. "My first acquaintance with the fact was in this wise. I was out shooting with two young ladies who had volunteered as markers; and, as you know, all our shooting is done from horseback. I had jumped off for a shot at some francolins near a knill, or water-hole, and, after picking up my birds, was coming round the knoll to windward of the horses. In my path scrambled a turtle. I called out to my young friends, and told them of my find, on which one of them, in a hasty voice, said, 'Oh, please, Mr. L., don't touch it; you will frighten the horses!'