There are two canines: one is Azara's beautiful grey fox-like dog, purely a fox in habits, and common everywhere. The other is far more interesting and extremely rare; it is called _aguará,_ its nearest ally being the _aguará-guazú,_ the Canis jubatus or maned wolf of naturalists, found north of the pampean district. The aguará is smaller and has no mane; it is like the dingo in size, but slimmer and with a sharper nose, and lias a much brighter red colour. At night when camping out I have heard its dismal screams, but the screamer was sought in vain; while from the gauchos of the frontier I could only learn that it is a harmless, shy, solitary animal, that ever flies to remoter wilds from its destroyer, man. They offered me a skin--what more could I want? Simple souls! it was no more to me than the skin of a dead dog, with long, bright red hair. Those who love dead animals may have them in any number by digging with a. spade in that vast sepulchre of the pampas, where perished the hosts of antiquity. I love the living that are above the earth; and how small a remnant they are in South America we know, and now yearly becoming more precious as it dwindles away. The pestiferous skunk is universal; and there are two quaint-looking weasels, intensely black in colour, and grey on the back and flat crown. One, the Galictis barbara, is a large bold animal that hunts in companies; and when these long-bodied creatures sit up erect, glaring with beady eyes, grinning and chattering at the passer-by, they look like little friars in black robes and grey cowls; but the expression on their round faces is malignant and bloodthirsty beyond anything in nature, and it would perhaps be more decent to liken them to devils rather than to humans. On the pampas there is, strictly speaking, only one ruminant, the Cervus campestris, which is common. The most curious thing about this animal is that the male emits a rank, musky odour, so powerful that when the wind blows from it the effluvium comes in nauseating gusts to the nostrils from a distance exceeding two miles. It is really astonishing that only one small ruminant should be found on this immense grassy area, so admirably suited to herbivorous quadrupeds, a portion of which at the present moment affords sufficient pasture to eighty millions of sheep, cattle, and horses. In La Plata the author of _The Mammoth and the Flood_ will find few to quarrel with his doctrine.