201 DUCK-BILLED PLATYPUS. _ Tue duck-billed platypus is one of the most singular animals that has ever been discovered. It has not been known many years, and is one of the productions of New Holland. The most curious feature, as it may properly be called, in this anomalous quadruped, is its duck-like _ bill, which harmonizes with its webbed feet; thus com- bining the parts both of a bird and an animal. The body is long, low, and depressed. The fur is close-set, and consists of two kinds, that which is underneath being soft, short, and waterproof, and the outer covering being long, fine, glossy hair, thickly set. The tail is strong, broad, and flattened, and of moderate length. The general colour of the creature is deep brown, the head and the under parts being of a paler hue than the upper. The average length of the head and body, including the tail, is from twenty to twenty- three inches, the beak being about two inches and a half in length, and the tail four or five inches. The duck-billed platypus has never yet been brought alive to Europe. Mr. Bennet says of a family of them which he procured, and kept for a considerable time, “The young sleep in various postures; sometimes in an extended position, and often rolled up, like a hedgehog, in the form of a ball. They formed an interesting group, lying in various attitudes in the box in which I had placed them, and seeming happy and cuntent. Thus, for instance, one lies curled up like a dog, keeping its back warm with the flattened tail, which is brought over a8 2c