“ They have no quills in their wings, which are as rigid as the flippers of a cetacean, and utterly useless for flight, though they move freely at the shoulder-joint, forming most efficient paddles, and are usually worked alternately with a rotatory motion. They make no nests, and lay a single egg, which is tended by both birds, and the female takes charge of the young for nearly 12 months. The emperor penguin is Aptenodytes patagonica, and the king penguin A. longirostris. ”