The Pygmy Hippopotamus (_Hippopotamus liberiensis_), is a great zoological novelty, and second in rarity only to the okapi. Thus far only five specimens ever have been exhibited. An adult Pygmy Hippo is only _one-fourteenth_ the size of an adult Nile Hippo. Our three specimens, a female and two males, are exhibited in the Elephant House. They arrived in 1912, and were captured in Liberia, West Africa. The cost price of the trio was $15,000. They have excellent appetites, never have been ill, and they seem to enjoy their new home. Their habits, capture, and their home surroundings have been fully described in the _Bulletin_ (No. 52) and the Annual Report for 1912 of the Zoological Society. The Pygmy Hippopotamus is far more widely distributed throughout Liberia than might be inferred from the surprising scarcity of specimens in museums, and the long absence of the species from zoological gardens. It is an inhabitant of swampy forests, and while it frequents rivers it is not confined to them, like the large hippo. It seeks shelter from molestation in large cavities in river banks, usually under the roots of overhanging trees. These specimens were caught by digging pits in their runways, with sides so steep that the captives could not climb out. After capture, each animal was placed in a huge basket crate, slung under a pole, and carried by natives over the rough forest trails to the nearest river transportation. The Tapirs.—Near the end of the Order of Hoofed Animals, (_Ungulata_), is found the Tapir Family, represented in both the old world and the new, by about five species. These very odd creatures inhabit the densest forests of the tropics, where vegetation grows rankly, and few other large hoofed animals can live. They are very fond of water, and swim well. The South American Tapir, (_Tapirus terrestris_), takes kindly to captivity, breeds in confinement, and always manages to look well-fed and as sleek as a seal. Its color is a rich mahogany brown, and its long, prehensile nose is strongly suggestive of the end of an elephant’s trunk. The shoulder height of a full-grown animal is about 37 inches. This species inhabits Venezuela, the Guianas, Brazil, Paraguay, Uruguay and some other regions of South America. Some of the Central American Tapirs inhabit mountain regions, but all are exceedingly wary, and difficult to find without dogs. The Malay Tapir, (_Tapirus indicus_), of the Malay Peninsula and Sumatra, may be recognized as far as it can be seen, by its colors. The front half of the animal, and its legs, are black or dark brown, and the rear half of the body is white. It is much larger than the preceding species. THE WOLF DENS, No. 22.