ANOTHER addition to the Zoo worthy of note is three young cane-rats (Aulacodus swinderianus) from West Africa. These animals attain a considerable size when adult, the body measuring nearly two feet in length, exclusive of the tail, and weigh as much as 10 Ib. They range from the Sudan to the Cape, and up the west coast as far as Sierra Leone. The fur is conspicuously bristly, speckled with yellow and brown. The incisor teeth are of great size and very powerful. The upper pair are marked by three vertical grooves, sufficiently deep to leave their mark on anything gnawed by these animals. They feed on roots and shoots, and sugar-cane where it is to be had.