It is their general shape, and the possession of what may be called a toe-thumb, which makes the Lemuroids resemble Monkeys, but the likeness is not with those of the Old World, but with the furry Marmosets, with long canine and projecting front teeth, of the New World. But although there are these points of resemblance, the intelligence of the Monkey is far in advance of that of the Lemur, and this can be well estimated when their eyes are compared. In the Monkey the eye is very movable, full of varying expression, and often has the aspect of supreme cunning and mischief; but this is never the case in the others, whose fixed, staring eyes have no speculation in them. Differing as they do from the world of Monkeys, the Lemuroida still resemble them as a whole, more than they do any other animals, and therefore they are associated with them in the scheme of classification. They belong, therefore, with the Monkeys, and man, to the _Primates_, and as they present important differences from the Monkeys, they are classified in a separate sub-order of the Primates. This sub-order is called the Lemuroida, a term which has already been explained. Some zoologists, impressed with their great resemblance to the Apes, have called them the Half Apes, and others, looking upon them as the forerunners of the Monkeys, term them Pro-Simia. [Illustration: SIDE VIEW AND UNDER SURFACE OF THE TONGUE OF A LEMUROID.] The Lemuroida live in very out-of-the-way places, and the majority are in Madagascar, which is an island very little visited by Europeans, and where some naturalists have studied them and their habits under great difficulties. The skins of captured specimens have been stuffed, and a few living kinds have found their way to England; hence there are some fine groups of stuffed Lemuroida in the British Museum, and some living species in the Zoological Gardens. Marvellous stories, of course, abound amongst the natives regarding their tricks and habits, and the sober truth has been very difficult to distinguish from error, especially as the night is the scene of their gaiety. Nevertheless, during the last few years much knowledge has come to hand about these interesting creatures, and it has been rendered all the more important by the labours of the comparative anatomists, who have dissected many kinds of them, and described their results.