. Cassell's natural history. Animals; Animal behavior. THE 291 jaw bite in between it and the row of the upper maxilhiry teeth, in a long groove. By friction during some years of mastication these three sets of teetli become worn, so that those on the lower jaw, or mandible, are ground to an edge, and the others on their inner and outer faces respectively. There is great solidity of the large skull at the jaw-joint, and the quadrate bone is fixed to the side of the head, whilst the squamosal, quadrato-jugal, and pterygoid bones are (unlike in all other Lizards) united by bone. More
. Cassell's natural history. Animals; Animal behavior. THE 291 jaw bite in between it and the row of the upper maxilhiry teeth, in a long groove. By friction during some years of mastication these three sets of teetli become worn, so that those on the lower jaw, or mandible, are ground to an edge, and the others on their inner and outer faces respectively. There is great solidity of the large skull at the jaw-joint, and the quadrate bone is fixed to the side of the head, whilst the squamosal, quadrato-jugal, and pterygoid bones are (unlike in all other Lizards) united by bone. Moreover, they are strengthened by the ossification of a membrane which, in Lizards, extends between the quadrate, the pterygoid, and the skull, and bounds the front walls of the cavity of the ear. The bodies of the vertebrte are hollow in front and behind, and there is a remarkable system of sternal and abdominal These Lizards ajipear to eat large insects and small ground birds. THE SUB-ORDER VERMILINGUES.—THE :LE0NS. The Lizards of this sub-order are most remarkable in their appearance, anatomy, physiology, and habits, and the well-known ChaniEeleon, so grotesquely formed, and so changeable in its colours, is the type of the only family of it—the Ghammleonidce. The species are numerous, and are found in Southern Europe, Africa, Asia Minor, Hindostan, and Ceylon. There are no less than twenty-one species in Madagascar. Lately it has been proposed to form them into two genera, one of which is Chamaeleon and the other Ehampholeon. The Chamteleon has been thus termed after its curious designation by the Greeks. They called it x''A""^«'»'>'. or Small Lion, and yet a more significant name might have been given to it, for Aristotle described the strange creature with his usual great accuracy. It is one of the most extraordinary look- ing things in Nature, and its flattened body is surmounted by a crest of toothed skiu on the thin back. The neck is creased
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