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 that by mutual consent the tenants of the farm-steads combine in declaring war against them. At the mission-station at Limkana, on the Matebe, my attention was called to the way in which, to gratify this predilection, they will climb up trees in search of nests, after the manner of the land-iguanas, which never frequent the water at all. From the southern coast to the Marutse district I found the water species everywhere. In stréams infested by crocodiles they live in the rapids, which the crocodiles avoid.

In general appearance the land-iguana is similar to the Polydædalus, but it is broader, more unwieldy, and has a shorter tail. It is found on plains, both bare and grassy, in rocky districts, in bushes, and in the forests. It lives upon small birds, mice, rats, centipedes, and many insects, but its favourite food is birds’ eggs. Ordinarily it chooses its abode at the top of a tree, and at the approach of danger will clamber rapidly to its elevated retreat, and lie concealed along one of the boughs; if it should be on the ground, it will creep into a deserted burrow, or failing this, it will stretch itself out as if lifeless; but only touch it, and every symptom of inanimation vanishes; it will start up, develope its full length hiss like a cat, and crawl along on the tips of its claws, its form, that appeared thick and stumpy as it was shrinking on the ground, becoming in an instant lanky and thin as a skeleton. In the abdomen of this pachysaurian there is found a