Schouw advocates a class of plants that grow upon living animals — the Plantae Epizoae. Of this class are the Fuci and Algae. Mr. J. B. Williams, of Salem, Mass., presented the "National Institute" with an insect from New Zealand, with the following description: "The Hotte, a decided caterpillar, or worm, is found gnawing at the root of the Rota tree, with a plant growing out of its head. This most peculiar and extraordinary insect travels up both the Rota and Ferriri trees, and entering into the top, eats its way, perforating the trunk of the trees until it reaches the root, and dies, or remains dormant, and the plant propagates out of its head; the body remains perfect and entire, of a harder substance than when alive. From this insect the natives make a coloring for tattooing."