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INTRODUCTION.
I have also to acknowledge with gratitude the permission liberally granted to me by the Trustees of the British Museum, the Zoological Society, Messrs. Macmillan and Co., and Messrs. Black and Co., of Edinburgh, to publish copies of woodcuts laken from their publications. The work from which the cut is taken is quoted in each case. Several of the illustrations are, by permission of the Zoological Society, taken from drawings by the late Col. Tickell, and from the superb collection made by Mr. B. H. Hodgson, both of which series are now in the Society's Library. The majority of the cuts are copied, from drawings by Mr. R. E. Holding and Mr. P. J. Smit, by the Typographic Etching Company's process.
