. A catalogue of the recent sea-urchins (echinoidea) in the collection of the British Museum (Natural History). Sea urchins. ' L J}^. 4l WM. ^:- Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). Dept. of Zoology; Clark, Hubert Lyman, 1870-1947. London : Printed by order of the Trustees of the Museum

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