. A catalogue of the recent sea-urchins (echinoidea) in the collection of the British Museum (Natural History). Sea urchins. Clark, Echino idea PLATE X. 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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Keywords: ., bookauthorbritishmuseumnaturalh, bookcentury1900, bookdecade1920