A catalogue of the recent sea-urchins (Echinoidea) in the collection of the British Museum (Natural History) /  by Hubert Lyman Clark  ; [with a preface by C. Tate Regan]. <i>fig</i>.1 <a href="//commons.wikimedia.org/w/index.php?title=Notocidaris_platyacantha&amp;action=edit&amp;redlink=1" class="new" title="Notocidaris platyacantha (page does not exist)">Notocidaris platyacantha</a><i> (H.L. Clark, 1925)</i>
British Museum (Natural History).; Clark, Hubert Lyman
1925
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