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Aporocidaris eltaniana / left: complete view, upper right: oral view, lower right: lateral view.
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Aporocidaris incerta (after R. Koehler, 1901).
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Aporociadris milleri, aboral view. Collected off Coiba Island, Gulf of Chiriqui, Panama, eastern Pacific by the R. V. Albatross from a depth of 3058 m.
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Aporocidaris milleri / left: apical view, upper right: oral view, lower right: lateral view.
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Aporocidaris usarpi / upper left: apical view, upper right: lateral view, lower view: primary spines.
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Ctenocidaris geliberti.
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Ctenocidaris perrieri / left: complete view, right: detail of the oral view.
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Ctenocidaris polyplax / left: apical view, right: oral view (after Mortensen, 1950).
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Ctenocidaris rugosa / upper view: primary spine, lower view: oral side.
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""Ctenocidaris speciosa ""typical form"" / left: oral view, upper right: detail of the peri-oral area, lower right: primary spine.""
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""Ctenocidaris speciosa ""alleni form"" (after Fell, 1976).""
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Ctenocidaris spinosa / left: complete view, upper right: primary spine, lower right: peri-oral view with oral primaries.
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Notocidaris gaussensis / upper view: apical side, lower view: primary spine.
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Notocidaris lanceolata.
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Notocidaris mortenseni / left: complete view, upper view: upper primary spine, right view: oral primary spines.
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Notocidaris platyacantha.
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Notocidaris remigera / left: oral side, right: complete view.
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Rhychocidaris triplopora / left: complete view, right: ambulacral plates after Mortensen, 1909.