BI-2019-007, MR18-06

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EP19-0184. Curved "hat" gastropods from spines of Stereocidaris nascaensis and often found on top of each other. From pooled urchins. Same morphospecies as EP19-0183. All individuals removed from urchin spines; "operculum" seems calcareous and cemented to the urchin spine, so it breaks off when the animal is removed from the spine. One individual (photographed) vouchered in the same tube as its separated operculum remaining on the spine. One individual with the operculum removed, in a separate formalin voucher tube. Approximately 10 additional individuals in ethanol across two tubes. Formalin material: 1 (2 ml), 1 with separate operculum (2 ml). Ethanol material: 10 (2 x 2 ml). Photos: Leica S8Apo, +0.63x lens, operculum voucher individual x1.25: 9927, 28, x2.5: 9929; no-operculum voucher individual: x1.25: 9930, 31, x4.0: 9932...38, x6.3: 9939...44. Representative photo: IMG_9927_small.JPG.