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Cuvierina columnella
(Rang, 1827)
 
Cuverina columnella
Maximum size:  8 mm shell length.

Identification:  This species has a cylindrical, transparent-white shell with a flattened aperture and blunt apex.

Natural history:  Fragments of Cuvierina columnella shells are moderately rare in sand samples. Live animals are occasionally seen at night in near-shore waters. As in many other cavolinids, the conical juvenile shell is usually lost as the animal matures.

Distribution:  Big Island, Maui and Niihau: widely distributed in the Indo-Pacific.

Taxonomic notes:  The photo labeled Creseis sp. in Kay, 1979 is this species. Most Hawaiian material seems closest to Cuvierina tsudai, Burridge, Janssen & Peijnenburg, 2016 as illustrated in Jansen, et. al., 2019. However, photos of other shells held at CAS (from the Vanderbilt Pacific Equatorial Expedition of 1951) and fragmentary shells from beach drift/sand samples create some ambiguity in interpreting the characteristics of "longitudinal microornament" and aperture shape. So, we're leaving it as C. columnella, pending further input.

Photo:  Doug Perrine: off the Kona Coast, Big Island; 6-12 m (20-40 ft); at night; Dec. 4, 2017.

Observations and comments:

Note 1:  ( )
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