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Haplocochlias

Haplocochlias is a genus of sea snails, marine gastropod mollusks in the family Skeneidae.

Description

The solid, subperforate shell has a turbinate shape. The aperture is rounded. The thick peristome is continuous and exteriorly varicose. The columella is not callous.

The shell is small to minute (1–6 mm in height), turbiniform, with a closed to narrowly open umbilicus lined internally with spiral cordlets. The protoconch comprises about three-quarters of a whorl and is either smooth or bears fine spiral cordlets. The teleoconch has a rounded to slightly angular periphery, ornamented with numerous spiral cords and fine axial striae, with minute tubercles present in the interspaces. The aperture is prosocline, with a continuous peristome. The columella is sometimes reflected toward the umbilicus, broadening at its base, and in some species displaying a depressed area where it meets the umbilical cord. The outer lip may be either broad or delicate, and is crenulated or anteriorly expanded.

Species

Species within the genus Haplocochlias include:

Species brought in to synonymy:
  • Haplocochlias minutissimus <small>Pilsbry, 1921</small>: synonym of Lophocochlias minutissimus <small>(Pilsbry, 1921)</small>
  • Haplocochlias onaneyi <small>Espinosa, Ortea & Fernández-Garcés, 2005</small>: synonym of Haplocochlias williami <small>Barros, Santos, Santos, Cabral & Acioli, 2002</small>
  • Haplocochlias risonideneryae[sic]: synonym of Haplocochlias risoneideneryae <small>Barros, Santos, Santos, Cabral & Acioli, 2002</small>
  • Haplocochlias swifti <small>auct. non Vanatta, 1913</small>: synonym of Haplocochlias nunezi <small>Espinosa, Ortea & Fernández-Garcés, 2005</small>

References

External links