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Hypermastus randolphi

Species of gastropod

Summary

Species of gastropod

  • Balcis randolphi (Vanatta, 1900) superseded combination
  • Eulima californica Bartsch, 1917
  • Eulima randolphi Vanatta, 1900
  • Melanella californica Bartsch, 1917
  • Melanella randolphi Vanatta, 1900
  • Strombiformis californica Bartsch, 1917

Hypermastus randolphi is a species of sea snail, a marine gastropod mollusk in the family Eulimidae. Bartsch and Vanatta are the major contributors to the taxonomic synonymy of this species of Caenogastropoda.Turgeon, D.; Quinn, J.F.; Bogan, A.E.; Coan, E.V.; Hochberg, F.G.; Lyons, W.G.; Mikkelsen, P.M.; Neves, R.J.; Roper, C.F.E.; Rosenberg, G.; Roth, B.; Scheltema, A.; Thompson, F.G.; Vecchione, M.; Williams, J.D. (1998). Common and scientific names of aquatic invertebrates from the United States and Canada: mollusks. 2nd ed. American Fisheries Society Special Publication, 26. American Fisheries Society: Bethesda, MD (USA). . IX, 526 + cd-rom pp. (look up in IMIS) page(s): 89

Description

The length of the shell attains 6 mm, its maximum diameter 2.3 mm, the length of the aperture 2.1 mm, breadth 1,1 mm, diameter of the apex3 mm.

(Original description) The smooth shell is rather slender and shining. It is bluish white when empty, but when the animal is dried in, the spire is orange colored above, pink in the middle with sometimes a slight yellowish band on the body whorl, opaque. The outlines of the spire are straight and conical. The protoconch is blunt, rounded, of moderate size. The suture is impressed. There are no varices.

The shell consists of seven or eight whorls. The body whorl is ovate, the whorls of the spire are a little convex. The aperture is ovate. The outer lipis sloping to the right, nearly straight; in profile it is moderately arched forward below and sometimes retracted very slightly above. The columella is slender, concave below, convex above, forming an angle with the convex parietal wall. The parietal callus is very thin.

Distribution

This marine species occurs off Alaska.

References

References

  1. Vanatta, 1900. Warén A. & Crossland M.R. (1991) Revision of Hypermastus Pilsbry, 1899 and Turveria Berry, 1956 (Gastropoda: Prosobranchia: Eulimidae), two genera parasitic on sand dollars. Records of the Australian Museum 43(1):85-112. Accessed through: [[World Register of Marine Species]] at http://www.marinespecies.org/aphia.php?p=taxdetails&id=536324 on 2013-03-13.
  2. Warén A. (2011). Checklist of Eulimidae. pers. com.
  3. Gulbin V.V. & Chaban E.M. (2012) Annotated list of shell-bearing gastropods of Commander Islands. Part I. The Bulletin of the Russian Far East Malacological Society 15-16: 5–30.
  4. [https://www.biodiversitylibrary.org/page/6389439 Vanatta E.G. (1900). West American Eulimidae. Proceedings of the Academy of Natural Science of Philadelphia. 51: 254-257] {{PD-notice
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eulimidae gastropods-described-in-1900
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