Polinices bifasciatus

Polinices bifasciatus
Showing aperture
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Family: Naticidae
Genus: Polinices
Species:
P. bifasciatus
Binomial name
Polinices bifasciatus
(Gray in Griffith & Pidgeon, 1833)
Synonyms
  • Natica bifasciatus Gray in Griffith & Pidgeon, 1833

Polinices bifasciatus, or two-banded moon snail, is a species of gastropod mollusc. The animal was first described to science in a work authored by English biologists Edward Griffith and Edward Pidgeon.[1] This was a multi-volume translation of George Cuvier's, Le Règne Animal (1830). The Griffith and Pidgeon work went beyond translation and added a supplement that included the description of Polinices bifasciatus. The description of Polinices bifasciatus is attributed to John Edward Gray.[2] It reads, in its entirety, "Pale brown, with two narrow bands".

Description

The shell is smooth. The exterior is tan or light brown with two widely-separated, narrow white bands. There are about four whorls and a low spire. The shell has a large aperture. The shell is a darker brown at the inside edge of the aperture. The interior is white. The shell reaches a height of 40 mm (1.6 inches) and a diameter of 26 mm (1 inch). The operculum is brown.[3][4]

Distribution

This moon snail is found from in the eastern Pacific Ocean from the Gulf of California to Panama. It has not been documented on the west coast of the Baja Peninsula. It is a shallow water species found in the intertidal zone to 3 meters (10 feet) deep on sand and mud flats.[3][4]

Life history

Like most of the moon snails, Polinices bifasciatus produces a sand collar to lay its eggs during breeding season.[5]

This moon snail preys on small bivalves. It is actively mobile, hunting on soft seabeds for buried clams. It uses an abrasive appendage called a radula to drill into the shells of small clams. Once inside, it secretes digestive fluids and then feeds on the clam slurry that results.[6]

References

  1. ^ Griffith, Edward; Pidgeon, Edward (1834). The Animal Kingdom Arranged in Conformity with its Organization. Vol. 12. London: Whitaker & Company. p. 598.
  2. ^ Petit, Richard E.; Coan, Eugene V. (2008). "The Molluscan Taxa Made Available in the Griffith & Pidgeon (1833−1834) Edition of Cuvier, with Notes on the Editions of Cuvier and on Wood's Index Testaceologicus". Malacologia. 50: 219–264. doi:10.4002/0076-2997-50.1.219. S2CID 86126645.
  3. ^ a b Keen, A. Myra (1958). Sea Shells of Tropical West America. Stanford, California: Stanford University Press. pp. 322–323.
  4. ^ a b "Two-banded Moon | Mexico – Fish, Birds, Crabs, Marine Life, Shells and Terrestrial Life". 7 November 2018. Retrieved 2019-11-25.
  5. ^ Farmer, Wesley M. (1990). Tidepool Wonders of the Sea of Cortez III: (a Field Guide). Seashore Discoveries. p. 48. ISBN 978-0-937772-02-7.
  6. ^ "Moon Shells of the Naticidae Family | Mexico – Fish, Birds, Crabs, Marine Life, Shells and Terrestrial Life". Retrieved 2019-11-25.


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