Homalopoma luridum

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Homalopoma luridum
Homalopoma luridum.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Superfamily: Phasianelloidea
Family: Colloniidae
Subfamily: Colloniinae
Genus: Homalopoma
Species:
H. luridum
Binomial name
Homalopoma luridum
(Dall, 1885)
Synonyms [1]
  • Homalopoma carpenteri(Pilsbry, 1888)
  • Homalopoma juanensis(Dall, 1919)
  • Leptothyra carpenteriPilsbry, 1888
  • Leptothyra coccineusDeshayes, G.P., 1833

Homalopoma luridum, with the common name: Dall's dwarf turban, is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae. [1] [2]

Contents

Description

The height of the shell varies between 6 mm and 10 mm. Its color is red, ashen or purple. The small, globose shell is very solid and imperforate. The spire is conic, more or less depressed. The suture is moderately impressed. There are five whorls. These are slightly convex, the last decidedly deflected toward the aperture, encircled by about fifteen subequal spiral lirae, separated by interstices about as wide as the ridges. The incremental striae are generally strongly developed, causing the liree to appear nodose or somewhat irregular, and the interstices to appear pitted. The oblique aperture is pearly white within. It measures about half the length of shell. The columella is arcuate. The base of the shell is obsoletely uni- bi- or tri-dentate. The rounded oval operculum is nearly smooth and slightly concave in the middle. [3]

Distribution

This species occurs in abundant numbers in the Pacific Ocean under rocks and an shale at low tide from Sitka, Alaska to Northern Baja California, Mexico.

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References

  1. 1 2 Rosenberg, G. (2012). Homalopoma luridum (Dall, 1885). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=528071 on 2013-02-10
  2. ↑ Turgeon, D.D., et al. 1998. Common and scientific names of aquatic invertebrates of the United States and Canada. American Fisheries Society Special Publication 26
  3. ↑ G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia (described as Leptothyra carpenteri)
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