Homalopoma paucicostatum

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Few-ribbed dwarf turban
Homalopoma paucicostatum 001.jpg
Drawing of a shell of Homalopoma paucicostatum
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Superfamily: Phasianelloidea
Family: Colloniidae
Subfamily: Colloniinae
Genus: Homalopoma
Species:
H. paucicostatum
Binomial name
Homalopoma paucicostatum
(Dall, 1871)
Synonyms

Leptothyra paucicostataDall, 1871 (original combination)

Contents

Homalopoma paucicostatum, common name the few-ribbed dwarf turban, is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae. [1] [2]

Described

As attested by the epithet, the small, depressed-globose shell of this species has few, prominent spiral ribs. The shell grows to a height of 4 mm. The shell is solid and imperforate. The four whorls rapidly increase and are very strongly spirally lirate. There are seven to eight lirae on the body whorl, separated by deep grooves, in which incremental strife are evident. The sutures are canaliculate. The aperture is contracted and pearly white within. The columella ends in a callous tubercle. The color of the shell is rusty brown or rose-red, frequently with alternating white spots on the ribs. The interstices are generally lighter, sometimes pure white. [3]

Distribution

This is a fairly common species living at low tide in sand, under rocks and on broken shells in the Pacific Ocean off California.

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References

  1. ↑ Rosenberg, G. (2012). Homalopoma paucicostatum (Dall, 1871). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=528073 on 2013-02-10
  2. ↑ Abbott R. T. (1974). American Seashells. The marine mollusca of the Atlantic and Pacific coast of North America. II edit. Van Nostrand, New York 663 p. + 24 pl:
  3. ↑ G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia
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