Calliostoma haliarchus

Calliostoma haliarchus
Shell of Calliostoma haliarchus (Melvill, 1889), 28.8 mm height by 25.5 mm diameter, Kii Channel, Japan, 100 m on sand
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Vetigastropoda
Superfamily: Trochoidea
Family: Calliostomatidae
Subfamily: Calliostomatinae
Genus: Calliostoma
Species: C. haliarchus
Binomial name
Calliostoma haliarchus
(Melvill, 1889)
Synonyms
  • Benthastelena haliarchus Melvill, 1889
  • Calliostoma sowerbyi Pilsbry, 1889.[1]
  • Calliostoma (Benthastelena) haliarchus (Melvill, J.C., 1889)
  • Ziziphinus haliarchus Melvill, 1889
  • Ziziphinus jucundus Sowerby, 1878 non Trochus jucundus Gould, 1849[1]

Calliostoma haliarchus, common name the sea monarch top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.[2][3]

Description

The height of the shell varies between 40 mm and 50 mm. This species has a fine, top-shaped, erectly conical shell, which is almost triangular in side view, with a sharp basal angle. The tall, flat-sided spire has 9-10 whorls. They are plane, sloping, nearly smooth, and encircled by delicate lirae, with little granules. Two in the vicinity of the suture are larger and. decorated with larger grainsThe body whorl is acutely angled at the base The shell surface appears smooth, but is encircled by many fine granulated spiral striae. The base is a little inflated. The umbilicus is absent. Color is light brown with darker brown spots or white patterns present on the spiral striae.[2] The lirae of the base of the shell are nearly smooth and dotted. The base is plane and subconvex. The columella is callous. The fauces (the part of a spiral shell that can be seen when looking into the aperture) are smoothly striate.[4]

Distribution

This species occurs in Southern Hokkaido, Japan and southwards, at 50 to 200 m depth on fine sand. It is also found off the Oga Peninsula, Japan Sea, and Cheju Island, Korea.[1] It also occurs in the southwest Pacific.

External links

References

  1. ↑ 1.0 1.1 1.2 Catalogue and Bibliography of the Marine Shell-Bearing Mollusca of Japan (1999), Elle Scientific Publications, by Shun'ichi Higo, Paul Callomon, and Yoshihiro Goto, p. 61
  2. ↑ 2.0 2.1 Seashells of the Western Pacific (1965), Hoikusha Publishing Co., Ltd., by Tetsuaki Kira, Vol. 1, p. 12
  3. ↑ WoRMS (2010). Calliostoma haliarchus (Melvill, 1889). In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=467197 on 2012-06-21
  4. ↑ Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia