Calliostoma selectum

Calliostoma selectum, common name the select maurea, is a species of medium-sized sea snail, a marine gastropod mollusc in the family Calliostomatidae, the calliostoma top snails.[4]

Calliostoma selectum
A shell of Calliostoma selectum from the Kapiti Coast, north of Wellington, New Zealand.
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Vetigastropoda
Superfamily:	Trochoidea
Family:	Calliostomatidae
Subfamily:	Calliostomatinae
Tribe:	Calliostomatini
Genus:	Calliostoma
Subgenus:	Maurea
Species:	C. selectum
Binomial name
Calliostoma selectum (Dillwyn, 1817)
Synonyms[1][2]
Calliostoma carnicolor Preston, 1907 Calliostoma hodgei Hutton, 1893 Calliostoma pagoda Oliver, 1926 Calliostoma ponderosa Hutton, 1893 Calliostoma (Calliotropis) cunninghamii Oliver, 1926 Calliostoma (Calliotropis) hodgei Oliver, 1926 Calliostoma (Calliotropis) pagoda Oliver, 1926 Calliostoma (Calotropis) cunninghamii Thiele, 1929 Calliostoma (Maurea) cunninghami Shikama & Horikoshi, 1963 Calliostoma (Maurea) selectum (Dillwyn, 1817) Calliostoma (sensu lato) selectum Beu & Maxwell, 1990 Maurea hodgei Fleming, 1966 Maurea ponderosa Fleming, 1966 Maurea pellucida Abbott & Dance, 1982 Maurea selecta Powell, 1979 Maurea (Calotropis) cunninghami Fleming, 1966 Maurea (Calotropis) cunninghami cunninghami Powell, 1946 Maurea (Maurea) cunninghami cunninghami Powell, 1937 Maurea (Maurea) cunninghami pagoda Powell, 1957 Trochus cunninghami Gray, 1834 Trochus selectus Dillwyn, 1817 Trochus torquatus Anton, Phil., Venustas cunninghami regifica Finlay, 1927 Venustas regifica Finlay, 1927 Venustas (Venustas) cunninghami Finlay, 1926 Venustas (Venustas) hodgei Finlay, 1926 Venustas (Venustas) ponderosa Finlay, 1926 Ziziphinus cunninghami Gray, 1843, Zizyphinus cunninhami Reeve, 1863 Zizyphinus decarinatus Hutton, 1884 (not Perry, 1811) Zizyphinus hodgei Hutton, 1875[3] Zizyphinus ponderosus Hutton, 1885

Some authors place this taxon in the subgenus Calliostoma (Maurea).

Description

The height of shell varies between 30 mm and 50 mm. The large, conical shell is imperforate. It is solid, but rather thin. Its color is very pale fawn-color, almost white, with elongated brown dots on the spiral riblets. The upper surface has numerous delicate spiral closely granulose riblets, numbering about 10 or 11 on the penultimate whorl, but more numerous on the upper surface of the body whorl because interstitial lirulae are intercalated. On the antepenultimate whorl there are 5, and on earlier whorls 3 granose lirae. On the base of the shell there are distinctly granose concentric lirae in the middle, but toward the periphery the lirae become smaller, narrower, and less distinctly grained. The spire is conical. Its lateral outlines are concave on the upper part. The apex is acute. The sutures are scarcely discernible until the body whorl is reached. There are 8-9, flat whorls, but the last one is slightly convex above, obtusely angular at the periphery, and somewhat convex beneath. The subrhomboidal aperture is oblique, pearly and iridescent within. The nacre shows by folds the positions of the principal lirae of the outside. The oblique columella is arcuate, and pearly. The basal and outer lips are crenulated at the edge.[5]

Distribution

• New Zealand

References

1. http://clade.ansp.org/obis/search.php/70458 OBIS Indo-Pacific Molluscan Database, Data as of 2006-05-17, accessed 14 September 2009.
2. Bruce A. Marshall, A revision of the Recent Calliostoma species of New Zealand (Mollusca:Gastropoda:Trochoidea; The Nautilus v. 108 # 4 (1994-1995)
3. Hutton F. W. (1875). "Description of three new Tertiary Shells, in the Otago Museum". Trans. Proc. N.Z. Inst. 7: 458, plate XXI
4. WoRMS (2010). Calliostoma selectum (Dillwyn, 1817). 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=467256 on 14 December 2012
5. Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia

External links

• "Calliostoma (Maurea) selectum". Gastropods.com. Retrieved 15 January 2019.

Further reading

• Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1