Clionella bornii

Clionella bornii
Apertural view of a shell of Clionella bornii
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Clavatulidae
Genus:	Clionella
Species:	C. bornii
Binomial name
Clionella bornii (E.A. Smith, 1877)
Synonyms [1]
Clionella sinuata bornii(E.A. Smith, 1877) Pleurotoma (Clionella) borniiSmith E. A., 1877

Clionella bornii is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. ^{[1] [2]}

Description

The size of an adult shell varies between 25 mm and 40 mm.

(Freely translated from the original Latin description) The whitish shell is elongated and subturrited. The shell contains about 8 rather flat whorls (the apex is lacking). Just below the suture it shows a bipartite girdle. The space between the longitudinal ribs has a red color These interstices are as long as the ribs. The oblique ribs are numerous and increase from 11–12 on the early whorls to 18 on the body whorl, extending almost to the siphonal canal. The spiral striae show obsolete grooves and are best seen on the early whorls. The oval aperture has a length of about 1⁄3 the length of the shell. The aperture narrows to a slender point at its top. The very short siphonal canal is slightly curved to the left. The columella is slightly curved in the middle and almost twisted. The outer lip is narrow and shows a rather deep sinus. ^[3]

This species is closely allied to the well-known Clionella sinuata . It differs, however, in being covered with a paler epidermis, in having below the suture a raised girdle formed by a depression or constriction around the whorls, and also in the style of coloration.

Distribution

This marine species occurs between Jeffrey's Bay and East London, South Africa

References

1. Clionella bornii (E.A. Smith, 1877) . Retrieved through: World Register of Marine Species  on 4 April 2010.
2. P. Bouchet; Yu. I. Kantor; A. Sysoev; N. Puillandre (2011). "A new operational classification of the Conoidea (Gastropoda)". Journal of Molluscan Studies . 77 (3): 273–308. doi: 10.1093/mollus/eyr017 .
3. Jeffreys, J. G. 1876. Preliminary report of the biological results of a cruise in the H.M.S. 'Valorous' to Davis Strait in 1875. Proceedings of the Royal Society of London 25: 177-230, pls. 2-4

• E.A. Smith, Diagnoses of new Species of Pleurotomidae in the British Museum; The Annals and Magazine of Natural History: Including Zoology, Botany, and Geology. 1877, vol. xix. p. 499
• Kilburn, R.N. (1985). Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique. Part 2. Subfamily Clavatulinae. Annals of the Natal Museum. 26(2), 417–470.

External links

• "Clionella sinuata bornii". Gastropods.com. Retrieved 22 August 2011.