Aforia hypomela

Aforia hypomela is a species of sea snail, a marine gastropod mollusc in the family Cochlespiridae.[1]

Aforia hypomela
Shell of Aforia hypomela (holotype at the Smithsonian Institution)
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Caenogastropoda
Clade: Hypsogastropoda
Clade: Neogastropoda
Superfamily: Conoidea
Family: Cochlespiridae
Genus: Aforia
Species:
A. hypomela
Binomial name
Aforia hypomela
(Dall, 1889)
Synonyms[1]
  • Irenosyrinx hypomela (Dall, 1889)
  • Irenosyrinx tenerrima (Locard, 1897)
  • Mangilia hypomela Dall, 1889 (original combination)
  • Surcula tenerrima Locard, 1897

Description

The length of the shell attains 59 mm.

(Original description) The thin shell has a fusiform shape. Its color is white with a very thin straw-colored epidermis. The 1½ whorls in the protoconch are white and vitreous, polished, nearly smooth with faint spiral lines and lines of growth. The seven whorls of the teleoconch are spirally sculptured with a moderate angulation just behind the periphery of the body whorl, which becomes sharper and peripheral on the earlier whorls. In front of this, the whorls are ornamented with numerous rounded threads, separated by much wider somewhat channelled interspaces. On the upper whorls there are 3-6 of these threads, on the body whorl they extend to the anterior end of the siphonal canal, becoming more crowded anteriorly. Behind the carina the shell is smoother, there are faint spirals, hardly raised, and sparser over the centre of the fasciole than on each side of it. There is no distinct secondary striation. The transverse sculpture consists of faint incremental lines, which rise more or less into little wrinkles at the suture, and sometimes undulate the peripheral angulation on the apical whorls. The suture is distinct. The whorls are moderately full. The aperture is ovate. The siphonal canal is nearly straight, not wide. The thin, simple columella is so twisted as to form a pervious coil extending the whole length of the axis. The outer lip is thin, modified by the sculpture The notch is wide, shallow, half-way between the suture and the carina. The outer lip strongly arched forward.[2]

Distribution

This marine species is found in European waters off the British Isles, in the Atlantic Ocean off West Africa and the Sargasso Sea, and in the Caribbean Sea off Cuba.

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References
  1. Gofas, S. (2016). Aforia hypomela (Dall, 1889). In: MolluscaBase (2016). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=747547 on 2016-07-09
  2. Dall W. H. 1889. Reports on the results of dredging, under the supervision of Alexander Agassiz, in the Gulf of Mexico (1877-78) and in the Caribbean Sea (1879-80), by the U.S. Coast Survey Steamer "Blake", Lieut.-Commander C.D. Sigsbee, U.S.N., and Commander J.R. Bartlett, U.S.N., commanding. XXIX. Report on the Mollusca. Part 2, Gastropoda and Scaphopoda. Bulletin of the Museum of Comparative Zoölogy at Harvard College 18: 1-492, pls. 10-40
  • Bouchet, Philippe, and Anders Warén. "Revision of the northeast Atlantic bathyal and abyssal Turridae (Mollusca, Gastropoda)." Journal of Molluscan Studies 46.Supplement 8 (1980): 1-119.
  • Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca. in: Costello, M.J. et al. (eds), European Register of Marine Species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Patrimoines Naturels. 50: 180-213
  • "Aforia hypomela". Gastropods.com. Retrieved 15 January 2019.
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