Dillwynella modesta

Dillwynella modesta is a species of sea snail, a marine gastropod mollusk in the family Skeneidae.[1][2]

Dillwynella modesta
Original drawing with an apertural view of a shell of Dillwynella modesta
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Skeneidae
Genus: Dillwynella
Species:
D. modesta
Binomial name
Dillwynella modesta
(Dall, 1889)
Synonyms[1]
  • Teinostoma (Dillwynella) modesta Dall, 1889

Description

The height of the shell attains 3 mm, its diameter 4 mm. The smooth, whitish shell is covered with an extremely thin epidermis which rises in microscopic blisters. The rounded, depressed spire has a distinct suture. It consists of three or four whorls. The sculpture shows faint lines of growth except on the base where a single rounded riblet or carina bounds a somewhat concave lunate space outside of the polished columella. The thin, sharp outer lip has a moderate callus on the body. The thick columella is polished. The translucent operculum is yellowish and contains about five turns. The rounded aperture has a slight angle behind.[3]

Distribution

This marine species occurs off St Lucia, Caribbean Sea, at depths between 413 m and 805 m; in the Atlantic Ocean off southeastern Brazil.[2]

References
  1. Bouchet, P. (2012). Dillwynella modesta (Dall, 1889). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581652 on 2012-09-01
  2. Kunze T. (2011) Dillwynella voightae new species, a new skeneimorph gastropod (Turbinidae) from the western Atlantic and a new record of Dillwynella modesta (Dall, 1889). The Nautilus 125(1): 36-40. (24 March 2011)
  3. 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
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