''Sukashitrochus dorbignyi'' is a
species of minute
sea snail
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...
, a
marine
Marine is an adjective meaning of or pertaining to the sea or ocean.
Marine or marines may refer to:
Ocean
* Maritime (disambiguation)
* Marine art
* Marine biology
* Marine debris
* Marine habitats
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* ...
gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
mollusk or
micromollusk
A micromollusk is a shelled mollusk which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine mollusks, although in addition, numerous species of land snails and freshwater mollusks also ...
in the
family Scissurellidae, the little slit snails.
[Bouchet, P. (2013). ''Sukashitrochus dorbignyi''. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=492830 on 2013-02-16]
Description
The thin, transparent, glassy, white shell is very small. Its height reaches 1½ mm. It has an ovate shape, and is rather depressed. It consists of 3 rather rapidly increasing
whorl
A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs).
Whorls in nature
File:Photograph and axial plane floral ...
s. It has a very peculiar
sculpture. Under the rather elevated slit fasciole there are two elevated lirae, and the base has concentric lirae and grooves, while the usual growth striae are not lacking. In the example figured in the "Description of Egypt" there is a deep groove
between the keel and the upper of the two spiral lirae. In the examples observed by me (=
W.H. Dall
William Healey Dall (August 21, 1845 – March 27, 1927) was an American naturalist, a prominent malacologist, and one of the earliest scientific explorers of interior Alaska. He described many mollusks of the Pacific Northwest of America, and w ...
) the groove is very shallow, and bears an elevated line. The
umbilicus is moderate. The oblique
aperture is ovate.
G.W. Tryon (1890), Manual of Conchology vol. XII
described as ''Scissurella dorbignyi'')
Distribution
This species occurs in the Red Sea.
References
* Savigny, J-.C., 1817 Description de l'Egypte, ou recueil des observations et des recherches qui ont été faites en Egypte pendant l'expédition de l'Armée française, publié par les ordres de sa Majesté l'Empereur Napoléon le Grand. Histoire Naturelle, p. 339 pp
* Audouin, J.V., 1826 Explication sommaire des planches de Mollusques dont les dessins ont été fournis par M.J.C. Savigny, offrant une exposé des caractères naturels de genres avec les descriptions des espèces. Description l'Egypte . Histoire Naturelle, vol. 2(4), p. 1-339
* Bouchet, P. & Danrigal, F., 1982. Napoleon's Egyptian campaign (1798-1801) and the Savigny collection of shells. The Nautilus 96(1): 9-24
* Yaron, 1983. A review of the Scissurellidae (Mollusca, Gastropoda) of the Red Sea. Annalen des Naturhistorischen Museums in Wien 84B: 263-379
External links
Encyclopedia of Life
World Register of Marine Species
{{Taxonbar, from=Q7635730
Scissurellidae
Gastropods described in 1826