Odostomia metcalfei
| Metcalfe's pyramid shell | |
|---|---|
 | |
| Shell of Odostomia metcalfei (holotype) | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Family: | Pyramidellidae |
| Genus: | Odostomia |
| Species: | O. metcalfei |
| Binomial name | |
| Odostomia metcalfei Pritchard & Gatliff, 1900 | |
| Synonyms | |
| |
Odostomia metcalfei, common name Metcalfe's pyramid shell, is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.[1]
Description
The length of the shell reaches 2.5 mm, its diameter about 1.25 mm; the aperture measures 1 mm in length.
(Original description) The shell is small and biconic, with a spire that extends longer than the aperture and culminates in a somewhat obtuse apex. The heterostrophic embryo comprises about one and a half whorls, with an immersed tip; the extremely obtuse apical portion is markedly smaller than the succeeding whorl, so that in lateral view it presents a distinct, broad tabulation at this part of the shell.
The shell contains three to four somewhat convex whorls, separated by a distinct suture. Just below and running parallel to this suture lies a narrow margin, and there is a slight tendency toward tabulation along the suture. The whorls are faintly marked with longitudinal striations, while the shell itself remains thin, translucent, and milky white in colour.
The aperture is ovate and slightly effuse anteriorly. On the columellar side, at about the middle of the aperture, there is a single strong, tooth-like plait, and the outer lip is thin.[2]
Distribution
This marine species is endemic to Australia and occurs subtidally off Victoria, South Australia, and Tasmania.[3]
References
- ↑ Marshall, B. (2015). Odostomia metcalfei. Accessed through: World Register of Marine Species at http://marinespecies.org/aphia.php?p=taxdetails&id=722631 on 2015-04-16
- ↑ Pritchard, G.B. & Gatliff, J.H. 1900. On some new species of Victorian mollusca, No 4. Proceedings of the Royal Society of Victoria 13(1): 131-138, pls 20-21
This article incorporates text from this source, which is in the public domain. - ↑ Gbif.org: distribution
- Pritchard, G.B. & , J.H. 1900. Catalogue of the marine shells of Victoria. Part IV. Proceedings of the Royal Society of Victoria 13(1): 139-156
- May, W.L. 1921. A Checklist of the Mollusca of Tasmania. Hobart, Tasmania : Government Printer 114 pp.
- May, W.L. 1923. An illustrated index of Tasmanian shells: with 47 plates and 1052 species. Hobart : Government Printer 100 pp.
- Cotton, B.C. & Godfrey, F.K. 1932. South Australian shells (including descriptions of new genera and species). Part 6. South Australian Naturalist 14(1): 16-44
- Cotton, B.C. 1959. Chapter 5. South Australian Gastropoda. Marine, Estuarine, land and Freshwater. pp. 332–448 in Cotton, B.C. South Australian Mollusca. Archaeogastropoda. Handbook of the Flora and Fauna of South Australia. Adelaide : South Australian Government Printer 449 pp.
- Macpherson, J.H. & Gabriel, C.J. 1962. Marine molluscs of Victoria. Melbourne : Melbourne University Press & National Museum of Victoria 475 pp.
- Grove, S.J., Kershaw, R.C., Smith, B.J. & Turner, E. 2006. A Systematic List of the Marine Molluscs of Tasmania. Launceston, Tasmania : Queen Victoria Museum and Art Gallery 120 pp.
External links
- Nofroni, I., Renda, W. & Vannozzi, A. (2023). "A glance at the Middle East: Notes on the genus Megastomia from the Arabian Peninsula, with the description of three new species (Gastropoda: Pyramidellidae)". Bollettino Malacologico. 59 (2).
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