Plegma duponti
| Plegma duponti | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
_-_Helicarionidae_-_Mollusc_shell.jpeg)
Housing of Plegma duponti in the Naturalis Museum in Leiden . |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Plegma duponti | ||||||||||||
| ( Morelet , 1866) |
Plegma duponti ( synonyms : Helix duponti , Nanine sulcifera , Helix sulcifera ) is an extinct Landlungenschneckenart that on Mauritius endemic was. The art epithet honors the French natural food dealer and entomologist Richard Henry Puech dit Dupont (1798–1873).
features
The case of Plegma duponti had a diameter of 34 to 48 mm and a height of 29 to 39 mm. It was large, tightly shelled, conical, spherical, strongly widened across the board and had 4.5 turns. The sculpture consisted of pronounced spiral furrows. The mouth was wide and the lip somewhat thickened, but not turned over. The color was a solid brown-red or gray.
status
In 1866, Pierre Marie Arthur Morelet described Plegma duponti (under the name Helix duponti ) as common in the subfossil deposits confined to the mountains southeast of Port Louis . In the following period, further remains were collected in subfossil deposits in large parts of Mauritius. One specimen collected by David William Barclay (1804–1888) on Montagne-au-Riz and illustrated by Henry Adams in 1868 as Nanina sulcifera is in such good condition that it is believed that the species may not have appeared until the 19th century . Century died out.
literature
- Owen Lee Griffiths, Francois Benjamin Vincent Florens : A Field Guide to the Non-Marine Molluscs of the Mascarene Islands: (Mauritius, Rodrigues and Reunion) and the Northern Dependencies of Mauritius , Bioculture Press, Mauritius, 2006, p. 129
Individual evidence
- ^ Wilhelm Kobelt : The Heliceen family. Fourth Division, 1897, p. 730
- ↑ Colimacea in insula Mauritii de novo reperta . In: Revue et magasin de zoologie pure et appliquée (= 2 ). tape 18 , 1866, pp. 62-63 ( biodiversitylibrary.org ).
- ^ Henry Adams: Descriptions of some new Species of Land and Marine Shells. Proceedings of the Scientific Meetings of the Zoological Society of London for the Year 1868, pp. 15-16 (Plate 9, Figure 12)