Prosipho elongatus

Prosipho elongatus
Shell of Prosipho elongatus (specimen at the Smithsonian Institution)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Family:	Prosiphonidae
Genus:	Prosipho
Species:	P. elongatus
Binomial name
Prosipho elongatus Thiele, 1912
Synonyms
Prosipho daphnelloidesA. W. B. Powell, 1958

Prosipho elongatus is a species of sea snail, a marine gastropod mollusk in the family Prosiphonidae, the true whelks. ^[1]

Description

(Original description in German) This species is characterized by its slender form, a long siphonal canal, and a pointed initial whorl. A few poorly preserved shells were recovered from the Gauss Station.

The largest of these, though slightly damaged, measures 10 mm high and 4 mm wide and consists of 4.5 whorls. The first 1.5 whorls are drawn out to a sharp point and are smooth, while the subsequent whorls are covered with spiral ridges. The whorls are relatively flatly curved, with the middle ones featuring seven ridges. These ridges are also present on the underside of the body whorl and extend onto its long, drawn-out process.

Dense, slightly wrinkled growth lines cover the surface. On fresh shells, these lines correspond to distinct folds in the fairly strong, brownish periostracum. The aperture is narrow, gradually transitioning into the siphonal canal at the base. ^[2]

Distribution

This species occurs in the Ross Sea, Antarctica.

References

1. Prosipho elongatus Thiele, 1912 . Retrieved through: World Register of Marine Species  on 17 April 2010.
2. Thiele, J. (1912). "Die antarktischen Schnecken und Muscheln. Deutsche Südpolar-Expedition, 1901-1903, im Auftrage des Reichsamtes des Innern. Wissenschaftliche Ergebnisse. 13". Zoologie. 5 (2). This article incorporates text from this source, which is in the public domain .

• Powell, A. W. B. (1958). Mollusca from the Victoria-Ross quadrants of Antarctica. In: Reports B.A.N.Z. Antarctic Research Expedition, 1929-1931. Series B (Zoology and botany), 6(9): 167-215.
• Engl, W. (2012). Shells of Antarctica. Hackenheim: Conchbooks. 402 pp.

External links

• Egorova, E. (1982). Biological results of the Soviet Antarctic expeditions, 7. Molluscs of the Davis Sea [Егорова Э.Н. Результаты биологических исследований советских антарктических экспедиций. Вып. 7. Моллюски моря Дейвиса (Восточная Антарктика). Explorations of the Fauna of the Seas [Исследования фауны морей]. 26(34): 1-142]