Prosipho glacialis

Prosipho glacialis
Shell of Prosipho glacialis (specimen at the Smithsonian Institution)
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Family: Prosiphonidae
Genus: Prosipho
Species:
P. glacialis
Binomial name
Prosipho glacialis
Thiele, 1912
Synonyms
  • Prosipho priestleyi (Hedley, 1916)
  • Trophon priestleyi Hedley, 1916 ·

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

Description

(Original description in German) This small species is distinguished by its peculiar extended initial whorl and its slightly less turreted shape. It is about 5 mm in height and 2.25 mm in diameter. It has five whorls, the first of which is smooth and projects irregularly. The following whorls are moderately convex and have two or three strong spiral ridges, depending on whether the suture is a bit higher or lower. On the underside of the body whorl, one ridge is usually distinct, and a few weaker ones may also be visible.

The columella is straight and moderately long. The aperture is elongated, egg-shaped, with a slightly oblique siphonal canal. The fresh shell is translucent whitish, without a noticeable periostracum.

The radula has a fairly long and narrow central plate that widens towards the front, with three rather equally sized denticles. The lateral plates have three-pronged cutting edges; the innermost prong is quite large and a little longer than it is wide, while the other two are close together, with only their tips separated, the outer one being larger. [2]

Distribution

This species occurs in the Ross Sea, Antarctica;

References

  1. ^ Prosipho glacialis 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). Public Domain This article incorporates text from this source, which is in the public domain.
  • Hedley, C. (1916). Report on Mollusca from elevated marine beds, "raised beaches," of McMurdo Sound. British Antarctic Expedition 1907-9. Reports (Shackleton) - Geology. 2 (5); 85-88.
  • Engl, W. (2012). Shells of Antarctica. Hackenheim: Conchbooks. 402 pp.
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