(Montagu, 1803)

Description (shell):
Shell thin, with five to six tumid whorls; periostracum thin, though thickened patches may line sutures. Shell smooth to the naked eye, but with fine spiral ridges and prosocline growth lines. Umbilicus conical, with a prominent groove or chink bounded on apertural margin by inner lip, and on abapertural side by upturned outer lip; umbilical groove smooth, aperture below drawn out and slightly angular (L. vincta-drawing).

Size:
Up to 10 x 5 mm.

Colour:
Pale horn colour with two to four red-brown bands on last whorl; upper whorls with two colour bands, becoming faint towards apex which is generally purplish. Banding occasionally faint or absent.

Animal:
Snout long, broad, with slender cephalic tentacles arising from base. Foot elongate, with double edged anterior margin; two short, flat metapodial tentacles project from below operculum (L. vincta-animal).

Habitat:
Common on seaweeds, occasionally on Zostera , at LWST, sublittorally to 40 m. Tolerant of salinities down to 20 ä.

Distribution:
A circumboreal species extending south in Europe as far as the Channel and, less frequently, the Atlantic coasts of France. On suitable weed-covered shores on all British and Irish coasts and off Helgoland (Distr. L. vincta).

Kingdom Animalia
Phylum Mollusca
Class Gastropoda
Subclass Prosobranchia
Superorder Caenogastropoda
Order Neotaenioglossa
Family Lacunidae
Genus Lacuna
Species Lacuna vincta

Status in World Register of Marine Species

Accepted name: Lacuna vincta (Montagu, 1803)

Scientific synonyms and common names

Turbo vinctus Montagu, 1803
Trochus divaricatus Fabricius, 1780 non Trochus divaricatus Linné, 1758
Turbo quadrifasciatus Montagu, 1803
Turbo canalis Montagu, 1803
Phasianella bifasciata Brown, 1827
Phasianella cornea Brown, 1827
Phasianella striata Brown, 1827
Lacuna pertusa Conrad, 1831
Lacuna vincta var. fusca Gould, 1841
Lacuna gracilior Metcalfe in Thorpe, 1844
Lacuna albella Lovén, 1846
Lacuna solidula Lovén, 1846
Lacuna labiosa Lovén, 1846
Lacuna carinata Gould, 1846
Lacuna frigida Lovén, 1846
Lacuna arctica Philippi, 1853
Lucuna divaricata; Sneli, 1979

Graham, Alastair F.R.S., 1988. Molluscs: Prosobranch and Pyramidellid Gastropods. Synopses of the British fauna (NS), 2: 1-662.

Hayward, P.J., Wigham, G.D. & N. Yonow, 1990. Mollusca I: Polyplacophora, Scaphopoda, and Gastropoda. In: The Marine Fauna of the British Isles and North-West Europe. (ed. P.J. Hayward & J.S. Ryland). Clarendon Press, Oxford: 628-730.

Poppe, G.T. & Y. Goto, 1991. European Seashells. Vol. I. 352 pp. Wiesbaden/Verlag Christa Hemmen.

Seaward, D.R., 1990. Distribution of the marine molluscs of north west Europe. Nature Conservancy Council.

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