Home|Search|Identify|Taxonomic tree|Quiz|About this site|Feedback
Developed by ETI BioInformatics
Characteristics, distribution and ecology
Taxonomische classification
Synonyms and common names
Literature references
Images, audio and video
Distribution map
Links to other Web sites

(Montagu, 1803)

Description (shell):
Shell similar to Raphitoma linearis . Readily distinguished by pattern of shell sculpture; costae opisthocline, narrower, and more numerous (18-19 on penultimate); spiral striae more numerous (>20 on last whorl, >7 on penultimate whorl), interacting with costae to produce prominent bulbous tubercles. Aperture narrower than in R. linearis , with 10-11 internal teeth in older shells.

Size:
Up to 20 x 8 mm.

Colour:
Reddish-brown or purplish, often with white outer lip; throat and siphonal canal not white (R. purpurea).

Animal:
Eyes about two-thirds of way up tentacles; foot white with chalk-white speckles, siphon purplish.

Habitat:
On sand, gravel, and stony bottoms at 10-100 m; at LWST, among weeds (including Zostera ), under stones, and in rock-crevices on shores in southern British Isles. Not common.

Distribution:
Distributed from Mediterranean to northern Norway (Distr. R. purpurea).

Raphitoma purpurea