Colus jeffreysianus
Species
Photographer / copyright holder
Steve Wilkinson
Specimen collected by Celia Pain collection from St. Brides Bay, Devon. Length = 67mm.
Colus jeffreysianus
<em>Colus jeffreysianus</em> (P Fischer, 1868)
Colus jeffreysianus
Species
Photographer / copyright holder
Steve Wilkinson
Specimen collected by Celia Pain collection from W.Morocco. Length = 60mm.
Colus jeffreysianus
Distribution and status
Norway to Morocco.
The map provided here shows the distribution of the species based on Conchological Society data.
Ecology and behaviour
Lives on sandy or muddy bottoms on the continental shelves
Similar species
- Colus islandicus Siphonal canal longer and narrower, shell more delicate, apex (juvenile shell) very bulbous
- Colus gracilis Apex dilated, periostracum smooth, shell thicker
- Colus holboelli Siphonal canal narrower, periostracum hairy, shell thin, Iceland, Shetland to Norway only
- Colus turgidulus Siphonal canal very short, whorls inflated, suture canalised, shell thinner, Norway to Spitzbergen, Shetland and Faroes
Key identification features
- Apex not dilated as in Colus gracilis and Colus islandicus
- Spiral ridges on body whorl only about 30
- Periostracum hairy, pale yellow
Taxon version key
[NBNSYS0000174669]
Sort order
2920
Taxonomic group
Marine snail
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Shell spindle shaped, up to 60mm high. Up to 8 slightly rounded whorls, making the shell slightly turreted. Apex of the shell sharp. Sculpture of numerous spiral ridges and growth lines. Mouth oval, siphonal canal short and broad. Shell white with a bluish or pinkish tinge, covered by a slightly hairy pale yellow periostracum, the hairs may be worn off. A very variable species.