top shell with a pearly interior,
no nodes on columella, umbilicus closed, has tan or brown, beaded
spiral ridges on a white background. The base of the body
nearly flat, and the sutures between whorls are not deeply
The animal is cream colored with brown spots. Periostracum is
gray, brown, or olive-green.
How to Distinguish from
Similar Species: C.
ligatum has unbeaded spiral ridges and clearly
convex whorls. C.
annulatum also has beaded spirals but the lower
spiral on each
whorl is blue or purplish.
Depth Range: Subtidal
and Fairbanks, 1966
General Notes and
Observations: Locations, abundances,
unusual behaviors, etc.: I have found this species
in benthic trawls at around 100 m depth. It is apparently not
found intertidally since it is not mentioned in Kozloff's Seashore
It is not a species listed as present in Central or Southern California
either, at least intertidally.
The image above and below are of an individual from a benthic trawl
in the San Juan Channel, about 100 m depth, July 2006.
Authors and Editors of Page:
Dave Cowles (2004): Created original page