Cantrainea panamensis is a species of small sea snail with calcareous opercula, a marine gastropod mollusc in the family Colloniidae.Bouchet, P. (2012). Cantrainea panamensis (Dall, 1908). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=512327 on 2013-02-10
Description Shell small, trochiform and stout; spire moderately elevated with evenly convex whorls separated by a distinct, slightly impressed suture. Sculpture of low, flat-topped spiral cords overrun by dense incremental growth lines, producing a subtle, satiny texture; periphery rounded, not keeled. Base gently convex with additional fine spiral threads toward the umbilical region. Aperture subcircular and slightly oblique; outer lip thickened (more robust in fully adult shells) and smooth within; inner lip with a thin nacreous callus that narrows or partly covers the umbilical chink. Columella is short and straight. Operculum calcareous, multispiral (typical of Colloniidae). Maximum shell height ~20 mm.
Distribution This species occurs in the Pacific Ocean from Baja California, Mexico to Panama
References
External links Encyclopedia of Life World Register of Marine Species