Description. Shell reaching 17 mm. (about 3/4 inch) in length, attenuated, imperforate and elaborately sculptured. Whorls 8,5 to 9, strongly convex, slightly shouldered and joined. Color a uniform chalky grayish-white. Suture deep and not readily seen as it is covered by the sculpture. Aperture subcircular. Lip margined by a well-thickened varix. Columella short and arched. Axial sculpture consisting of numerous elevated blade-like structures which are grouped to form sinuous costae. These occasionally touch one another leaving openings to the shell surface below. These costae are nearly uniform in height with only a slight indication of a ridge above at the whorl shoulder. Below, the costae thicken somewhat and are slightly elevated to form a basal ridge. Operculum corneous, subcircular and paucispiral.

This species has been found in deep water off southeastern Florida and reaches a maximum size of approximately 19mm. It is grayish-white with approximately 8-9 whorls. There are about 18 costae per whorl which consist of numerous thin blade-like structures clumped together. The costae are very regular and only slightly shouldered. Occasional varices are present. The surface is coarsely sculptured and not pitted. A basal ridge is present, the aperture is round and the outer lip thickened. The operculum is black.
This species can be distinguished from C. dalli by being more coarsely sculptured, by the absence of pits on the spaces between the costae and by the costae that are not shouldered.

Types. Holotype, Academy of Natural Sciences Philadelphia no. 17044-8, rocky reef, off Palm Beach, Florida in 7.3 fathoms. Range. Southeastern Florida.
Records. FLORIDA: off Palm Beach in 50 to 75 fathoms; off Lake Worth in 90 to 100 fathoms (both ANSP and T. McGinty); off Hillsboro Light in U) to 85 fathoms; off Sombrero Light in 90 to 100 fathoms (both L. A. Burry).