"C. LONGIDENS  n. sp. Pl. 32, figs. 23, 24.

Shell shortly rimate, oblong or subcylindric, very solid and strong;

flesh-colored with nearly white ribs. Sculpture of strong, rather

close, subregular ribs. about 30 in number on the penultimate whorl;

on the last whorl the ribs become lower and split at the periphery,

so that the base is rather finely, irregularly rib-striate. Whorls 9 in

short, to 10½ in long specimens, but slightly convex, the last broadly

rounded below. Aperture ovate, whitish or pale within; peristome

reflexed and recurved, strongly thickened, white or pale reddish­

brown; parietal callus rather heavy. Parietal lamella low and

rather slender but very long, extending inward to the dorsal side,

only slightly curved. There is a low callus or accessory tooth on

the left side of the outer end of the parietal lamella. Axial lamella

small at the aperture, strong within.

Length  24,    diam. 11.5 mill.

Length  22.5, diam. 10.5 mill.

Length  26.5, diam. 10.8 mill.           Cuba: Cabo Cruz (Bland).

This species has a long parietal lamella like the Little Cayman

species. In general external appearance it approaches typical C.