Shell shortly fusiform, with long spire, thin, light yellowish red-brown. Nucleus wanting; remaining whorls 11, angularly convex, concave above, lower part with very oblique, somewhat irregular ribs, forming small tubercles on the upper whorls, thick folds on the lower ones; these ribs are not visible in the excavation, their number is 22 on last whorl; the whole shell is covered with fine growth-striae, intermingled with some coarser ones and very numerous, waved, spiral lirae, as well on the ribs as in the interstices and in the subsutural excavation ; last whorl rapidly attenuated below periphery, ending in a rather short, relatively very slender canal, which is nearly white and sculptured with spirals in the same manner as the rest of shell. Aperture oval, with a blunt angle above, peristome thin, fragile, the sinus according to growth-lines probably wide, but not very deep. Columellar margin regularly curved, but suddenly directed to the left, at the entrance of canal, which is contortedly directed to the left; columellar margin with a white layer of enamel, interior of aperture brown, smooth.
Alt. 62 mm. lat. 20 mm: apert. alt. 24,5 mm. apert. lat. 8,5 mm.

This fine species is allied to C. eurina Smith (Ann. Mag. Nat. Hist. Ser. 7, Vol. IV. 1899, p. 259; Zool. III. Investigator. Moll. PI. 9, fig. 4), but the folds are more numerous than in that species, which has a much thicker, straighter canal and a shorter spire, a thickened infrasutural margin. C. margaritae Smith, which I found somewhat similar in shape of spire and ribs, has a considerably longer last whorl, inclusive of canal. This specimen is a smaller, much worn shell, of somewhat doubtful character.