Cranopsis carinifera: Shell depressed, conical, with curved apex, base oval. Front slope very convex, side slopes moderately convex, posterior slope slightly concave, apex with about one volution, visible at the right side; it is placed at about 9/11 of the total length. Colour white. Sculpture consisting of rather strong radiating ribs and a few intermediate ones, and weaker concentric ridges, making the ribs crenulated and leaving in the interstices subquadrate pits. Perforation oblong, oval, long 0,75 mm, broad 0,33 mm. Slit-fasciole just above the perforation shallow, higher up the shell prominent, so as to make it carinated; the fasciole crossed by rather thin, slightly curved lamellae, which towards the perforation are transformed in scales. Interior while, smooth, but having the appearance, by the transparency of the shell, of being grooved; margin crenulated, slightly elevated at the sides, apex deeply pitted. Long. 5,5 mm., lat. 3,5 mm. , alt. 2,25 mm.

Cranopsis carinifera: Closely allied to Tugali carinata A. Ads. (Proc. Zool. Soc. Lond. 1851, p. 226) but more coarsely sculptured, the number of radiating ribs being only about 34 and a few intermediate ones; ADAMS says: "ornamented with very many simple, close radiating riblets: interstices cancellated"; in the species now under consideration; the ribs are not simple but conspicuously crenulated, the concentric lirae crossing the ribs.

Cranopsis carinifera: Philippines. Sulu Archipellago.