Description. Shell very small, subcylindrical, very fragile, pupoid, strongly reticulated, the last whorl larger than half of the heigth. Protoconch is difficult to define in number of whorls because it is poorly delimited from the teleoconch; diameter of the nucleus of the protoconch is about 60 urn. Immediately, a sculpture formed by axial ribs appears, numbering about 21 on the first whorl; these ribs are crossed by about 11 spiral cords, smaller than the ribs and visible only in the intervals. Teleoconch of about four convex whorls increasing slowly, and with incised suture. The axial ribs are more numerous in the subsequent whorls, being about 44 in the second one, and more than 70 on the last whorl. These undulating ribs are of size similar to the intervals, and on the last whorl are crossed by spiral cords of similar size, numbering about 25, with about 10 more into the umbilicus which is narrow and curved. Aperture ovoid, columella curved, external lip sharp. Soft parts unknown.
Dimensions: the holotype is 0.93 mm in height. The paratypes are of similar size, some of them a little more juvenile. Holotype 0.93 mm in height, in Museo Nacional de Ciencias Naturales of Madrid (15.05/46466).
Type locality Dakar. Senegal.

The generic assignation of the species is based on the similarity of the shell with the European Cima cylindrica (Jeffreys, 1856), which have a similar form and sculpture, but this sculpture is less prominent, the protoconch being almost smooth at the beginning.
C. apicisbelli spec. nov. can be differentiated from other species of the genus by its sculptured apex, and by the very numerous and evident undulating axial ribs.