Shell strong, forming a slender, somewhat pagoda-like cone. Colour milky-white and shiny. Embryonic whorls intorted, type C. Teleoconch consisting of about five whorls which are only slightly curved in their upper two-thirds and markedly more convex in the lower third. Suture well-marked. Only growthlines can be detected, which are about orthocline. Outer lip thin, smooth inside. Umbilicus a small chink. There is a moderately prominent tooth on the columella.
Dimensions: H. 2.5-2.7 mm, W. 1.0-1.3 mm; holotype: 2.7 x 1.3 mm.

O. boermani spec. nov. is similar to O. lukisii Jeffreys, 1859, as far as its shiny, milky-white whorls and the flat, intorted topwhorls are concerned. However, the shape of the whorls is quite different and the shells are clearly larger than those of O. lukisii.