Cyclostrema ocrinum Melvill & Standen, 1901 (misspelling) Cyclostrema ocrinium is a species of sea snail, a marine gastropod mollusk in the family Liotiidae.

The longitudinal riblets are very close and fine, about 26 in number on the five-angled body whorl, that surround the umbilicus at the base being the strongest and most conspicuous.

Regular rows of shining gemmae on the costulae at the point of the angular projections take the place of spiral lirae.

The columellar margin is not reflexed over the umbilicus, which is deep and conspicuous.

[3] This marine species occurs in the Persian Gulf and off Singapore.