Lioglyphostoma adematum is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.
The length of the shell varies between .
This marine species occurs off Guadeloupe and in the Atlantic Ocean off Northern Brazil; fossils have been found in Pliocene strata of the Bowden Formation, Jamaica; age range: 3.6 to 2.588 Ma.