Umbilibalcis

Umbilibalcis is a genus of very small ectoparasitic sea snails, marine gastropod mollusks or micromollusks in  the Eulimidae family.

Species
Species within the genus Umbilibalcisinclude :
 * Umbilibalcis crassula Bouchet & Warén, 1986
 * Umbilibalcis lata (Dall, 1889)
 * Umbilibalcis subumbilicata (Jeffreys, 1884)