Rissoellidae

Rissoellidae

Rissoellidae are a family of minute sea snails, marine gastropod molluscs in the order Heterostropha.

Distribution

World-wide but sporadic.

Description

These shells are minute, fragile, glass-like, of simple elongate-ovate shape, found mostly living on seaweed. The animal is distinctive in having a pair of tentacle-like processes, additional to a pair of true tentacles. The eyes are in the middle of the bases of the tentacles. The operculum is basically oval, but shaped to fit the aperture, and there is a moderate to strong medial peg that is buttressed on the inner face. The radula is variable, and the teeth are relatively large, a central, a lateral, and one, two, or no marginals.

Genera within the family Rissoellidae

References

Search another word or see Rissoellidaeon Dictionary | Thesaurus |Spanish
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature