Home > Invertebrates > Shells > Triphoridae > Mastonia troglodytes

Updated 8/26/2025

Family Triphoridae

WEST PACIFIC / HAWAII

Mastonia troglodytes

Mokapu, Oahu

RECLUSIVE TRIPHORID

Common under dead coral in shallow water.  Short & inflated, two rows of beaded spirals, suture indistinct, yellow with brown between granules, posterior canal absent, anterior canal short & recurved.  Attains 3mm.  Vanuatu and Hawaii.