Home > Invertebrates > Shells > Cowries > Trivirostra insularum

Created 3/11/2026

Family Triviidae

WEST PACIFIC / HAWAII

Trivirostra insularum

Mokapu, Oahu, 1 foot, 4 mm

 

ISLAND TRIVIA

Uncommon under rocks or rubble deeper than 30 feet.  Extremities produced posteriorly, truncate anteriorly, broad dorsal groove interrupting alternate ribs, aperture nearly straight and strongly curved posteriorly, fossula broad.  Attains 0.3 inch, 8 mm.  Java to Japan, Samoa, and Hawaii.  Formerly known as Trivirostra edgari insularum.