Home > Invertebrates > Shells > Periwinkles > Allochroa bronnii

Updated 2/5/2026

Family Ellobiidae

HAWAII - ENDEMIC

Allochroa bronnii



Mokapu, Oahu , 6 mm
   

HAWAIIAN ALLOCHROA

Uncommon under stones or dark crevices in the splash zone near freshwater seeps.  Moderately stout, with 7.5 whorls and fine spiral and axial striae, aperture narrowing slightly below, yet very similar to Allochroa layardi.  Attains 0.5 inch, 11 mm.  Endemic to Hawaii.  Formerly known as Auricula sandwichiensis.