Cylichna biplicata (A. Adams in Sowerby, 1850)
|Maximum size: 10 mm
(extrapolated from shell length).
species has an elongate, straight-sided shell with prominent
spiral striae and a strong columellar fold. In living animals, the
otherwise thin, golden-brown periostracum fills the striae giving the
shell a narrowly banded appearance. The animal is translucent cream.
only two live Cylichna biplicata
were found in sand samples taken in Halimeda
kanaloana beds at depths
of 10-20 m (33-55 ft). However, dead shells suggest that it's probably
moderately common burrowing species at such depths.
Maui: widely distributed in the western & central Pacific.
are present in various mixed lots at the Bishop Museum. It's listed in Severns, 2011 as Eocylichna braunsi (Yokoyama, 1920).
Photo: CP: 6
mm: Airport Beach, Maui; Oct. 22, 1994.
Observations and comments:
1: ( )