2.4 mm shell length.
shell of this species is slender with a spiral keel
defining the upper third of each whorl. Fine spiral
striae are confined to the area below the keel and
there is a deep subsutural sinus. Live animals are
cream with the black digestive gland showing through
the apical whorls. The front of the head is lined
columna are rare in beach drift but
moderately common in subtidal sand samples to at
least 52 m (170 ft). Live animals are occasionally
found in shallow rocky habitats. It appears to
be a detritus feeder, beating its vibrissi against
the substrate as it crawls.
and Midway: widespread in the Indo-Pacific;
introduced into the Mediterranean.
photo of a similar shell (from Turkey) on line at
History Museum of Rotterdam is labeled Murchisonella columna
(Hedley, 1907) but placed in the Cimidae. Most other
sources consider Murchisonella
as the type genus of Murchisonellidae.
CP: Kaanapali (canoe club beach), Maui; Oct. 13,