- few
spirals as in Littorina.
subspiral or
scarcely spiral, in
Thiara multispiral or polygyrous:
having many
closely spaced spirals as in
Trochus where...
-
internal s**** is nacreous. They have a brown,
entirely corneous, circular,
multispiral operculum which fits the
aperture snugly. The
operculum is
formed of...
- 129—140 [7]. Ziatdinov, R., Yoshida, N., Kim, T., 2012. ****ing G2
multispiral transition curve joining two
straight lines, Computer-Aided
Design 44(6)...
-
umbilicus is
notably deep. The
operculum is
composed of a
horny material, is
multispiral, and
presents a
concave exterior surface. This
species is
endemic to...
-
shoulder of the s**** is
usually nodulose and the
protoconch is
usually multispiral.
Markings often include the
presence of
tents except for
black or white...
-
distinguished from S. harmulensis, a
closely related species, by
possessing a
multispiral protoconch and
fewer axial ribs. This
species occurs in the Red Sea,...
- locations, to 200 mm off
island and
seamount sites. The
protoconch is
multispiral,
normally eroded except on very
juvenile specimens. The
teleoconch consists...
-
shoulder of the s**** is
usually nodulose and the
protoconch is
usually multispiral.
Markings often include the
presence of
tents except for
black or white...
- externally. The
aperture is round. The
operculum is present,
horny and
multispiral. The
nearest ally,
Circulus smithi Bush, 1897 (synonym:
Cyclostrema trlcarinata...
- black,
showing the
external white markings. The thin,
horny operculum is
multispiral. This
marine species is
endemic to
Australia and
occurs off
South Australia...
