- few
spirals as in Littorina.
subspiral or
scarcely spiral, in
Thiara multispiral or polygyrous:
having many
closely spaced spirals as in
Trochus where...
- 129—140 [7]. Ziatdinov, R., Yoshida, N., Kim, T., 2012. ****ing G2
multispiral transition curve joining two
straight lines, Computer-Aided
Design 44(6)...
-
internal s**** is nacreous. They have a brown,
entirely corneous, circular,
multispiral operculum which fits the
aperture snugly. The
operculum is
formed of...
-
narrow lunar umbilical rimation. The thin
operculum is
orbicular and
multispiral This
marine species occurs in the
Indian Ocean off Mauritius. H. & A...
-
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...
-
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...
-
nucleus slightly excentric,
final three whorls evenly expanding in
multispiral pattern.
Height 6.5 mm,
width 9 mm. This
marine species occurs in the...
- not so
highly developed. The
aperture is round. The
horny operculum is
multispiral. This
species occurs in the Red Sea, Gulf of Oman and the
Persian Gulf...
- dome-shaped
calcareous operculum. This
circular operculum commences as a
multispiral disc, like that of a Trochus, upon the
outer side of
which is deposited...
