- 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)...
- by a
callous deposit) and perspective. The
margin is crenulated. The
multispiral operculum is corneous. The
interior has a very thin
nacreous layer. Species...
- the
margin opposite the aperture. The
operculum is small, dark brown,
multispiral, and chitinous. Size range: 45 to 129 mm diameter. This
species is found...
-
nucleus slightly excentric,
final three whorls evenly expanding in
multispiral pattern.
Height 6.5 mm,
width 9 mm. This
marine species occurs in the...
- and
attached to the body
whorl for a
short length. The
operculum is
multispiral, horny, and hispid, with a soft,
calcareous outer layer formed of pearly...
-
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...
- externally. The
aperture is round. The
operculum is present,
horny and
multispiral. The
nearest ally,
Circulus smithi Bush, 1897 (synonym:
Cyclostrema trlcarinata...
-
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...
