-
moderately low spire,
impressed sutures and
whorls rounded with a
supraperipheral sulcus. It has orange-brown and
cream flammulations (flame-like markings)...
-
There is no cord at the
lower edge of the
sutural fasciole,
above the
supraperipheral cord.
There are
eleven somewhat protractive longitudinal folds on the...
- by a weak
extension of the
axial bars that
terminate at the
first supraperipheral keel. The base of the s**** is prolonged, well-rounded. It is marked...
- the
first of
which is
considerably anterior to the
first series of
supraperipheral pits. The
large aperture is
broadly oval. The
posterior angle is obtuse...
-
whorl is
marked by a
spiral sulcus equal to that
which separates the
supraperipheral spiral cord from its
posterior neighbor and, like it, is
crossed by...
-
axial ribs
which practically terminate at the
posterior edge of the
supraperipheral spiral keel. Of
these ribs, 12
occur upon the first, 14 upon the second...
-
rendered strongly angulated by a
spiral keel,
between which and the
first supraperipheral keel two
slender cords are presented. The base of the s**** is well...
- at the
summit is slender, the
other two are
strong and equal, the
supraperipheral one
being about as far
posterior to the
suture as the one at the summit...
- slender,
spiral cord
makes its appearance,
between the
median and the
supraperipheral cord,
which on the last turn,
immediately behind the aperture, attains...
