-
irregular black stripes running down the s****. It is
decorated with
unequal subgranose cinguli (spiral ornamentations). The
whorls are plane, but the penultimate...
- The base of the s**** is a
little convex. It is
covered with
about 16
subgranose alternately larger and more
delicate riblets. The
umbilicus is narrow...
- The base of the s**** is
nearly flat with
radiating stripe and five
subgranose lirae. The
aperture is
oblique and rhomboidal. The
white columella is...
- s****
contains six whorls.
Their sculpture shows above the
periphery six
subgranose spiral ribs, elevated,
widely spaced,
increasing in size from the suture...
- shape. The
color is isabella-yellow. It is
sculptured with very fine
subgranose lirae,
about 11 on
penultimate whorl, 40 on the body whorl. The whorls...
-
obliquely striate. The base is a
little convex,
sculptured with 8 flat
subgranose concentric lirae, each one
divided by a
furrow into two parts, alternating...
-
spirally striate. The base has
seven concentric lirae, the
inner ones
subgranose, the
outer ones plain, with a few
coincident striae in the interspaces...
-
Macusi River, Quilimane, E. Africa. This
species is
remarkable for the
subgranose plications on the whorls, and the
brown carina of the body-whorl. It is...
-
about 12
similar ones are on the base; all of them are
crossed and made
subgranose by
closely crowded growth lines. Its
surface is white,
painted with scattered...
- 25 mm. The
conic s**** is imperforate. The five
whorls are
flattened and
subgranosely densely lirate. The
periphery is carinated,
armed with
compressed imbricated...