- broad, low,
flattened spiral lirations,
separated by
channels a
little less in
width than the
lirations.
These lirations grow
gradually wider from the...
-
purplish brown. The
upper half of the
whorls is
concave and
devoid of
spiral lirations,
which exist only on the
lower portion. The s****
contains 13 whorls,...
-
eight fine
spiral lirations,
which are
about half as wide as the
spaces that
separate them. The
spiral sulci between the
lirations are
crossed by quite...
-
subobsolete fine
spiral lirations which lend the
surface a
somewhat reticulated appearance. The
spaces between the
feeble lirations are
marked by numerous...
-
spiral lirations are low, rounded, subequal,
about 12
occur between the
sutures upon the
third and the
penultimate whorls.
These spiral lirations like the...
- They are
marked by
quite regular,
equal and
equally spaced, fine
spiral lirations, of
which 9
occur upon the
first and second, 10 upon the third, and 11...
-
margined in all
cases with dark staining. The
inner aperture with dark
lirations over a rosy
white base colour. The
columella is
midnight black, sometimes...
- the
second much larger,
marked by very
slender riblets and fine
spiral lirations which increase in
strength with the
growth of the whorls. The subsequent...
- is
especially remarkable for the fine yet very
prominent thread-like
lirations encircling the whorls. The
longitudinal ribs are stout, rounded, and equalling...
-
spaces are
about as wide as the ribs,
crossed by
three slender,
spiral lirations on the
anterior half of the
whorls between the sutures. The
sutures are...
