-
structures belong to the
third neanic substage, the second, or unicarinate,
substage thus
occupying the
greater part of the
neanic stage. The discontinuation...
-
several deeply placed basal folds, all
growing continuously from an
early neanic stage. The
peristome is more or less
thickened and expanded, the ends of...
- into well-defined
sulcations as the s**** p****es from the
brephic to the
neanic stages of growth. The s**** as a
whole is elongate, the
aperture being much...
-
indicating the
position of the sinus. The
whorls throughout the
brephic and
neanic stages are flat, with a
deeply impressed suture, but in the
adult stage...
- striate,
characteristic of many
Oahuan species. The
initial one or two
neanic whorls are
coated with a
black or dark
olive cuticle,
adorned with whitish...
- whorl, the ribs
become finer and shorter,
eventually disappearing. The
neanic and
subsequent whorls are
finely marked with
growth lines, and a peripheral...
- structure. The
shape of the
embryonic whorls and the
maculation of the
neanic whorls in many
individuals resemble those of
Amastra badia. The incised...
- smoother, with faint,
distinct growth wrinkles. From the
penultimate to the
neanic whorls, the
whorls are
slightly obliquely angled above the
oblique sutures...
-
violaceous hue with
light striae, a
purplish apex, and
yellowish earliest neanic whorls, with a
purple interior. In some cases, the s****
surface appears...
-
lamella penetrates two whorls. The axis is
imperforate in the
adult and
later neanic stages, but in the half -grown s****
there is a
rather widely open umbilicus...
