-
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...
-
structures belong to the
third neanic substage, the second, or unicarinate,
substage thus
occupying the
greater part of the
neanic stage. The discontinuation...
- not
exhibit the
disproportionate growth rates between the
nepionic and
neanic stages observed in that genus. The
aperture is narrow,
resulting from the...
- suture.
Subsequent whorls are more
closely and
sharply rib-striated. The
neanic whorls are keeled, with the
carina visible above the
suture on some whorls...
- 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...
-
keeled medially. This keel
develops into a
strong feature in the
brephic and
neanic stages, but on
approaching the
adult is not so
clearly marked. The s****...
-
violaceous hue with
light striae, a
purplish apex, and
yellowish earliest neanic whorls, with a
purple interior. In some cases, the s****
surface appears...
- whorl, the ribs
become finer and shorter,
eventually disappearing. The
neanic and
subsequent whorls are
finely marked with
growth lines, and a peripheral...
-
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...
-
fusiform s****
contains eight whorls. In the
young growth is flat. In the
neanic and
ephebic stages the
whorls are
subangulately convex,
rapidly increasing...
