- technique. The eggs have a
characteristic shape: they are oval with a thick,
mamillated s**** (covered with
rounded mounds or lumps),
measuring 35–50 micrometer...
-
pattern of
evenly spaced white flammules. The
protoconch is
large and
mamillate. The periostra**** is thin, translucent, and smooth,
featuring a row of...
-
slightly more
opaque than the rest of the whorls. The apex is
minutely mamillate. Whorls: Four,
small whorls,
barely convex on the spire. The body whorlis...
-
below it. On the base are six
simple cords. The
protoconch is horny,
mamillate,
three and a half whorled, the
larger sculptured with a
raised network...
- delicate,
white s****
contains 5 whorls,
including a
rather blunt scarcely mamillate protoconch of 2
convex whorls, with 7
spiral lirae,
ending abruptly at...
-
blunt at the apex,
roundly much
contracted at the base. The
protoconch is
mamillate and
consists of 2¼ whorls. The s****
contains eighteen round axial ribs...
- polished, with waxy feel;
aperture narrow;
protoconch very large, rounded,
mamillate; s****
color varying from pure white(paratype, Key collection) to pale...
- noticeably: B.
etayana forms dissolving goniocysts with
smooth to
slightly mamillate surfaces that
allow chloroplasts to be
clearly visible under microscopic...
- mentioned. The
first three whorls form, at the
posterior end, a
small mamillate protoconch. The body
whorl constitutes almost the
entire length of the...
- slender, tapered, with sharp-angled shoulder;
spire flattened with
elevated mamillate protoconch; body
whorl smooth, polished, with 10
spiral cords around anterior...
