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mollusc in the
family Acteonidae. The oval s**** is subcylindrical,
subumbilicate and solid. it is dull whitish, a
little flesh tinted. The
spire is a...
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sublateral nucleus. The
outer surface is convex, white,
rugose and
subumbilicate." This
species occurs in the
Pacific Ocean off Chile. Bouchet, P. (2012)...
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Subtrigonal –
Moderately three-angled.
Subtruncate –
Moderately cut off.
Subumbilicated –
Moderately umbilicated.
Sulcated – Grooved.
Sulcus – A longitudinal...
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diverse range of
growth forms,
including crustose, squamulose, peltate-
subumbilicate, and
microfoliose thalli,
typically characterized by
their bright yellow...
- with flat-topped
turriculate whorls, a
short spire and
siphonal canal,
subumbilicate, with a
single large and
heavy terminal varix and
narrow callus on the...
- color, denticulated, and
strongly striated within. The
columella is
subumbilicated, smooth,
brown or
reddish colored. The
inner lip
shows a
callosity at...
