- an
anterior peristomial lip
which is
short and narrow. An outward-curving
peristomial disc is ****ociated with the peristome. The
peristomial disc, which...
- Most sea
urchins possess five
pairs of
external gills attached to the
peristomial membrane around their mouths.
These thin-walled
projections of the body...
- in the
centre of the oral surface,
where it is
surrounded by a
tough peristomial membrane and
closed with a sphincter. The
mouth opens through a short...
- fused,
either completely distinct, or
comprising a
joint structure of a
peristomial ring and a
tentacular crown.
Prostomium Pygidium Beesley, Pamela; Graham...
- to 92 ft) in
Bahia Culebra. It is
characterised by
possessing a
first peristomial annulation that
extends as a
dorsal crest over the
second annulation...
- substratum.
Around this aperture, the
pellicle is
reflexed around forming a
peristomial collar.
Other notable features are flat and
irregular shaped mitocondrial...
- serration. Its
maxillae exhibits 7 free denticles. It also
counts with two
peristomial segments without setae. Its
parapodia has
dorsal ventral cirri, with...
- are that the
former has
pharyngeal terminal papillae and a
papillose peristomial membrane,
while the
latter lacks them. Pleijel's
interpretation in 1998...
-
several key structures: palps, antennae, a
prostomium with a mouth,
peristomial cirri, and the
characteristic spiraled branchiae that set the
genus Diopatra...
- Its
maxillae has 7
pairs of free denticles. It also
counts with two
peristomial segments without setae, its
parapodia being uniramous and
showing short...
