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opercular series contains four bone
segments known as the preoperculum,
suboperculum,
interoperculum and operculum. The
preoperculum is a crescent-shaped...
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rugose texture on the
dermatocranium and ch**** bones, the
absence of the
suboperculum and the spiracular, and
reduction or loss of the
descending process of...
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immediately in
front of the main fin.
There is also no
anterior spine in the
suboperculum. In the
males of this
genus the
upper and
lower pairs of
denticular teeth...
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distinguished from
other genera of
Oneirodidae by the long and
slender suboperculum which has a
tapering point at its
upper end, and by
having a slightly...
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against its rear edge it can be oval or bell shaped. The
spines on the
suboperculum are short,
robust and have many points. The head is
higher than the flattened...
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double head, the rear
margin of the
operculum is
deeply incised, the
suboperculum is thin and long with its
lower end
being elongated and
rounded and the...
- a
large dark
blotch on the
operculum but
there is no dark
blotch on
suboperculum or on the
spiny part of the
dorsal fin. This
species reaches a maximum...
- at
their bases, and have two
spines at
their tips. The
tubercles on
suboperculum are
divided into four
smaller spines, two of
these are
directed forwards...
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meaning "front", an
allusion to the
swollen anterioor margins on the
suboperculum and
under the eye.
Halieutopsis tumifrons has 5 or 6 soft rays supporting...
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spore discharge in W. americana, such as the ascus, the operculum, the
suboperculum. The spore-bearing cells, the asci, are 330–400 μm long by 16–20 μm wide...
