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Taxon
Antennella tubulosa (Bale, 1894)
Nomenclature
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Family: HalopterididaeGenus: Antennella
SUMMARY
Considerable variability in thickness of perisarc, length, diameter of internode, and shape of hydrothecae.
Stems to 3 mm long, arising from a thick hydrorhiza. First internode with a proximal constriction, followed by an athecate internode with 1-2 nematothecae and an oblique distal node. Athecate internodes 0.11-0.16 mm long; thecate internodes as described by Bale, 0.27-0.37 mm long, with 1 median nematotheca and 2 scoop-shaped lateral nematothecae.
Hydrothecae long, 5-6 on a stem, proximal part tubular, perisarc thick, adcauline wall 0.25-0.27 mm long; abcauline wall 0.22-0.30 mm long, distal part of adcauline wall more convex than abcauline side. Margin 0.13-0.15 mm in diameter, deeply sinuated, curving up to meet produced adcauline wall.
Colour: yellow.