Nectocalyces sentence example

nectocalyces
  • k, Nectocalyces (swimming bells).
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  • 70); no nectocalyces or bracts; appendages all on the lower side of the pneumatophore arising from a compact coenosarc, and consisting of a central After C. Gegenbaur.
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  • Without pneumatophore, with one, two, rarely more nectocalyces.
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  • With an apical pneumatophore, not divided into chambers, followed by a series of nectocalyces or bracts.
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  • With a very large pneumatophore not divided into chambers, but without nectocalyces or bracts.
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  • Swimming-bells, termed nectocalyces or nectophores (fig.
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  • A given cormus may bear one or several nectocalyces, and by their contractions they propel the colony slowly along, like so many medusae harnessed together.
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  • Three families: (I) Monophyidae, with a single nectocalyx; examples Muggiaea, sometimes found in British seas, Sphaeronectes, &c.; (2) Diphyidae, with two nectocalyces; examples Diphyes (fig.
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  • 72), Praya, Abyla, &c.; and (3) Polyphyidae, with numerous nectocalyces; example Hippopodius, Stephanophyes and other genera.
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