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vibracula

  • plural
    of vibraculum.
    vibraculum
    noun
    any of the modified polyps on the surface of certain bryozoan colonies, having a long, whiplike appendage that clears away debris.

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The remarkable feature of this genus resides in the vibracula, which here appear to attain their utmost development.

From Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 1 by John MacGillivray

Polyzoarium entirely divided into ligulate dichotomous bi or multiserial branches; back nearly covered by large vibracula; avicularia sessile.

From Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 1 by John MacGillivray

When a branch was placed on its face, the vibracula became entangled, and they made violent efforts to free themselves.

From The Origin of Species by means of Natural Selection, 6th Edition by Charles Darwin

In many cases the vibracula have a grooved support at the base, which seems to represent the fixed beak; though this support in some species is quite absent.

From The Origin of Species by means of Natural Selection, 6th Edition by Charles Darwin

Besides the avicularia, the polyzoa possess curious organs called vibracula.

From The Origin of Species by means of Natural Selection, 6th Edition by Charles Darwin

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