• WordNet 3.6
    • n Balanus type genus of the family Balanidae
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Century Dictionary and Cyclopedia
    • n balanus The typical genus of sessile cirripeds of the family Balanidæ; the acorn-shells or sea-acorns, called barnacles, except in Great Britain, where the pedunculated Lepadidæ have that name. B. tintinnabulum is the representative species. The shell consists of 6 plates, with an operculum of 4 valves. Colonies are to be found on rocks left dry at low water, on ships, on timber, on lobsters and other crustaceans, and on the shells of conchifers and other mollusks. They differ from the members of the genus Lepas in having a symmetrical shell and in being destitute of a flexible stalk. They pass through a larval stage of existence, at which period they are not fixed, but move about by means of swimming-feet, and possess large stalked eyes, both feet and eyes disappearing when they attach themselves to their final place of repose.
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Chambers's Twentieth Century Dictionary
    • Balanus . See Acorn-shell.
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In literature:

I never thought that I should live to hear of a hybrid Balanus!
"The Life and Letters of Charles Darwin, Volume II (of II)" by Charles Darwin
Linnaeus gives no type to his genus Lepas, though L. balanus comes first.
"More Letters of Charles Darwin" by Charles Darwin
Balanus, questions of nomenclature.
"More Letters of Charles Darwin Volume II" by Charles Darwin
The First Part contains Anatifa and Balanus, and was published in 1789.
"A Monograph on the Sub-class Cirripedia (Volume 1 of 2)" by Charles Darwin
Their names were Gerald, Balanus, Berikertus and Hubritanus or Hulbritanus.
"Insula Sanctorum et Doctorum" by John Healy