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I.—Notes on new or imperfectly known Chalk Polyzoa
Published online by Cambridge University Press: 01 May 2009
Extract
Zoarium always adherent, rarely large.
Zoæcia pyriform when not crowded, small, the earlier forms larger than the later, but individually very variable; area sub-triangular; a slight internal front wall, occasionally surrounded by a faint line; under the oæcia the rim is very thin, very low, and set distinctly back from the general curve.
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