A Monograph on the Sub-class Cirripedia (Volume 2 of 2) / The Balanidæ, (or Sessile Cirripedes); the Verrucidæ, etc., etc.
Charles Darwin
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[Plate VII., figure 8
b
.]
[Plate VII., figure 8
c
.]
George Sowerby.
[
BALANUS.
]
