A Monograph on the Sub-class Cirripedia (Volume 2 of 2) / The Balanidæ, (or Sessile Cirripedes); the Verrucidæ, etc., etc.

by Charles Darwin

[Plate XIII., figure 6 f.]

[Plate XIII., figure 6 g.]

[Plate XIII., figure 6 h.]

George Sowerby.

[PYRGOMA] : [CREUSIA] .