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

by Charles Darwin

[Plate XXVI., figure 1.]

[Plate XXVI., figure 2.]

[Plate XXVI., figure 3.]

[Plate XXVI., figure 4.]