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

by Charles Darwin

[Plate V., figure 2 f.]

[Plate V., figure 2 g.]

[Plate V., figure 2 h.]

[Plate V., figure 2 i.]