A Monograph on the Sub-class Cirripedia (Volume 2 of 2) / The Balanidæ, (or Sessile Cirripedes); the Verrucidæ, etc., etc.
Charles Darwin
Страница - 473
Страница - 475
Plate XVIII.
[Plate XVIII., figure 1
a
.]
[Plate XVIII., figure 1
b
.]
