A Monograph on the Sub-class Cirripedia (Volume 2 of 2) / The Balanidæ, (or Sessile Cirripedes); the Verrucidæ, etc., etc.
Charles Darwin
Страница - 418
Страница - 420
[Plate IX., figure 7
a
.]
[Plate IX., figure 7
b
.]
[Plate IX., figure 7
c
.]
