A Monograph on the Sub-class Cirripedia (Volume 2 of 2) / The Balanidæ, (or Sessile Cirripedes); the Verrucidæ, etc., etc.
Charles Darwin
Страница - 402
Страница - 404
[Plate VII., figure 6
b
.]
[Plate VII., figure 6
c
.]
[Plate VII., figure 7
a
.]
