首页 / 官方藏书 / A Monograph on the Sub-class Cirripedia (Volume 2 of 2) / The Balanidæ, (or Sessile Cirripedes); the Verrucidæ, etc., etc. / 31. BALANUS DECLIVIS. Pl. 7, fig. 4 a-4 d.

31. BALANUS DECLIVIS. Pl. 7, fig. 4 a-4 d.

A Monograph on the Sub-class Cirripedia (Volume 2 of 2) / The Balanidæ, (or Sessile Cirripedes); the Verrucidæ, etc., etc. · Charles Darwin · 第 39 / 136 章