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. / 18. BALANUS CONCAVUS. Pl. 4, fig. 4 a-4 e.

18. BALANUS CONCAVUS. Pl. 4, fig. 4 a-4 e.

A Monograph on the Sub-class Cirripedia (Volume 2 of 2) / The Balanidæ, (or Sessile Cirripedes); the Verrucidæ, etc., etc. · Charles Darwin · 第 31 / 136 章