1. Family BALANIDÆ, (or Sessile Cirripedes).
_Cirripedia without a peduncle; scuta and terga furnished with
depressor muscles; other valves united immoveably together._
A Monograph on the Sub-class Cirripedia (Volume 2 of 2) The Balanidæ, (or Sessile Cirripedes); the Verrucidæ, etc., etc. · 第 40 / 417 题