1. _Genus_--BALANUS, _Auctorum_. (Darwin, 'Balanidæ,' p. 177.)
Valvæ testæ 6; basis calcarea aut membranacea; valvæ operculares
subtriangulares.
A Monograph on the Sub-class Cirripedia (Volume 2 of 2) The Balanidæ, (or Sessile Cirripedes); the Verrucidæ, etc., etc. · 第 187 / 417 题