1. _Genus_--LEPAS, _Linn._ (Darwin, 'Lepadidæ,' p. 67.)
Valvæ 5, approximatæ; carina sursùm inter terga extensa, deorsùm
aut furcâ infossâ aut disco externo terminata; scuta subtriangula,
umbonibus ad angulum rostralem positis.
A Monograph on the Sub-class Cirripedia (Volume 2 of 2) The Balanidæ, (or Sessile Cirripedes); the Verrucidæ, etc., etc. · 第 206 / 417 题