6. _Pyrgoma milleporæ_, Darwin. ('Balanidæ,' p. 367, Tab. 13, fig. 2.)
P. testæ orificio angustè-ovato; vaginâ obscurè purpureâ: scuto multùm
elongato: tergo triangulo, convexo, calcare nullo.
_Hab._--In Archip. Philippino.
A Monograph on the Sub-class Cirripedia (Volume 2 of 2) The Balanidæ, (or Sessile Cirripedes); the Verrucidæ, etc., etc. · 第 269 / 417 题