9. _Acasta sporillus_, Darwin. ('Balanidæ,' p. 319, Tab. 9, fig. 9.)
A. testâ purpureo-fuscâ, parietibus intùs fortiter costatis et
reticulatis: testæ valvis carino-lateralibus angustissimis, ad basin
non extendentibus.
_Hab._--In Sooloo Insulis, in Archipelago Indico orient.
A Monograph on the Sub-class Cirripedia (Volume 2 of 2) The Balanidæ, (or Sessile Cirripedes); the Verrucidæ, etc., etc. · 第 258 / 417 题