224 COPEPOPA. 



Div. 2. Operculata. 

 Fam. 4. B A L A N I D JE. 



BALANUS TINTINNABULTJM (Linne). 



From wreck-timber, Castle Point, Falmouth (W. P. 

 Cocks) ; ships' bottoms at Plymouth (Biol. Lai.}. 



BALANUS SPONGICOLA, Brown. 



" Found by Dr. Leach in a sponge on the Devonshire 

 coast, and is not uncommon" (Captain Broiori). Off Ply- 

 mouth on Pecten opercularis (A. M. N.). 



BALANUS PERFORATES, Bruguiere. 



This is Balanus communis of Pulteney and of Montagu ; 

 and B. Cranchii of Leach and Brown. It is very abundant 

 between tide-marks in Devon and Cornwall, but is a southern 

 species which is not found far up our coasts. 



BALANUS AMPHITRITE, Darwin. 



On ships' bottoms, Plymouth (BioL Lab.), but, like B. tin- 

 tinnabulum, not indigenous. 



BALANUS PORCATUS, E. da Costa. 



Cocks records B. costatus, Donovan, which is a synonym 

 of this species, from deep water at Falmouth; and Spence 

 Bate (" On the Development of the Cirripedia/' Ann. & Mug. 

 Nat. Hist. ser. 2, vol. viii. p. ,324) figures the young as reared 

 by him at Plymouth. 



BALANUS CRENATUS, Bruguiere. 



Plymouth (A. M. N.), and it is probably that species 

 which (Jocks records from Falmouth under the name B. t-n- 

 gosus. 



BALANUS BALANOIDES, Linne. 



Common. Spence Bate (/. c.) figures the young ; and 

 Cocks records from Falmouth its varieties under several 

 names. 



ACASTA SPONGITES, Poll. 



In a sponge off Budleigh Salterton (.1. M. J\\). C-ocks 

 records it from Falmouth on sponge from deep water under 

 the name Acasta Montagui, Leach. 



