NOTES ON THE CIRRIPEDIA. 211 



wood all being British species, I infer that the pedunculated 

 Cirripedes had also become fastened, and had continued to 

 grow, in some situation not far from the Liverpool district. 



RHIZOCEPHALA. 



Family. — Peltogastrid^ . 



Sacculina carcini, Thompson. 

 Common, attached to the abdomen of Crabs, in Hilbre 

 Swash, &c. 



