Note 66 — Class—CRUSTACEA. Sub-Class—CIRRIPEDIA. (continued 7)

Mr. Hancock, in his admirable account of his burrowing Cirripede, Alcippe lampas, (‘Annals of Nat. Hist.,’ Nov. 1849, p. 313,) came to this conclusion regarding the cup of Lithotrya, and hence was led to think that this genus did not form its own burrows, but inhabited pre-existing cavities. I am much indebted to this gentleman, who has been so eminently successful in his researches on the boring powers of marine animals, for giving me his opinion on several points connected with the present discussion.