A Shore Crab (Ca->-cinus maenas) parasitized by Sacculina. Natural size. 



(p. 211). 



PL 80. P226. 



1&2. Larval Stages of Sacculina, X35. 



3. Later stage in development of Sacculina, showing branching of parasite 

 over gut of crab. Natural size. (p. 211). 



