PLATE LXXIV. 



PIG. 



1. MIMOSELLA GRACILIS, p. 556 ; nat. size. 



2. , portion of a pinna, showing the double 



line of cells ; a single zocecium thrown back. 



3. } stem, showing the internodes and the 



tubular projections to which the cells are jointed. 



4. , terminal portion of a pinna, with buds 



in various stages. 



5, 6. , zooecia, showing the mode of attach- 

 ment. 



7. AMATHIA LENDIGERA, p. 516 ; nat. size. 



8. , one of the sets of cells, with the poly- 



pides expanded. 



9. , portion of zoarium. 



10. , extremity of branch, with cells budding. 



