EXPLANATION OF PLATE LXIII. 



Fig. L — Small portion of colony of Mopsea Jlabellum, sp. no v. 



Nat. size. 

 Fig. 2. — Axis of same, x 3. 

 Fig. 3. — Enlargement of polyps, x 12. 

 Fig. 4. — Spicules of Mopsel.ta textiformis, Lamarck. 

 Fig. 5. — ^Axis of same, with a few patclies of ccenencbyma. Nat, 



size. 



