MUSEUM OF COMPARATIVE ZOOLOGY. 89 



EXPLANATION OF THE PLATE. 



a. Axis. 



a a. Float. 



/*. Contents of polypite (Alga?). 



c. " Peroniffi." 



d. Extension of bell cavity into the " velarium." 

 c. Projection of the bell margin near an otocyst. 



f. Mouth (opening into a gastric cavity). 



g. Projection into the bell cavity from which the stomach hangs. 

 h. Hood. 



i. Cluster of nematocysts. 



Jc. Annulations formed by rows of nematocysts on the tentacles. 



/. Lips. 



I p. Labial papillae. 



7n. Mouth. 



ml. Marginal lappets. 



m s. Muscular bands. 



oc. Otocj-st. 



/). Polypite. 



/)/(. "Pliacellen." Sexual filaments. 



s. Sexual organs. 



i. Tentacles. 



tt. Tentacular appendages. 



V. Velum. 



Fig. L Rhiznphijsa Eijsenhardtii Geg. 



" l^ ]^rtion of a tentacle of R. Eijsenhardtii. 



" 2. Young of an unknown Jledusa. 



" 3. The same from below. 



4. Larva of Tamoj/a punctata, sp. nov. 



" 5. Older larva of tlie same. 



" 6. View of T. punctata from below 



7. Larva of an unknown Tubularian. 

 7\ The same from below. 



8. Occaniopsis Dcrmudensis gen. et sp. nov. 

 " 9. View of half of tlie same from below. 

 " 10. The same, from larva somewhat older. 



