14 



SPONGES 



Jlyiilnnenut sp. 

 from" Japan, with 

 symbiotic polyps 

 (i\i!ylho<i) growing 

 (m tlie upixT por- 

 tion or tlif root- 

 tuft. (After Agas- 

 siz.) *. 



Fio. IS. 

 liegadrtlla photnix, O.S. (After Agassiz.) J. 



