CTENOPHORA 



33 



Classification. 



Class. 



I. Hydrozo'a. 

 II. Scyphozo'a. 



III. Actinozo'a. 



IV. CtenSph'ora. 

 3 



.Examples. 



Hy'dra, Hydroid Colonies. 

 Jelly-fishes. 



Sea Anemones and Coral Polyps 

 " Comb-jellies." 



