CTENOPHORA 



Classification. — 



Class. 

 I. Hydrozo'a. 

 II. Scyphozo'a. 



III. Actinozo'a. 



IV. Ctenoph'ora. 

 3 



33 



Examples. 

 Hy'dra, Hydroid Colonies. 

 Jelly-fishes. 



Sea Anemones and Coral Polyps. 

 "Comb-jellies." 



