HYDH.E, JELLYFISHES, SEA ANEMONES, CORAL POLYPS 63 



CLASSIFICATION OF THE EXAMPLES 



Branch III — Crelenterata. 

 Class — Hydiozoa. 



Order — HydromedusiT' (Leptolinae). 

 Types of the Order. 



liydrn vinilis — Hydra.. 

 Hydractinia echinata — Hydraetinia. 

 Eucopc species — Campanularian hydroid. 

 Order — Siplioiiophora. 



Physalia arellmsa — Portuguese man-of-war. 

 Class — Scyphozoa. 



Order — Discomedusa;. 

 Type of Order. 



Aiirelia ftaviilida — Jellyfish. 

 Class — Actinozoa. 



Order — Actinaria. 

 Type of Order. 



Metridium 'marginatum — Sea anemone. 

 Order — Madreporaria. 

 Type of Order. 



Madrepora species — Coral polyps. 

 Class — Cteiiopliora. 

 Order — Cydippida. 

 T}'pe of Order. 



Pleiirohrach ia. rhododactyla. 



