GENERAL CLASSIFICATION 137 



(3) Polypary vnth an axis partly or wholly stony, aiid covered 

 with a bark-like encrustation. 

 Isis. 

 Coral. 



(4) Polypary wholly stony, and without encrustation. 



Tubipora (organ-pipe coral). Pavonia. 



Lunulitea. Meandrina. 



Ovulites. Astrea. 



Siderolitea. Madrepora. 



Orbulites. Caryophyllia. 



Alveolites. Turbinolia. 



Ocellaria. Fungia (musliroom-coral). 



Eschara. CycloHtes. 



Retepora. Dactylopora. 



MiUepora. Virgularia. 

 Agaricia. 



Obder 3. — -Floating Polyps. 

 A free, elongated, polypary floating in the waters, with a horny or bony axis, 

 covered with flesh that is common to all the polyps ; radiating tentacles around 

 the mouth. 



FuniouUna. Encrinus [Echinoderm. H. E.]. 



VeretUlum. UmbeUularia. 



Pennatula (Sea-pen). 



Oedeb 4. — ^Nakbd Polyps. 

 They have radiating tentacles, often multiple, at the mouth, 

 and form no polypary. 

 Pedicellaria. Zoantha. 



Coryne. Actinia (Sea-anemone). 



Hydra. 



SECOND STAGE OF OBGANISATION. 



No ganglionic longitudinal cord ; no circulatory vessels ; a few 

 special internal organs (either tubes or pores, which draw in water 

 or kinds of ovaries) in addition to those of digestion. 



(Radiarians and worms.) 

 RADIARIANS. 

 (Class III. of the Animal Kingdom.) 



Subgemmiparous animals, free or vagrant; with regenerating bodies 

 and a radiating arrangement of the parts both internal and external and 

 a complex digestive organ ; mouth underneath, simple or multiple. 



No head, eyes or jointed legs ; a few internal organs in addition to 

 those of digestion. 



