10 CLASSES. 



their motions consist in various curvilinear con 

 tractions, contortions and elongations. 

 Examples. Snail, slug, oyster, clam. 



RADIATED ANIMALS 



ARE DIVIDED INTO FIVE CLASSES. 



10. ECHINODERMA, spine covered animals. r fhey 

 have intestinal organs of respiration and for a par- 

 tial circulation. 



Their organized structure is more complicated 

 than that of any other class of this division. 

 Examples. Sea-star or star fish r sea-hedgehog. 



11. INTESTINA, animals inhabiting the bodies of 

 other animals. They have no discoverable organs 



for respiration or for circulation. 



They are generally oval, long, terete or com- 

 pressed ; with their organs longitudinally ar- 

 ranged. Some have an intestinal canal, others 

 have none. They generally inhabit the intes- 

 tines,* glands, or cellular integuments of othor 

 animals. 



Examples. Tape- worm, hydatids. 



12. ACALEPHAJ circular radiated animals, with- 

 out organs of respiration or circulation. 



They are the largest of the Zophytes. They 

 differ from the class Polypi by the developement 

 of the tissue of their organs. 



Examples. Sea-anemone, zoanthus, kraken? 



13. POLYPI, small gelatinous animals with mouths 

 surrounded by tentaculte* The conducting tube^ 

 passing into the stomach) simple or passing down in 

 the form of vessels 



* Cuvier says, the most efficacious vermifuge is animal oil mixed 

 with oil of tnrpentine. 



