200 



Hitchcock's a n a t om y 



364. In some families of the Eiltozoa— the Cystici, the 

 Cestocles and Acanthocepliali — there is no mouth nor proper 

 intestinal canal, but there are vessels for the circulation of 

 nourishment which is received directly through the sides of 

 the body, on the principle of endosmosis. 



