232 



VER^IES: POLYZOA. 



and in one of them there is a hole through which 

 passes a fleshy stalk, by which the shell is attached to 

 the rocks. The word Brachiopod means arm-footed, 

 and is given to these animals on account of the long, 

 fringed arms growing from the sides of the mouth, 



n- 



Fig. 45S. — iurebratula Fig. 45q.— Side Fig. 460. — Brachiopod. 

 — a Bracliiopod. view of Fig. 458. 



Fig. 461. — Lingula — a Brachiopod. Reduced. Philippines. 



and by means of which they make currents in the 

 water and thus secure their food. 



The Lingula has a very long fleshy stem and so 

 shows its relation to the Worms more plainly than the 

 rest. The shell of this animal is found as a fossil in the 

 most ancient rocks which contain traces of animal life. 



POLYZOA. 



These are very small, or minute, animals related to 

 the Worms, growing in clusters upon shells, rocks, and 

 other objects, both in the sea and in fresh waters, and 

 which look very much like Polyps. They are often, 

 called Bryozoa, 



