iso 



ZOOLOGY. 



chain of aggregated individuals. These singular animals are 

 sufficiently common in the Mediterranean. 



Fig. 435. Biphore (Biphora.)* 



615. The briozoaria, which even very lately have been 

 confounded with the more simple polypi, have the mantle less 



* b, mouth ; a, anus ; m, muscular bands surrounding the great pharyn- 

 geal or respiratory cavity ; br, gills ; e, visceral mass, including the stomach, 

 liver, &c. ; c, the heart. 



