408 



RADIATA. 



ORDER III. CORALLIFERI.* 



MADREPORES : 1. A street ?, 2. Agaricia Undulata, 3. Meandrina 



Cerebriformis. 



THE Polypes of this Order, comprising very many 

 species, agree in general with those of the former 

 two in their individual structure, but are so united 

 together in societies, as to form a common mass, 

 nourished and increased by the efforts of all. This 

 substance does not, however, appear to have, as has 

 been maintained, any sensation, or power of com- 

 municating sensations from one Polype to another, 



* KoAX/ov, korallion, coral, and, Qigu, phero, to bear. 



