^ Med 



Can 2 



Fig. 67. — Diagram of a living Millepora, showing Amp., an Ampulla with a medusa 

 enclosed in it; Can. i, the living canals; Can. 2, the dying and degenerating 

 canals ; Cor., the Coralluni ; D., the Dactylozooids ; Ect., the external sheet of 

 Ectoderm; G., the Gasterozooids ; Med., the free swimming Medusae; Tab., the 

 Tabulae. Slightly modified from Moscley and the Cambridge Natural History. 



