COKALS AND COKAL MAKERS. 



41 



soldier crab. The shell finally becomes dissolved away — how, 

 it is not known— by the growing Zoanthid ; but the crab holds 

 on to its house, although at the expense of transporting wher- 

 ever it goes a colony of flowering polyps. I'he polyps are but 

 partly expanded in figure i, and wholly so in figure 2. 



i^<;r7!VWir 



ANTIPATHES AKIiOREA, D. 



The animals of the Zoanthus tribe have broad, radiated 

 disks, with an edging of short tentacles, in one or more rows. 

 Although not secreting coral, the mucus of the surface in some 



