52 



GUIDE TO THE CORAL GALLERY. 



Case 4. 



smaller dactylopores, can be seen scattered over the surface of these 

 corals. A section shows in the cavities of the calicles series of 



Fig. 13. 



Antennuliiria antenmna. A. Natural size. b. Joint of stem with branchlets magni- 

 fied ; (I, polyp ; fc, nematophore ; c, reproductive capaule. c. Branchlet highly 

 magnified (lettering as before); after Allman. 



parallel floors (tabulae) marking successive stages of growth activity. 

 Millepora is richly provided with thread-cells, which retain their 



