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ALCYONARIA 



4. Section of undecalcified ccenenchyma of Alcyonium made by hand ; spicules ; polyp tubes 

 with mesenteries [and ova]. 



5. Corallium rub rum. Axial skeletal rod of red coral, covered by soft ccenenchyma; polyps 

 extended. 



6. Pennatula (sea feather). Axis of colony containing a hard skeletal rod, and without branches 

 on its basal portion ; feather-like branches with polyps along one edge. 



