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Family 2c/. Having palmated or foliated ramifications. 



Scientific name. Locality. Scientific name. Locality. 



Palmatus, Ducalis. 



Spathuliferus, 



DIVISION II. Shell unarmed. 



Family 1st. Upper valve longitudinally striated. 



Anacantlnis, Indian Seas. 



Family 2d. Valves longitudinally plaited 

 Plicatus, West Indies. 



