37 



Scientific name. 



Palmatus, 



Spathuliferus, 



Anacanthus, 



Plicatus, 



Family 2dL Having palmated or foliated ramifications. 

 Locality. Scientific name. Locality. 



Scientific name. 

 Ducalis. 



DIVISION II. Shell unarmed. 

 Family 1st. Upper valve longitudinally striated. 

 Indian Seas. 



Family 2ci. Valves longitudinally plaited 

 West Indies. 



