508 RAPIOPALMA. 



A single species : Radiopalma dichotoma Brun., found in the fossil deposit 

 of Moron (Spain) and drawn in the text (fig. 257) after my photographs. 



I have in my possession a similar form, but with larger cells, and plaits 

 more regularly marginal, coming from Chalky Mount, Barbadoes (Weissfiog). 

 Awaiting a more minute examination I give it the name of R. Branii, H. V.H. 

 I am tempted to believe that the Radiopalma are only external layers of 

 valves of some form that has not yet been identified. 



