FOSSIL CRINOIDS. 161 



had enough specimens with brachials attached to get an average, this might 

 disappear. The calyx figured is smaller than the English species usually appears, 

 but the other fragmentary specimen has plates fully as large as that. The 

 species is rare, and has only been found at the type locality. 



Horizon and Locality. In the Tombigbee Sandstones of the Upper Cretaceous. 

 Plymouth Bluff, in northern Mississippi. 



