SMITHSONIAN INSTITUTION 



On the Crinoid Genus 



SCYPHOCRINUS 



And its Bulbous Root 



CAMAROCRINUS 



(With 9 Plates) 



BY 

 FRANK SPRINGER 



ASSOCIATE IN PALEONTOLOGY, U. S. NATIONAL MUSEUM 



(Publication 2440) 



CITY OF WASHINGTON 

 PUBLISHED BY THE SMITHSONIAN INSTITUTION 



1917 



