SMITHSONIAN INSTITUTION 



UNITED STATES NATIONAL MUSEUM 



Bulletin 82 



A MONOGRAPH 

 OF THE EXISTING CRINOIDS 



BY 



AUSTIN HOBART CLARK 



VOLUME 1 

 THE COMATULIDS 



Part 4b.— SUPERFAMILY MARIAMETRIDA (concluded— the family 



Colobometridae) and SUPERFAMILY TROPIOMETRIDA 



(except the families Thalassometridae 



and Charitometridae) 







UNITED STATES 



GOVERNMENT PRINTING OFFICE 



WASHINGTON : 1947 



For sale by the Superiatendent of DocuraentB, U. S. Government Printing Office, WaihingtoD 25, D. C. 



Price J2.7S. 



