SMITHSONIAN INSTITUTION 



UNITED STATES NATIONAL MUSEUM 



Bulletin 82 



A MONOGRAPH 

 OF THE EXISTING CRINOIDS 



BY 



AUSTIN HOBART CLARK 



VOLUME 1 



THE COMATULIDS 



Part 4a.— SUPERFAMILY MARIAMETRIDA (except the family 



Colobometridae) 



UNITED STATES 



GOVERNMENT PRINTING OFFICE 



WASHINGTON : 1941 



For sale by the Superintendent of Documen 



ts, Washington, D. C. Price jSl. 50 



