SMITHSONIAN INSTITUTION 



UiNITED STATES NATIONAL MUSEUM 



Bulletin 82 



A MONOGRAPH OF THE EXISTING CRINOIDS 



AUSTH<J HOBART CLARK 



Curator, Division of Echinoderms, 

 United States National Museum . 



VOLUME 1 



THE COMATULIDS 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1921 



