

UNITED STATES NATIONAL MUSEUM 

 BULLETIN 82 



ii 



1! 



; HJ 



i a 

 : _D 



. CD 



Is 



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) 





SMITHSONIAN INSTITUTION 

 WASHINGTON, D. C. 



