FIBST SERIES No. 15 APRIL, 1918 



UNIVERSITY OF IOWA 

 MONOGRAPHS 



BULLETIN FROM THE LABORATORIES 

 OF NATURAL HISTORY 



VOLUME VII NUMBER 5 



REPORT ON THE CRINOIDEA AND ECHINOIDEA 

 Collected by the Bahama Expedition 

 from the University of Iowa in 1 893 

 by 



Hubert Lyman Clark, Ph. D. 

 Museum of Comparative Zoology, Cambridge 



PUBLISHED BY THE UNIVERSITY, IOWA CITY 



ISSUED MONTHLY THROUGHOUT THE YEAR. ENTERED AT THE POST 

 OFFICE AT IOWA CITY, IOWA, AS SECOND-CLASS MATTER 



