UNIVERSITY OF IOWA STUDIES 

 IN NATURAL HISTORY 



Professor Charles Cleveland Nutting, M. A., Editor 



CONTINUATION OF BULLETIN FEOM THE LABORATORIES OF NATURAL HISTORY 

 OP THE STATE UNIVERSITY OF IOWA 



VOLUME IX NUMBER 5 



REPORTS ON THE CRINOIDS, OPHIU- 

 RANS, BRACHYURA, TANIDACEA AND 

 ISOPODA,AMPHIPODS,gfECHINOIDEA 



of the Barb ados -Antigua Expedition of 1918 



The Crinoids Austin H. Clark 



The Ophiuratis Austin H. Clark 



The Brachyura Mary J. Rathbun 



The Tanidacea and Isopoda Pearl L. Boone 



The Amphipods Clarence R. Shoemaker 



The Eckinoidea Hubert Lyman Clark 



PUBLISHED BY THE UNIVEESITY, IOWA CITY 



