UNIVERSITY OF IOWA STUDIES 

 IN NATURAL HISTORY 



Professor Charles Cleveland Nutting, M. A., Editor 



CONTINUATION OF BULLETIN FROM THE LABORATORIES OF NATURAL HISTORY 

 OF THE STATE UNIVERSITY OF IOWA 



VOLUME IX NUMBER 5 



REPORTS ON THE CRINOIDS, OPHIU- 

 RANS, BRACHYURA, TANIDACEA AND 

 ISOPODA,AMPHIPODS,(^ECHINOIDEA 



of the Barbados- Antigua Expedition of 1918 



The Crinoids Austin H. Clark 



The Ophiurans Austin H. Clark 



The Brachyura Mary J. Rathbun 



The Tanidacea and Isopoda Pearl L. Boone 



The Amphipods Clarence R, Shoemaker 



The Echinoidea Hubert Lyman Clark 



PUBLISHED BY THE UNIVERSITY, IOWA CITY 



