Report on the Crinoids collected by the Barbados-Antigua Expedition from the University of Iowa in 1918 / Austin H. Clark. Report on the Ophiurans collected by the Barbados-Antigua Expedition from the University of Iowa in 1918 / Austin H. Clark. Report on the Brachyura collected by the Barbados-Antigua Expedition from the University of Iowa in 1918 / Mary J. Rathbun. Report on the Tanidacea and Isopoda collected by the Barbados-Antigua Expedition from the University of Iowa in 1918 / Pearl L. Boone. Report on the amphipods collected by the Barbados-Antigua Expedition from the University of Iowa in 1918 / Clarence R. Shoemaker. Report on the Echinoidea collected by the Barbados-Antigua Expedition from the University of Iowa in 1918 / Hubert Lyman Clark.