FIRST SERIES NO. 71 AUGUST 1, 1923 
UNIVERSITY OF IOWA 
a STUDIES 
STUDIES IN NATURAL 
HISTORY 
VOLUME X NUMBER 3 
REPORTS ON CERTAIN ARTHROPODS 
AND POLYCHAETOUS ANNELIDS 
of the Barbados-Antigua Expedition of 1918 
PUBLISHED BY THE UNIVERSITY, IOWA CITY 
Issued semi-monthly throughout the year. Entered at the post office at Iowa City, 
Iowa, as second class matter. Acceptance for mailing rates of postage provided 
for in section 1103,Act of October 3, 1917, authorized on July 3, 1918 
